Acrobat file

Checklist of the 

Vascular Plants of 

Washington 

(excluding grasses and allies

ACERACEAE 

Acer circinatum Pursh 

vine maple 

Acer glabrum Torr. 

Rocky Mountain maple 

Acer glabrum var. douglasii (Hook.) Dippel 

Douglas maple 

Acer grandidentatum Nutt. 

bigtooth maple 

Acer macrophyllum Pursh 

bigleaf maple 

Acer negundo L. 

boxelder 

Acer negundo var. negundo L. 

boxelder 

Acer negundo var. violaceum (Kirchn.) Jaeger 

boxelder 

ACORACEAE 

Acorus americanus (Raf.) Raf. 

sweetflag 

ALISMATACEAE 

Alisma gramineum Lej. 

narrowleaf water plantain 

Alisma plantago-aquatica L. 

American waterplantain 

Alisma triviale Pursh 

northern water plantain 

Baldellia ranunculoides (L.) Parl. 

lesser waterplantain 

Machaerocarpus californicus (Torr. ex Benth.) Small 

California damsonium 

Sagittaria latifolia Willd. 

broadleaf arrowhead 

Sagittaria latifolia var. latifolia Willd. 

broadleaf arrowhead 

Sagittaria subulata (L.) Buch. 

awlleaf arrowhead 

AMARANTHACEAE 

Amaranthus albus L. 

prostrate pigweed 

Amaranthus blitoides S. Wats. 

mat amaranth 

Amaranthus californicus (Moq.) S. Wats. 

California amaranth 

Amaranthus cruentus L. 

red amaranth 

Amaranthus hybridus L. 

slim amaranth 

Amaranthus powellii S. Wats. 

Powell's amaranth 

Amaranthus retroflexus L. 

redroot amaranth 

Amaranthus rudis Sauer 

tall amaranth 

ANACARDIACEAE 

Rhus diversiloba Torr. & Gray 

= Toxicodendron diversilobum 

Rhus glabra L. 

smooth sumac 

Rhus radicans var. rydbergii (Small ex Rydb.) Rehd. 

= Toxicodendron rydbergii 

Rhus toxicodendron var. vulgaris Michx. 

= Toxicodendron rydbergii 

Toxicodendron diversilobum (Torr. & Gray) Greene 

Pacific poison oak 

Toxicodendron rydbergii (Small ex Rydb.) Greene 

western poison ivy 

APOCYNACEAE 

Apocynum X floribundum Greene (pro sp.) 

intermediate dogbane 

Apocynum androsaemifolium L. 

spreading dogbane 

Apocynum androsaemifolium ssp. androsaemifolium L. 


Apocynum androsaemifolium ssp. androsaemifolium var. 

androsaemifolium L. 


Apocynum androsaemifolium ssp. androsaemifolium var. incanum A. 

DC. 


WASHINGTON FLORA Checklist Page 2

Apocynum androsaemifolium ssp. pumilum (Gray) Boivin 


Apocynum androsaemifolium ssp. pumilum var. pumilum Gray 

low dogbane 

Apocynum cannabinum L. 

Indianhemp 

Apocynum medium Greene 

= Apocynum X floribundum 

Apocynum sibiricum Jacq. 

= Apocynum cannabinum 

Apocynum suksdorfii Greene 

= Apocynum cannabinum 

Vinca major L. 

bigleaf periwinkle 

ARACEAE 

Lysichiton americanus Hulten & St. John 

American skunkcabbage 

ARALIACEAE 

Aralia nudicaulis L. 

wild sarsaparilla 

Echinopanax horridus (Sm.) Dcne. & Planch. ex H.A.T. Harms 

= Oplopanax horridus 

Hedera helix L. 

English ivy 

Oplopanax horridus Miq. 

devilsclub 

ARISTOLOCHIACEAE 

Asarum caudatum Lindl. 

British Columbia wildginger 

Asarum caudatum var. caudatum Lindl. 

British Columbia wildginger 

ASCLEPIADACEAE 

Asclepias cryptoceras S. Wats. 

pallid milkweed 

Asclepias cryptoceras ssp. davisii (Woods.) Woods. 

Davis' milkweed 

Asclepias fascicularis Dcne. 

Mexican whorled milkweed 

Asclepias speciosa Torr. 

showy milkweed 

ASPLENIACEAE 

Asplenium trichomanes L. 

maidenhair spleenwort 

Asplenium trichomanes-ramosum L. 

brightgreen spleenwort 

WASHINGTON FLORA Checklist Page 3 

AZOLLACEAE 

Azolla filiculoides Lam. 

Pacific azolla 

Azolla mexicana Schlecht. & Cham. ex K. Presl 

Mexican azolla 

BALSAMINACEAE 

Impatiens aurella Rydb. 

paleyellow touchmenot 

Impatiens capensis Meerb. 

jewelweed 

Impatiens ecalcarata Blank. 

spurless touchmenot 

Impatiens glandulifera Royle 

ornamental jewelweed 

Impatiens noli-tangere L. 

western touchmenot 

BERBERIDACEAE 

Achlys triphylla (Sm.) DC. 

vanilla leaf 

Berberis aquifolium Pursh 

= Mahonia aquifolium 

Berberis nervosa Pursh 

= Mahonia nervosa var. nervosa 

Berberis repens Lindl. 

= Mahonia repens 

Berberis vulgaris L. 

common barberry 

Mahonia aquifolium (Pursh) Nutt. 

Oregongrape 

Mahonia nervosa (Pursh) Nutt. 

Cascade Oregongrape

Mahonia nervosa var. nervosa (Pursh) Nutt. 

cascade Oregongrape 

Mahonia repens (Lindl.) G. Don 

creeping Oregongrape 

Vancouveria hexandra (Hook.) Morr. & Dcne. 

white insideout flower 

BETULACEAE 

Alnus incana (L.) Moench 

mountain alder 

Alnus incana ssp. tenuifolia (Nutt.) Breitung 

thinleaf alder 

Alnus rhombifolia Nutt. 

white alder 

Alnus rubra Bong. 

red alder 

Alnus viridis (Vill.) Lam. & DC. 

sitka alder 

Alnus viridis ssp. sinuata (Regel) A.& D. Love 

Sitka alder 

Betula X utahensis Britt. (pro sp.) 

northwestern paper birch 

Betula nana L. 

bog birch 

Betula occidentalis Hook. 

water birch 

Betula papyrifera Marsh. 

paper birch 

Betula papyrifera var. commutata (Regel) Fern. 

western paper birch 

Corylus cornuta Marsh. 

beaked hazelnut 

Corylus cornuta var. californica (A. DC.) Sharp 

California hazelnut 

BLECHNACEAE 

Blechnum spicant (L.) Roth 

deer fern 

Woodwardia chamissoi Brack. 

= Woodwardia fimbriata 

Woodwardia fimbriata Sm. 

giant chainfern 


BORAGINACEAE 

Allocarya 

= Plagiobothrys 

Amsinckia lycopsoides Lehm. 

tarweed fiddleneck 

Amsinckia menziesii (Lehm.) A. Nels. & J.F. Macbr. 

Menzies' fiddleneck 

Amsinckia menziesii var. intermedia (Fisch & C.A. Mey.) Ganders 

Amsinckia menziesii var. menziesii (Lehm.) A. Nels. & J.F. Macbr. 

Amsinckia spectabilis Fisch. & C.A. Mey. 

woolly breeches 

Amsinckia tessellata Gray 

bristly fiddleneck 

Anchusa arvensis (L.) Bieb. 

small bugloss 

Anchusa azurea P. Mill. 

Italian bugloss 

Anchusa officinalis L. 

common bugloss 

Asperugo procumbens L. 

madwort 

Buglossoides arvensis (L.) I.M. Johnston 

corn gromwell 

Cryptantha Lehm. ex G. Don 

cryptantha 

Cryptantha affinis (Gray) Greene 

quill catseye 

Cryptantha ambigua (Gray) Greene 

basin catseye 

Cryptantha celosioides (Eastw.) Payson 

buttecandle 

Cryptantha circumscissa (Hook. & Arn.) I.M. Johnston 

cushion catseye 

Cryptantha circumscissa var. circumscissa (Hook. & Arn.) I.M. 

Johnston 

cushion catseye 

Cryptantha fendleri (Gray) Greene 

sanddune catseye 

Cryptantha flaccida (Dougl. ex Lehm.) Greene 

weakstem catseye 

Cryptantha intermedia (Gray) Greene 

Clearwater catseye 

Cryptantha interrupta (Greene) Payson 

Elko catseye

Cryptantha leucophaea (Dougl. ex Lehm.) Payson 

Cotton's stickseed 

gray catseye 

Hackelia diffusa var. diffusa (Lehm.) I.M. Johnston 

Cryptantha pterocarya (Torr.) Greene 

spreading stickseed 

wingnut catseye 

Hackelia floribunda (Lehm.) I.M. Johnston 

Cryptantha pterocarya var. pterocarya (Torr.) Greene 

manyflower stickseed 

wingnut catseye 

Hackelia hispida (Gray) I.M. Johnston 

Cryptantha rostellata var. rostellata (Greene) Greene 

showy stickseed 

beaked catseye 

Hackelia hispida var. disjuncta R.L. Carr 

Cryptantha scoparia A. Nels. 

rough stickseed 

Pinyon Desert catseye 

Hackelia micrantha (Eastw.) J.L. Gentry 

Cryptantha simulans Greene 

Jessica sticktight 

pinewoods catseye 

Hackelia venusta (Piper) St. John 

Cryptantha spiculifera (Piper) Payson 

lesser showy stickseed 

Snake River catseye 

Heliotropium curassavicum L. 

Cryptantha thompsonii I.M. Johnston 

salt heliotrope 

Thompson's catseye 

Heliotropium curassavicum var. obovatum DC. 

Cryptantha torreyana (Gray) Greene 

seaside heliotrope 

Torrey's catseye 

Lappula occidentalis (S. Wats.) Greene 

Cryptantha torreyana var. torreyana (Gray) Greene 

flatspine stickseed 

Torrey's catseye 

Lappula occidentalis var. cupulata (Gray) Higgins 

Cryptantha watsonii (Gray) Greene 

flatspine stickseed 

Watson's catseye 

Lappula occidentalis var. occidentalis (S. Wats.) Greene 

Cynoglossum grande Dougl. ex Lehm. 

desert stickseed 

Pacific hound's tongue 

Lappula squarrosa (Retz.) Dumort. 

Cynoglossum officinale L. 

European stickseed 

gypsyflower 

Lithospermum arvense L. 

Echium vulgare L. 

= Buglossoides arvensis 

common vipersbugloss 

Lithospermum ruderale Dougl. ex Lehm. 

Eritrichium nanum (Vill.) Schrad. ex Gaudin 

western gromwell 

arctic alpine forget me not 

Mertensia longiflora Greene 

Eritrichium nanum var. elongatum (Rydb.) Cronq. 

small bluebells 

arctic alpine forget me not 

Mertensia oblongifolia (Nutt.) G. Don 

Hackelia ciliata (Dougl. ex Lehm.) I.M. Johnston 

oblongleaf bluebells 

Okanogan stickseed 

Mertensia paniculata (Ait.) G. Don 

Hackelia cinerea (Piper) I.M. Johnston 

tall bluebells 

gray stickseed 

Mertensia paniculata var. borealis (J.F. Macbr.) L.O. Williams 

Hackelia deflexa (Wahlenb.) Opiz 

northern bluebells 

nodding stickseed 

Mertensia paniculata var. paniculata (Ait.) G. Don 

Hackelia deflexa var. americana (Gray) Fern. & I.M. Johnston tall bluebells 

American stickseed 

Mertensia platyphylla Heller 

Hackelia diffusa (Lehm.) I.M. Johnston 

broadleaf bluebells 

spreading stickseed 

Mertensia platyphylla var. platyphylla Heller 

Hackelia diffusa var. arida (Piper) R.L. Carr 


sagebrush stickseed 

Mertensia platyphylla var. subcordata (Greene) L.O. Williams 

Hackelia diffusa var. cottonii (Piper) R.L. Carr 



Mertensia umbratilis Greenm. 

shade bluebells 

Myosotis arvensis (L.) Hill 

field forget me not 

Myosotis azorica H.C. Wats. ex Hook. 

Azores forget me not 

Myosotis discolor Pers. 

changing forget me not 

Myosotis laxa Lehm. 

bay forget me not 

Myosotis scorpioides L. 

true forget me not 

Myosotis stricta Link ex Roemer & J.A. Schultes 

strict forget me not 

Myosotis sylvatica Ehrh. ex Hoffmann 

woodland forget me not 

Myosotis verna Nutt. 

spring forget me not 

Pectocarya penicillata (Hook. & Arn.) A. DC. 

sleeping combseed 

Pectocarya pusilla (A. DC.) Gray 

little combseed 

Pectocarya setosa Gray 

moth combseed 

Plagiobothrys figuratus (Piper) I.M. Johnston ex M.E. Peck 

fragrant popcornflower 

Plagiobothrys figuratus ssp. figuratus (Piper) I.M. Johnston ex M.E. 

Peck 

fragrant popcornflower 

Plagiobothrys leptocladus (Greene) I.M. Johnston 

finebranched popcornflower 

Plagiobothrys nothofulvus (Gray) Gray 

rusty popcornflower 

Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnston 

Scouler's popcornflower 

Plagiobothrys scouleri var. cusickii (Greene) Higgins 

Cusick's popcornflower 

Plagiobothrys scouleri var. scouleri (Hook. & Arn.) I.M. Johnston 

Scouler's popcornflower 

Plagiobothrys tenellus (Nutt. ex Hook.) Gray 

Pacific popcornflower 

Symphytum asperum Lepechin 

prickly comfrey 

Symphytum officinale L. 

common comfrey 

Tiquilia nuttallii (Hook.) A. Richards. 

Nuttall's coldenia 

BUDDLEJACEAE 

Buddleja davidii Franch. 

orange eye butterflybush 

CABOMBACEAE 

Brasenia schreberi J.F. Gmel. 

watershield 


CACTACEAE 

Opuntia erinacea Engelm. & Bigelow ex Engelm. 

grizzlybear pricklypear 

Opuntia erinacea var. columbiana (Griffiths) L. Benson 

grizzleybear pricklypear 

Opuntia fragilis (Nutt.) Haw. 

brittle pricklypear 

Opuntia fragilis var. fragilis (Nutt.) Haw. 

pygmy pricklypear 

Opuntia polyacantha Haw. 

plains pricklypear 

Pediocactus simpsonii (Engelm.) Britt. & Rose 

Simpson hedgehog cactus 

Pediocactus simpsonii var. robustior (Coult.) L. Benson 

snowball cactus 

CALLITRICHACEAE 

Callitriche hermaphroditica L. 

northern waterstarwort 

Callitriche heterophylla Pursh 

larger waterstarwort 

Callitriche heterophylla ssp. bolanderi (Hegelm.) Calder & Taylor 

Bolander's waterstarwort 

Callitriche heterophylla ssp. heterophylla Pursh 

twoheaded waterstarwort 

Callitriche palustris L. 

vernal waterstarwort 

Callitriche stagnalis Scop. 

pond waterstarwort

CAMPANULACEAE 

Campanula aparinoides Pursh 

marsh bellflower 

Campanula lasiocarpa Cham. 

mountain harebell 

Campanula parryi Gray 

Parry's bellflower 

Campanula parryi var. idahoensis McVaugh 

Idaho bellflower 

Campanula piperi T.J. Howell 

Olympic bellflower 

Campanula rotundifolia L. 

bluebell bellflower 

Campanula scabrella Engelm. 

rough bellflower 

Campanula scouleri Hook. ex A. DC. 

pale bellflower 

Downingia elegans (Dougl. ex Lindl.) Torr. 

elegant calicoflower 

Downingia elegans var. brachypetala (Gandog.) McVaugh 


Downingia elegans var. elegans (Dougl. ex Lindl.) Torr. 


Downingia yina Applegate 

cascade calicoflower 

Githopsis specularioides Nutt. 

common bluecup 

Heterocodon rariflorum Nutt. 

rareflower heterocodon 

Howellia aquatilis Gray 

water howellia 

Lobelia dortmanna L. 

Dortmann's cardinalflower 

Lobelia kalmii L. 

Ontario lobelia 

Triodanis perfoliata (L.) Nieuwl. 

clasping Venus' lookingglass 

Triodanis perfoliata var. perfoliata (L.) Nieuwl. 

clasping Venus' lookingglass 

CANNABACEAE 

Cannabis sativa L. 

marijuana 

Humulus lupulus L. 

common hop 


CAPPARACEAE 

Cleome lutea Hook. 

yellow spiderflower 

Cleome lutea var. lutea Hook. 

yellow spiderflower 

Cleome serrulata Pursh 

Rocky Mountain beeplant 

Polanisia dodecandra (L.) DC. 

roughseed clammyweed 

Polanisia dodecandra ssp. trachysperma (Torr. & Gray) Iltis 

sandyseed clammyweed 

CAPRIFOLIACEAE 

Linnaea borealis L. 

twinflower 

Linnaea borealis ssp. longiflora (Torr.) Hulten 

longtube twinflower 

Lonicera caerulea L. 

sweetberry honeysuckle 

Lonicera caerulea var. cauriana (Fern.) Boivin 

bluefly honeysuckle 

Lonicera ciliosa (Pursh) Poir. ex DC. 

orange honeysuckle 

Lonicera conjugialis Kellogg 

purpleflower honeysuckle 

Lonicera etrusca Santi 

Etruscan honeysuckle 

Lonicera hispidula (Lindl.) Dougl. ex Torr. & Gray 

California honeysuckle 

Lonicera involucrata Banks ex Spreng. 

twinberry honeysuckle 

Lonicera involucrata var. involucrata Banks ex Spreng. 

twinberry honeysuckle 

Lonicera utahensis S. Wats. 

Utah honeysuckle 

Sambucus cerulea var. cerulea Raf. 

blue elderberry 

Sambucus mexicana ssp. cerulea (Raf.) E. Murr. 

= Sambucus nigra ssp. cerulea 

Sambucus nigra L. 

European black elder

Sambucus nigra ssp. cerulea (Raf.) R. Bolli 

Sambucus racemosa L. 

scarlet elderberry 

Sambucus racemosa ssp. pubens var. arborescens (Torr. & Gray) Gray 

Pacific red elder 

Sambucus racemosa ssp. pubens var. melanocarpa (Gray) McMinn 

black elderberry 

Sambucus racemosa var. racemosa L. 

Symphoricarpos albus (L.) Blake 

common snowberry 

Symphoricarpos albus var. laevigatus (Fern.) Blake 

common snowberry 

Symphoricarpos hesperius G.N. Jones 

trailing snowberry 

Symphoricarpos occidentalis Hook. 

western snowberry 

Symphoricarpos oreophilus Gray 

whortleleaf snowberry 

Symphoricarpos oreophilus var. utahensis (Rydb.) A. Nels. 

Utah snowberry 

Viburnum edule (Michx.) Raf. 

mooseberry viburnum 

Viburnum ellipticum Hook. 

common viburnum 

Viburnum opulus L. 

European cranberrybush viburnum 

Viburnum opulus var. americanum Ait. 

American cranberry viburnum 

CARYOPHYLLACEAE 

Agrostemma githago L. 

common corncockle 

Arenaria aculeata S. Wats. 

prickly sandwort 

Arenaria capillaris Poir. 

mountain sandwort 

Arenaria capillaris ssp. americana Maguire 

fescue sandwort 

Arenaria congesta Nutt. 

ballhead sandwort 

Arenaria congesta var. cephaloidea (Rydb.) Maguire 

sharptip sandwort 

Arenaria congesta var. congesta Nutt. 


Arenaria congesta var. glandulifera Maguire 

gland sandwort 

Arenaria congesta var. prolifera Maguire 


Arenaria franklinii Dougl. ex Hook. 

Franklin's sandwort 

Arenaria franklinii var. franklinii Dougl. ex Hook. 

Franklin's sandwort 

Arenaria franklinii var. thompsonii M.E. Peck 

Thompson's sandwort 

Arenaria serpyllifolia L. 

thymeleaf sandwort 

Cardionema ramosissimum (Weinm.) A. Nels. & J.F. Macbr. 

sandcarpet 

Cerastium arvense L. 

field chickweed 

Cerastium arvense ssp. strictum (L.) Ugborogho 

field chickweed 

Cerastium beeringianum Cham. & Schlecht. 

Bering chickweed 

Cerastium dubium (Bast.) Guepin 

doubtful chickweed 

Cerastium fontanum Baumg. 

common chickweed 

Cerastium fontanum ssp. vulgare (Hartman) Greuter & Burdet 

big chickweed 

Cerastium glomeratum Thuill. 

sticky chickweed 

Cerastium nutans Raf. 

nodding chickweed 

Cerastium siculum Guss. 

dry chickweed 

Dianthus armeria L. 

Deptford pink 

Dianthus barbatus L. 

sweetwilliam 

Dianthus deltoides L. 

maiden pink 

Gypsophila paniculata L. 

babysbreath gypsophila 

Holosteum umbellatum L. 

jagged chickweed 

Honckenya peploides (L.) Ehrh. 

seaside sandplant 

Honckenya peploides ssp. major (Hook.) Hulten 


seaside sandplant 

Sagina saginoides (L.) Karst. 

Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey. arctic pearlwort 

lepyrodiclis 

Saponaria officinalis L. 

Lychnis coronaria (L.) Desr. 

bouncingbet 

rose campion 

Scleranthus annuus L. 

Minuartia michauxii (Fenzl) Farw. 

German knotgrass 

Michaux's stitchwort 

Silene acaulis (L.) Jacq. 

Minuartia michauxii var. michauxii (Fenzl) Farw. 

moss campion 

Michaux's stitchwort 

Silene acaulis var. exscapa (All.) DC. 

Minuartia nuttallii (Pax) Briq. 

moss campion 

Nuttall's sandwort 

Silene antirrhina L. 

Minuartia nuttallii ssp. nuttallii (Pax) Briq. 

sleepy silene 

Nuttall's sandwort 

Silene armeria L. 

Minuartia obtusiloba (Rydb.) House 

sweet William silene 

twinflower sandwort 

Silene conica L. 

Minuartia pusilla (S. Wats.) Mattf. 

striped corn catchfly 

annual sandwort 

Silene conoidea L. 

Minuartia pusilla var. pusilla (S. Wats.) Mattf. 

weed silene 

annual sandwort 

Silene dichotoma Ehrh. 

Minuartia rossii (R. Br. ex Richards.) Graebn. 

dichotoma silene 

Ross' sandwort 

Silene dioica (L.) Clairville 

Minuartia rubella (Wahlenb.) Hiern 

red catchfly 

beautiful sandwort 

Silene douglasii Hook. 

Minuartia tenella (Nutt.) Mattf. 

Douglas's campion 

slender stitchwort 

Silene douglasii var. douglasii Hook. 

Moehringia lateriflora (L.) Fenzl 

Douglas's campion 

bluntleaf sandwort 

Silene gallica L. 

Moehringia macrophylla (Hook.) Fenzl 

common catchfly 

largeleaf sandwort 

Silene latifolia Poir. 

Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartman bladder campion 

tuber starwort 

Silene latifolia ssp. alba (P. Mill.) Greuter & Burdet 

Sagina apetala Ard. 

bladder campion 

annual pearlwort 

Silene menziesii Hook. 

Sagina decumbens (Ell.) Torr. & Gray 

Menzies' campion 

beach pearlwort 

Silene menziesii ssp. menziesii Hook. 

Sagina decumbens ssp. occidentalis (S. Wats.) Crow 


western pearlwort 

Silene menziesii ssp. menziesii var. menziesii Hook. 

Sagina maxima Gray 


stickystem pearlwort 

Silene menziesii ssp. menziesii var. viscosa (Greene) C.L. Hitchc. & 

Sagina maxima ssp. crassicaulis (S. Wats.) Crow 

Maguire 



Sagina maxima ssp. maxima Gray 

Silene multinervia S. Wats. 


manynerve catchfly 

Sagina procumbens L. 

Silene noctiflora L. 

birdeye pearlwort 

nightflowering silene 


Silene oregana S. Wats. 

Oregon silene 

Silene parryi (S. Wats.) C.L. Hitchc. & Maguire 

Parry's silene 

Silene scouleri Hook. 

Scouler's campion 

Silene scouleri ssp. scouleri Hook. 


Silene scouleri ssp. scouleri var. pacifica (Eastw.) C.L. Hitchc. 


Silene scouleri ssp. scouleri var. scouleri Hook. 


Silene seelyi Morton & J.W. Thompson 

Seely's catchfly 

Silene spaldingii S. Wats. 

Spalding's silene 

Silene suksdorfii B.L. Robins. 

Suksdorf's silene 

Silene vulgaris (Moench) Garcke 

maidenstears 

Spergula arvense L. 

corn spurry 

Spergula arvense var. sativum (Boenn.) Mert. & Koch 

corn spurry 

Spergularia canadensis (Pers.) G. Don 

Canadian sandspurry 

Spergularia canadensis var. occidentalis R.P. Rossb. 

western sandspurry 

Spergularia diandra (Guss.) Held. & Sart. 

diandra sandspurry 

Spergularia macrotheca (Hornem.) Heynh. 

sticky sandspurry 

Spergularia rubra (L.) J.& K. Presl 

red sandspurry 

Spergularia salina J.& K. Presl 

salt sandspurry 

Spergularia salina var. salina J.& K. Presl 

salt sandspurry 

Stellaria borealis Bigelow 

boreal starwort 

Stellaria borealis ssp. borealis Bigelow 

boreal starwort 

Stellaria borealis ssp. sitchana (Steud.) Piper 

Sitka starwort 

Stellaria calycantha (Ledeb.) Bong. 


northern starwort 

Stellaria crispa Cham. & Schlecht. 

curled starwort 

Stellaria graminea L. 

grasslike starwort 

Stellaria graminea var. graminea L. 

grasslike starwort 

Stellaria humifusa Rottb. 

saltmarsh starwort 

Stellaria jamesiana Torr. 

= Pseudostellaria jamesiana 

Stellaria longifolia Muhl. ex Willd. 

longleaf starwort 

Stellaria longifolia var. longifolia Muhl. ex Willd. 

longleaf starwort 

Stellaria longipes Goldie 

longstalk starwort 

Stellaria longipes ssp. longipes Goldie 


Stellaria longipes var. longipes Goldie 


Stellaria media (L.) Vill. 

common chickweed 

Stellaria nitens Nutt. 

shiny chickweed 

Stellaria obtusa Engelm. 

Rocky Mountain chickweed 

Vaccaria hispanica (P. Mill.) Rauschert 

cow soapwort 

CELASTRACEAE 

Euonymus occidentalis Nutt. ex Torr. 

western wahoo 

Euonymus occidentalis var. occidentalis Nutt. ex Torr. 

western wahoo 

Paxistima myrsinites (Pursh) Raf. 

boxleaf myrtle 

CERATOPHYLLACEAE 

Ceratophyllum echinatum Gray 

spineless hornwort

CHENOPODIACEAE 

blite goosefoot 

Chenopodium capitatum var. capitatum (L.) Aschers. 

Atriplex canescens (Pursh) Nutt. 

strawberry spinach 

fourwing saltbush 

Chenopodium chenopodioides (L.) Aellen 

Atriplex canescens var. canescens (Pursh) Nutt. 

Chenopodium desiccatum A. Nels. 

fourwing saltbush 

aridland goosefoot 

Atriplex falcata (M.E. Jones) Standl. 

Chenopodium foliosum (Moench) Aschers. 

sickle saltbush 

leafy goosefoot 

Atriplex gmelinii C.A. Mey. ex Bong. 

Chenopodium fremontii S. Wats. 

Gmelin's saltbush 

Fremont's goosefoot 

Atriplex littoralis L. 

Chenopodium fremontii var. fremontii S. Wats. 

grassleaf orache 

Fremont's goosefoot 

Atriplex micrantha Ledeb. 

Chenopodium glaucum L. 

twoscale saltbush 

oakleaf goosefoot 

Atriplex oblongifolia Waldst. & Kit. 

Chenopodium hians Standl. 

oblongleaf orache 

hians goosefoot 

Atriplex patula L. 

Chenopodium humile Hook. 

spear saltbush 

marshland goosefoot 

Atriplex patula ssp. patula L. 

Chenopodium leptophyllum (Moq.) Nutt. ex S. Wats. 

spear saltbush 

narrowleaf goosefoot 

Atriplex prostrata Boucher ex DC. 

Chenopodium murale L. 

triangle orache 

nettleleaf goosefoot 

Atriplex rosea L. 

Chenopodium pratericola Rydb. 

tumbling saltweed 

desert goosefoot 

Atriplex spinosa (Hook.) Collotzi 

Chenopodium pumilio R. Br. 

= Grayia spinosa 

clammy goosefoot 

Atriplex subspicata (Nutt.) Rydb. 

Chenopodium rubrum L. 

saline saltbush 

red goosefoot 

Atriplex truncata (Torr. ex S. Wats.) Gray 

Chenopodium simplex (Torr.) Raf. 

wedgescale saltbush 

mapleleaf goosefoot 

Bassia hyssopifolia (Pallas) Kuntz 

Chenopodium strictum Roth 

fivehorn smotherweed 

lateflowering goosefoot 

Chenopodium album L. 

Chenopodium strictum ssp. glaucophyllum (Aellen) Aellen & Just. 

lambsquarters 

lateflowering goosefoot 

Chenopodium ambrosioides L. 

Chenopodium subglabrum (S. Wats.) A. Nels. 

Mexican tea 

smooth goosefoot 

Chenopodium atrovirens Rydb. 

Chenopodium urbicum L. 

pinyon goosefoot 

city goosefoot 

Chenopodium berlandieri Moq. 

Corispermum hyssopifolium L. 

pitseed goosefoot 

common bugseed 

Chenopodium berlandieri var. zschackii (J. Murr) J. Murr ex Aschers. 

Eurotia lanata (Pursh) Moq. 

Zschack's goosefoot 

= Krascheninnikovia lanata 

Chenopodium botrys L. 

Grayia spinosa (Hook.) Moq. 

Jerusalem oak goosefoot 

spiny hopsage 

Chenopodium capitatum (L.) Ambrosi 

Kochia scoparia (L.) Schrad. 


common kochia 

Krascheninnikovia lanata (Pursh) Guldenstaedt 

winterfat 

Monolepis nuttalliana (J.A. Schultes) Greene 

Nuttall's povertyweed 

Nitrophila occidentalis (Moq.) S. Wats. 

western miterwort 

Salicornia maritima Wolff & Jefferies 

slender grasswort 

Salicornia rubra A. Nels. 

red swampfire 

Salicornia virginica L. 

Virginia glasswort 

Salsola kali L. 

prickly Russian thistle 

Sarcobatus vermiculatus (Hook.) Torr. 

greasewood 

Sarcocornia perennis (P. Mill.) A.J. Scott 

chickenclaws 

Spinacia oleracea L. 

spinach 

Suaeda calceoliformis (Hook.) Moq. 

Pursh seepweed 

Suaeda maritima (L.) Dumort. 

herbaceous seepweed 

Suaeda maritima ssp. maritima (L.) Dumort. 

herbaceous seepweed 

CLUSIACEAE 

Hypericum anagalloides Cham. & Schlecht. 

trailing St. Johnswort 

Hypericum formosum ssp. scouleri (Hook.) C.L. Hitchc. 

= Hypericum scouleri ssp. scouleri 

Hypericum majus (Gray) Britt. 

large St. Johnswort 

Hypericum perforatum L. 

common St. Johnswort 

Hypericum scouleri Hook. 

Scouler's St. Johnswort 

Hypericum scouleri ssp. nortoniae (M.E. Jones) J. Gillett 

Norton's St. Johnswort 

Hypericum scouleri ssp. scouleri Hook. 

Scouler's St. Johnswort 


COMPOSITAE 

Achillea lanulosa Nutt. 

= Achillea millefolium var. occidentalis 

Achillea millefolium L. 

common yarrow 

Achillea millefolium var. alpicola (Rydb.) Garrett 

common yarrow 

Achillea millefolium var. californica (Pollard) Jepson 

California yarrow 

Achillea millefolium var. millefolium L. 

common yarrow 

Achillea millefolium var. occidentalis DC. 

western yarrow 

Achillea millefolium var. pacifica (Rydb.) G.N. Jones 

Pacific yarrow 

Acroptilon repens (L.) DC. 

hardheads 

Adenocaulon bicolor Hook. 

American trailplant 

Ageratina occidentalis (Hook.) King & H.E. Robins. 

western snakeroot 

Agoseris apargioides (Less.) Greene 

woolly goat chicory 

Agoseris apargioides var. maritima (Sheldon) Q. Jones 

Agoseris aurantiaca (Hook.) Greene 

orange agoseris 

Agoseris aurantiaca var. aurantiaca (Hook.) Greene 

orange agoseris 

Agoseris elata (Nutt.) Greene 

tall agoseris 

Agoseris glauca (Pursh) Raf. 

pale agoseris 

Agoseris glauca var. agrestis (Osterhout) Q. Jones ex Cronq. 

pale agoseris 

Agoseris glauca var. dasycephala (Torr. & Gray) Jepson 

pale agoseris 

Agoseris glauca var. glauca (Pursh) Raf. 

pale agoseris 

Agoseris glauca var. monticola (Greene) Q. Jones ex Cronq. 

pale agoseris 

Agoseris grandiflora (Nutt.) Greene 

bigflower agoseris 

Agoseris heterophylla (Nutt.) Greene 

annual agoseris

Agoseris heterophylla var. heterophylla (Nutt.) Greene 

raceme pussytoes 

annual agoseris 

Antennaria rosea Greene 

Agoseris retrorsa (Benth.) Greene 

rosy pussytoes 

spearleaf agoseris 

Antennaria rosea ssp. arida (E. Nels.) Bayer 

Ambrosia acanthicarpa Hook. 


flatspine burr ragweed 

Antennaria rosea ssp. confinis (Greene) Bayer 

Ambrosia artemisiifolia L. 


annual ragweed 

Antennaria rosea ssp. pulvinata (Greene) Bayer 

Ambrosia artemisiifolia var. elatior (L.) Descourtils 

pulvinate pussytoes 

annual ragweed 

Antennaria rosea ssp. rosea Greene 

Ambrosia chamissonis (Less.) Greene 


silver burr ragweed 

Antennaria stenophylla (Gray) Gray 

Ambrosia psilostachya DC. 

narrowleaf pussytoes 

Cuman ragweed 

Antennaria umbrinella Rydb. 

Ambrosia trifida L. 

umber pussytoes 

great ragweed 

Anthemis arvensis L. 

Ambrosia trifida var. trifida L. 

corn chamomile 

great ragweed 

Anthemis cotula L. 

Anaphalis margaritacea (L.) Benth. & Hook. f. 

stinking chamomile 

western pearlyeverlasting 

Anthemis tinctoria L. 

Antennaria anaphaloides Rydb. 

golden chamomile 

pearly pussytoes 

Arctium lappa L. 

Antennaria dimorpha (Nutt.) Torr. & Gray 

greater burrdock 

low pussytoes 

Arctium minus Bernh. 

Antennaria flagellaris (Gray) Gray 

lesser burrdock 

whip pussytoes 

Arnica X diversifolia Greene (pro sp.) 

Antennaria geyeri Gray 

rayless arnica 

pinewoods pussytoes 

Arnica amplexicaulis Nutt. 

Antennaria howellii Greene 

clasping arnica 

Howell's pussytoes 

Arnica chamissonis Less. 

Antennaria howellii ssp. howellii Greene 

chamisso arnica 

Howell's pussytoes 

Arnica chamissonis ssp. chamissonis Less. 

Antennaria lanata (Hook.) Greene 


woolly pussytoes 

Arnica chamissonis ssp. chamissonis var. interior Maguire 

Antennaria luzuloides Torr. & Gray 


rush pussytoes 

Arnica chamissonis ssp. foliosa (Nutt.) Maguire 

Antennaria media Greene 


Rocky Mountain pussytoes 

Arnica chamissonis ssp. foliosa var. andina (Nutt.) Ediger & Barkl. 

Antennaria microphylla Rydb. 


littleleaf pussytoes 

Arnica chamissonis ssp. foliosa var. incana (Gray) Hulten 

Antennaria parvifolia Nutt. 


smallleaf pussytoes 

Arnica cordifolia Hook. 

Antennaria pulcherrima (Hook.) Greene 

heartleaf arnica 

showy pussytoes 

Arnica discoidea Benth. 

Antennaria racemosa Hook. 

rayless arnica 


Arnica fulgens Pursh 

Artemisia campestris ssp. caudata (Michx.) Hall & Clements 

foothill arnica 

field wormwood 

Arnica gracilis Rydb. 

Artemisia campestris ssp. pacifica (Nutt.) Hall & Clements 

smallhead arnica 

Pacific wormwood 

Arnica latifolia Bong. 

Artemisia douglasiana Bess. 

broadleaf arnica 

California mugwort 

Arnica longifolia D.C. Eat. 

Artemisia dracunculus L. 

spearleaf arnica 

Russian or false tarragon 

Arnica mollis Hook. 

Artemisia dracunculus ssp. dracunculus L. 

hairy arnica 

Russian or false tarragon 

Arnica nevadensis Gray 

Artemisia frigida Willd. 

Nevada arnica 

fringed sagewort, silver sage 

Arnica parryi Gray 

Artemisia furcata Bieb. 

Parry's arnica 

forked sagewort 

Arnica parryi ssp. parryi Gray 

Artemisia furcata var. furcata Bieb. 

Parry's arnica 

forked sagewort 

Arnica rydbergii Greene 

Artemisia lindleyana Bess. 

Rydberg's arnica 

northwest sagebrush 

Arnica sororia Greene 

Artemisia ludoviciana Nutt. 

twin arnica 

estafiate 

Artemisia absinthium L. 

Artemisia ludoviciana ssp. candicans (Rydb.) Keck 

European wormwood 

estafiate 

Artemisia arbuscula Nutt. 

Artemisia ludoviciana ssp. ludoviciana Nutt. 

low sagebrush 

estafiate 

Artemisia arbuscula ssp. arbuscula Nutt. 

Artemisia michauxiana Bess. 

gray low sagebrush 

Michaux's sagebrush 

Artemisia arctica Less. 

Artemisia rigida (Nutt.) Gray 

boreal sagebrush 

stiff sagebrush 

Artemisia arctica ssp. arctica Less. 

Artemisia suksdorfii Piper 

boreal sagebrush 

coastal wormwood 

Artemisia biennis Willd. 

Artemisia tilesii Ledeb. 

biennial wormwood 

Tilesius' wormwood 

Artemisia campestris L. 

Artemisia tilesii ssp. elatior (Torr. & Gray) Hulten 

field sagewort 

Tilesius' wormwood 

Artemisia campestris ssp. borealis (Pallas) Hall & Clements 

Artemisia tridentata Nutt. 

northern sagewort 

big sagebrush 

Artemisia campestris ssp. borealis var. borealis (Pallas) M.E. Peck Artemisia tridentata ssp. tridentata Nutt. 

Pacific wormwood 

basin big sagebrush 

Artemisia campestris ssp. borealis var. purshii (Hook.) Cronq. Artemisia tridentata ssp. vaseyana (Rydb.) Beetle 

Pursh's wormwood 

mountain big sagebrush 

Artemisia campestris ssp. borealis var. scouleriana (Hook.) Cronq. Artemisia tripartita Rydb. 

Scouler's wormwood 

threetip sagebrush 

Artemisia campestris ssp. borealis var. wormskioldii (Bess. ex Hook.) Artemisia tripartita ssp. tripartita Rydb. 

Cronq. 

Idaho threetip sagebrush 

Wormskiold's wormwood 

Aster X amethystinus Nutt. (pro sp.) 


amethyst aster 

Aster jessicae Piper 

Aster X columbianus Piper (pro sp.) 

Jessica's aster 

Columbian aster 

Aster laevis L. 

Aster alpigenus ssp. alpigenus (Torr. & Gray) Gray 

smooth aster 

tundra aster 

Aster laevis var. geyeri Gray 

Aster ascendens Lindl. 

Geyer's smooth aster 

Chile aster 

Aster ledophyllus (Gray) Gray 

Aster campestris Nutt. 

Cascade aster 

meadow aster 

Aster ledophyllus var. ledophyllus (Gray) Gray 

Aster campestris var. bloomeri (Gray) Gray 

Cascade aster 

Bloomer's aster 

Aster meritus A. Nels. 

Aster campestris var. campestris Nutt. 

Aster novae-angliae L. 

western meadow aster 

New England aster 

Aster chilensis Nees 

Aster occidentalis (Nutt.) Torr. & Gray 

creeping aster 

western aster 

Aster chilensis var. chilensis Nees 

Aster occidentalis var. intermedius Gray 

creeping aster 

intermediate aster 

Aster conspicuus Lindl. 

Aster occidentalis var. occidentalis (Nutt.) Torr. & Gray 

showy aster 

western aster 

Aster cusickii Gray 

Aster oregonensis ssp. oregonensis (Nutt.) Cronq. 

Cusick's aster 

Oregon aster 

Aster eatonii (Gray) T.J. Howell 

Aster radulinus Gray 

Eaton's aster 

roughleaf aster 

Aster ericoides L. 

Aster sibiricus L. 

heath aster 

Siberian aster 

Aster ericoides var. pansus (Blake) Boivin 

Aster subspicatus Nees 

manyflowered aster 

Douglas aster 

Aster falcatus Lindl. 

Aster subspicatus var. grayi (Suksdorf) Cronq. 

cluster aster 

Gray's aster 

Aster foliaceus Lindl. ex DC. 

Aster subspicatus var. subspicatus Nees 

alpine leafybract aster 

leafybract aster 

Aster foliaceus var. apricus Gray 

Balsamita major Desf. 

leafybract aster 

costmary 

Aster foliaceus var. canbyi Gray 

Balsamorhiza X terebinthacea (Hook.) Nutt. (pro sp.) 

Canby's aster 

balsamroot 

Aster foliaceus var. foliaceus Lindl. ex DC. 

Balsamorhiza X tomentosa Rydb. (pro sp.) 

alpine leafybract aster 

tomentose balsamroot 

Aster foliaceus var. parryi (D.C. Eat.) Gray 

Balsamorhiza careyana Gray 

Parry's aster 

Carey's balsamroot 

Aster hallii Gray 

Balsamorhiza careyana var. careyana Gray 

Hall's aster 

Carey's balsamroot 

Aster hendersonii Fern. 

Balsamorhiza deltoidea Nutt. 

Lyall aster 

deltoid balsamroot 

Aster integrifolius Nutt. 

Balsamorhiza hookeri (Hook.) Nutt. 

thickstem aster 

Hooker's balsamroot 


Balsamorhiza hookeri var. hirsuta (Nutt.) A. Nels. 

silvercrown 

hairy balsamroot 

Canadanthus modestus (Lindl.) Nesom 

Balsamorhiza hookeri var. hookeri (Hook.) Nutt. 

Carduus nutans L. 

Hooker's balsamroot 

nodding plumeless thistle 

Balsamorhiza hookeri var. lagocephala (Sharp) Cronq. 

Centaurea biebersteinii DC. 

rabbithead balsamroot 

spotted knapweed 

Balsamorhiza incana Nutt. 

Centaurea calcitrapa L. 

hoary balsamroot 

red star thistle 

Balsamorhiza rosea A. Nels. & J.F. Macbr. 

Centaurea cyanus L. 

rosy balsamroot 

garden cornflower 

Balsamorhiza sagittata (Pursh) Nutt. 

Centaurea debeauxii Gren. & Godr. 

arrowleaf balsamroot 

meadow knapweed 

Balsamorhiza serrata A. Nels. & J.F. Macbr. 

Centaurea diffusa Lam. 

serrate balsamroot 

white knapweed 

Bellis perennis L. 

Centaurea jacea L. 

lawndaisy 

brownray knapweed 

Bidens cernua L. 

Centaurea melitensis L. 

nodding beggartick 

Maltese star thistle 

Bidens frondosa L. 

Centaurea montana L. 

devil's beggartick 

mountain cornflower 

Bidens tripartita L. 

Centaurea nigra L. 

threelobe beggarticks 

lesser knapweed 

Bidens vulgata Greene 

Centaurea nigrescens Willd. 

big devils beggartick 

Tyrol knapweed 

Blepharipappus scaber Hook. 

Centaurea solstitialis L. 

rough eyelashweed 

yellow star thistle 

Blepharipappus scaber ssp. scaber Hook. 

Chaenactis douglasii (Hook.) Hook. & Arn. 

rough eyelashweed 

Douglas' dustymaiden 

Brachyactis ciliata (Ledeb.) Ledeb. 

Chaenactis douglasii var. douglasii (Hook.) Hook. & Arn. 

alkali rayless aster 

Douglas' dustymaiden 

Brachyactis ciliata ssp. angusta (Lindl.) A.G. Jones 

Chaenactis thompsonii Cronq. 

alkali rayless aster 

Thompson's pincushion 

Brachyactis frondosa (Nutt.) Gray 

Chondrilla juncea L. 

leafy rayless aster 

hogbite 

Brickellia grandiflora (Hook.) Nutt. 

Chrysanthemum balsamita (L.) Baill., non L. 

tasselflower brickellbush 

= Balsamita major 

Brickellia microphylla (Nutt.) Gray 

Chrysanthemum leucanthemum L. 

littleleaf brickellbush 

= Leucanthemum vulgare 

Brickellia microphylla var. microphylla (Nutt.) Gray 

Chrysanthemum parthenium (L.) Bernh. 

littleleaf brickellbush 

= Tanacetum parthenium 

Brickellia oblongifolia Nutt. 

Chrysothamnus nauseosus (Pallas ex Pursh) Britt. 

Mojave brickellbush 

= Ericameria nauseosa ssp. nauseosa var. nauseosa 

Brickellia oblongifolia var. oblongifolia Nutt. 

Chrysothamnus viscidiflorus (Hook.) Nutt. 

narrowleaf brickellbush 

green rabbitbrush 

Cacaliopsis nardosmia (Gray) Gray 

Chrysothamnus viscidiflorus ssp. lanceolatus (Nutt.) Hall & Clements 



Columbiadoria hallii (Gray) Nesom 

Chrysothamnus viscidiflorus ssp. puberulus (D.C. Eat.) Hall & Hall's columbiadoria 

Clements 

Conyza canadensis (L.) Cronq. 


Canadian horseweed 

Chrysothamnus viscidiflorus ssp. viscidiflorus (Hook.) Nutt. 

Conyza canadensis var. canadensis (L.) Cronq. 



Chrysothamnus viscidiflorus ssp. viscidiflorus var. viscidiflorus Conyza canadensis var. glabrata (Gray) Cronq. 

(Hook.) Nutt. 



Coreopsis tinctoria Nutt. 

Cichorium intybus L. 

golden tickseed 

chicory 

Coreopsis tinctoria var. atkinsoniana (Dougl. ex Lindl.) H.M. Parker 

Cirsium arvense (L.) Scop. 

Atkinson's tickseed 

Canadian thistle 

Coreopsis tinctoria var. tinctoria Nutt. 

Cirsium brevifolium Nutt. 

golden tickseed 

Palouse thistle 

Cotula coronopifolia L. 

Cirsium brevistylum Cronq. 

common brassbuttons 

clustered thistle 

Crepis acuminata Nutt. 

Cirsium edule Nutt. 

longleaf hawksbeard 

edible thistle 

Crepis acuminata ssp. acuminata Nutt. 

Cirsium foliosum (Hook.) DC. 

longleaf hawksbeard 

elk thistle 

Crepis atribarba Heller 

Cirsium hookerianum Nutt. 

slender hawksbeard 

white thistle 

Crepis atribarba ssp. atribarba Heller 

Cirsium neomexicanum Gray 


New Mexico thistle 

Crepis atribarba ssp. originalis (Babcock & Stebbins) Babcock & 

Cirsium neomexicanum var. utahense (Petrak) Welsh 

Stebbins 

Utah thistle 


Cirsium remotifolium (Hook.) DC. 

Crepis bakeri Greene 

fewleaf thistle 

Baker's hawksbeard 

Cirsium remotifolium ssp. oregonense Petrak 

Crepis bakeri ssp. bakeri Greene 

Cirsium remotifolium ssp. remotifolium (Hook.) DC. 

Baker's hawksbeard 

Cirsium remotifolium var. remotifolium (Hook.) DC. 

Crepis capillaris Wallr. 

fewleaf thistle 

smooth hawksbeard 

Cirsium scariosum Nutt. 

Crepis intermedia Gray 

meadow thistle 

limestone hawksbeard 

Cirsium scariosum var. scariosum Nutt. 

Crepis modocensis Greene 

meadow thistle 

Siskiyou hawksbeard 

Cirsium undulatum (Nutt.) Spreng. 

Crepis modocensis ssp. glareosa (Piper) Babcock & Stebbins 

wavyleaf thistle 

Modoc hawksbeard 

Cirsium undulatum var. undulatum (Nutt.) Spreng. 

Crepis modocensis ssp. modocensis Greene 

wavyleaf thistle 

Modoc hawksbeard 

Cirsium vulgare (Savi) Ten. 

Crepis modocensis ssp. rostrata (Coville) Babcock & Stebbins 

bull thistle 

Siskiyou hawksbeard 

Cnicus benedictus L. 

Crepis nana Richards. 

blessed thistle 

dwarf alpine hawksbeard 


Crepis nana ssp. nana Richards. 

Ericameria greenei (Gray) Nesom 


Greene's heathgoldenrod 

Crepis nana ssp. ramosa Babcock 

Ericameria nauseosa (Pallas ex Pursh) Nesom & Baird 


Ericameria nauseosa ssp. nauseosa (Pallas ex Pursh) Nesom & Baird 

Crepis nicaeensis Balbis ex Pers. 

Ericameria nauseosa ssp. nauseosa var. nana 

Turkish hawksbeard 

Ericameria nauseosa ssp. nauseosa var. nauseosa 

Crepis occidentalis Nutt. 

Ericameria nauseosa ssp. nauseosa var. speciosa 

largeflower hawksbeard 

Ericameria resinosa Nutt. 

Crepis occidentalis ssp. conjuncta (Jepson) Babcock & Stebbins Columbian heathgoldenrod 


Ericameria viscidiflora (Hook.) L.C. Anders. 

Crepis occidentalis ssp. costata (Gray) Babcock & Stebbins 

= Chrysothamnus viscidiflorus ssp. viscidiflorus var. viscidiflorus 


Erigeron acris L. 

Crepis occidentalis ssp. occidentalis Nutt. 

Erigeron acris ssp. acris L. 


Erigeron acris ssp. acris var. debilis 

Crepis occidentalis ssp. pumila (Rydb.) Babcock & Stebbins 

Erigeron acris ssp. politus (Fries) Schinz & R. Keller 


Erigeron aliceae T.J. Howell 

Crepis pleurocarpa Gray 

Alice Eastwood's fleabane 

nakedstem hawksbeard 

Erigeron annuus (L.) Pers. 

Crepis runcinata (James) Torr. & Gray 

eastern daisy fleabane 

fiddleleaf hawksbeard 

Erigeron aureus Greene 

Crepis runcinata ssp. hispidulosa (T.J. Howell ex Rydb.) Babcock & alpine yellow fleabane 

Stebbins 

Erigeron aureus var. aureus Greene 


alpine yellow fleabane 

Crepis runcinata ssp. runcinata (James) Torr. & Gray 

Erigeron basalticus Hoover 


basalt fleabane 

Crepis tectorum L. 

Erigeron bloomeri Gray 

narrowleaf hawksbeard 

scabland fleabane 

Crocidium multicaule Hook. 

Erigeron bloomeri var. bloomeri Gray 

common springgold 

scabland fleabane 

Eatonella nivea (D.C. Eat.) Gray 

Erigeron caespitosus Nutt. 

white false tickhead 

tufted fleabane 

Echinops exaltatus Schrad. 

Erigeron canadensis L. 

tall globethistle 

= Conyza canadensis var. canadensis 

Echinops rito L. 

Erigeron chrysopsidis Gray 

southern globethistle 

dwarf yellow fleabane 

Echinops rito ssp. ruthenicus (Bieb.) Nyman 

Erigeron chrysopsidis ssp. chrysopsidis Gray 

southern globethistle 

dwarf yellow fleabane 

Echinops sphaerocephalus L. 

Erigeron compositus Pursh 

great globethistle 

cutleaf daisy 

Erechtites hieraciifolia (L.) Raf. ex DC. 

Erigeron compositus var. compositus Pursh 

American burnweed 

dwarf mountain fleabane 

Erechtites hieraciifolia var. hieraciifolia (L.) Raf. ex DC. 

Erigeron corymbosus Nutt. 

American burnweed 

longleaf fleabane 

Ericameria bloomeri (Gray) J.F. Macbr. 

Erigeron disparipilus Cronq. 

rabbitbush heathgoldenrod 

white cushion fleabane 


Erigeron divergens Torr. & Gray 

Erigeron peregrinus ssp. peregrinus var. dawsonii Greene 

spreading fleabane 

Dawson's fleabane 

Erigeron eatonii Gray 

Erigeron peregrinus ssp. peregrinus var. thompsonii (Blake ex J.W. 

Eaton's fleabane 

Thompson) Cronq. 

Erigeron eatonii var. villosus (Cronq.) Cronq. 

Thompson's erigeron 

Eaton's fleabane 

Erigeron philadelphicus L. 

Erigeron elatus (Hook.) Greene 

Philadelphia fleabane 

Erigeron filifolius (Hook.) Nutt. 

Erigeron piperianus Cronq. 

threadleaf fleabane 

Piper's fleabane 

Erigeron filifolius var. filifolius (Hook.) Nutt. 

Erigeron poliospermus Gray 


purple cushion fleabane 

Erigeron filifolius var. robustior M.E. Peck 

Erigeron poliospermus var. cereus Cronq. 



Erigeron flettii G.N. Jones 

Erigeron poliospermus var. poliospermus Gray 

Flett's fleabane 


Erigeron howellii Gray 

Erigeron pumilus Nutt. 

Howell's fleabane 

shaggy fleabane 

Erigeron humilis Graham 

Erigeron pumilus ssp. intermedius Cronq. 

arctic alpine fleabane 


Erigeron inornatus (Gray) Gray 

Erigeron pumilus ssp. intermedius var. intermedius (Cronq.) Cronq. 

California rayless fleabane 


Erigeron inornatus var. inornatus (Gray) Gray 

Erigeron speciosus (Lindl.) DC. 

California rayless fleabane 

aspen fleabane 

Erigeron leibergii Piper 

Erigeron speciosus var. macranthus (Nutt.) Cronq. 

Leiberg's fleabane 


Erigeron linearis (Hook.) Piper 

Erigeron speciosus var. speciosus (Lindl.) DC. 

desert yellow fleabane 


Erigeron lonchophyllus Hook. 

Erigeron strigosus Muhl. ex Willd. 

Erigeron oreganus Gray 

prairie fleabane 

gorge fleabane 

Erigeron strigosus var. septentrionalis (Fern. & Wieg.) Fern. 

Erigeron peregrinus (Banks ex Pursh) Greene 


subalpine fleabane 

Erigeron strigosus var. strigosus Muhl. ex Willd. 

Erigeron peregrinus ssp. callianthemus (Greene) Cronq. 



Erigeron subtrinervis Rydb. ex Porter & Britt. 

Erigeron peregrinus ssp. callianthemus var. angustifolius (Gray) threenerve fleabane 

Cronq. 

Erigeron subtrinervis var. conspicuus (Rydb.) Cronq. 


threenerve fleabane 

Erigeron peregrinus ssp. callianthemus var. callianthemus (Greene) Eriophyllum Lag. 

Cronq. 

woollysunflower 


Eriophyllum lanatum (Pursh) Forbes 

Erigeron peregrinus ssp. callianthemus var. scaposus (Torr. & Gray) woolly eriophyllum 

Cronq. 

Eriophyllum lanatum var. achillaeoides (DC.) Jepson 


common woollysunflower 

Erigeron peregrinus ssp. peregrinus (Banks ex Pursh) Greene Eriophyllum lanatum var. integrifolium (Hook.) Smiley 




Eriophyllum lanatum var. lanatum (Pursh) Forbes 

Grindelia nana Nutt. 


Idaho gumweed 

Eriophyllum lanatum var. leucophyllum (DC.) W.R. Carter 

Grindelia nana var. integerrima (Rydb.) Steyermark 


Idaho gumweed 

Eucephalus engelmannii (D.C. Eat.) Greene 

Grindelia nana var. nana Nutt. 

Eucephalus glaucescens (Gray) Greene 

Idaho gumweed 

Eucephalus paucicapitatus (B.L. Robins.) Greene 

Grindelia squarrosa (Pursh) Dunal 

Eupatorium maculatum L. 

curlycup gumweed 

spotted joepyeweed 

Grindelia squarrosa var. serrulata (Rydb.) Steyermark 

Eupatorium maculatum var. bruneri (Gray) Breitung 


spotted joepyeweed 

Grindelia squarrosa var. squarrosa (Pursh) Dunal 

Eupatorium occidentale Hook. 


= Ageratina occidentalis 

Grindelia stricta DC. 

Euthamia graminifolia (L.) Nutt. 

Grindelia stricta var. stricta DC. 

flattop goldentop 

Gutierrezia sarothrae (Pursh) Britt. & Rusby 

Euthamia occidentalis Nutt. 

broom snakeweed 

western goldentop 

Gutierrezia tenuis Greene 

Filago arvensis L. 

= Gutierrezia sarothrae 

field cottonrose 

Haplopappus alpigenus Torr. & Gray 

Franseria 

= Oreostemma alpigenum var. alpigenum 

= Ambrosia 

Haplopappus bloomeri Gray 

Gaillardia aristata Pursh 

= Ericameria bloomeri 

common gaillardia 

Haplopappus brandegei Gray 

Galinsoga Ruiz & Pavon 

= Erigeron aureus var. aureus 

galinsoga 

Haplopappus carthamoides (Hook.) Gray 

Galinsoga quadriradiata Ruiz & Pavon 

= Pyrrocoma carthamoides var. carthamoides 

shaggysoldier 

Haplopappus greenei Gray 

Gamochaeta purpurea (L.) Cabrera 

= Ericameria greenei 

spoonleaf purple everlasting 

Haplopappus hallii Gray 

Gnaphalium arvense L. 

= Columbiadoria hallii 

= Filago arvensis 

Haplopappus lanuginosus Gray 

Gnaphalium californicum DC. 

= Stenotus lanuginosus var. lanuginosus 

= Pseudognaphalium californicum 

Haplopappus liatriformis (Greene) St. John 

Gnaphalium margaritaceum L. 

= Pyrrocoma liatriformis 

= Anaphalis margaritacea 

Haplopappus lyallii Gray 

Gnaphalium palustre Nutt. 

= Tonestus lyallii 

western marsh cudweed 

Haplopappus resinosus (Nutt.) Gray 

Gnaphalium uliginosum L. 

= Ericameria resinosa 

marsh cudweed 

Haplopappus stenophyllus Gray 

Grindelia columbiana (Piper) Rydb. 

= Stenotus stenophyllus 

Columbia River gumweed 

Helenium autumnale L. 

Grindelia integrifolia DC. 

common sneezeweed 

Puget Sound gumweed 

Helenium autumnale var. grandiflorum (Nutt.) Torr. & Gray 

Grindelia integrifolia var. integrifolia DC. 

fall sneezeweed 

Puget Sound gumweed 

Helenium autumnale var. montanum (Nutt.) Fern. 


mountain sneezeweed 

Hieracium aurantiacum L. 

Helianthella uniflora (Nutt.) Torr. & Gray 

orange hawkweed 

oneflower helianthella 

Hieracium canadense Michx. 

Helianthella uniflora var. douglasii (Torr. & Gray) W.A. Weber Canadian hawkweed 

Douglas' helianthella 

Hieracium canadense var. canadense Michx. 

Helianthus annuus L. 

Canadian hawkweed 

common sunflower 

Hieracium gracile Hook. 

Helianthus cusickii Gray 

slender hawkweed 

Cusick's sunflower 

Hieracium gracile var. detonsum (Gray) Gray 

Helianthus grosseserratus Martens 

low alpine hawkweed 

sawtooth sunflower 

Hieracium gracile var. gracile Hook. 

Helianthus maximiliani Schrad. 

slender hawkweed 

Maximilian sunflower 

Hieracium longiberbe T.J. Howell 

Helianthus nuttallii Torr. & Gray 

longbeard hawkweed 

Nuttall's sunflower 

Hieracium scouleri Hook. 

Helianthus nuttallii ssp. nuttallii Torr. & Gray 

woollyweed 

Nuttall's sunflower 

Hieracium scouleri var. scouleri Hook. 

Helianthus petiolaris Nutt. 

Scouler's woollyweed 

prairie sunflower 

Hieracium umbellatum L. 

Helianthus petiolaris ssp. petiolaris Nutt. 

narrowleaf hawkweed 

prairie sunflower 

Hulsea nana Gray 

Helianthus tuberosus L. 

dwarf alpinegold 

Jerusalem artichoke 

Hymenopappus filifolius Hook. 

Heliopsis helianthoides (L.) Sweet 

fineleaf hymenopappus 

sunflower heliopsis 

Hymenopappus filifolius var. filifolius Hook. 

Heliopsis helianthoides var. scabra (Dunal) Fern. 

fineleaf hymenopappus 

smooth oxeye 

Hypochaeris glabra L. 

Hemizonia pungens (Hook. & Arn.) Torr. & Gray 

smooth catsear 

common spikeweed 

Hypochaeris radicata L. 

Hemizonia pungens ssp. septentrionalis Keck 

hairy catsear 

common tarweed 

Ionactis stenomeres (Gray) Greene 

Heterotheca barbata (Rydb.) Semple 

ionactis 

Spokane falsegoldenaster 

Iva axillaris Pursh 

Heterotheca oregona (Nutt.) Shinners 

povertyweed 

Oregon goldenaster 

Iva xanthifolia Nutt. 

Heterotheca oregona var. oregona (Nutt.) Shinners 

giant sumpweed 

Oregon goldenaster 

Jaumea carnosa (Less.) Gray 

Heterotheca villosa (Pursh) Shinners 

marsh jaumea 

hairy goldenaster 

Lactuca biennis (Moench) Fern. 

Heterotheca villosa var. hispida (Hook.) Harms 

tall blue lettuce 

bristly hairy goldaster 

Lactuca canadensis L. 

Heterotheca villosa var. villosa (Pursh) Shinners 

Canada lettuce 

hairy goldenaster 

Lactuca ludoviciana (Nutt.) Riddell 

Hieracium albiflorum Hook. 

biannual lettuce 

white hawkweed 

Lactuca sativa L. 


garden lettuce 

Madia elegans D. Don ex Lindl. 

Lactuca scariola L. 

common madia 

= Lactuca serriola 

Madia elegans ssp. elegans D. Don ex Lindl. 

Lactuca serriola L. 

common madia 

prickly lettuce 

Madia exigua (Sm.) Gray 

Lactuca tatarica (L.) C.A. Mey. 

small tarweed 

blue lettuce 

Madia glomerata Hook. 

Lactuca tatarica var. pulchella (Pursh) Breitung 

mountain tarweed 

blue lettuce 

Madia gracilis (Sm.) Keck & J. Clausen ex Applegate 

Lagophylla ramosissima Nutt. 

grassy tarweed 

branched lagophylla 

Madia gracilis ssp. gracilis (Sm.) Keck & J. Clausen ex Applegate 

Lapsana communis L. 

grassy tarweed 

common nipplewort 

Madia madioides (Nutt.) Greene 

Lasthenia glaberrima DC. 

woodland madia 

smooth goldfields 

Madia minima (Gray) Keck 

Lasthenia maritima (Gray) Ornduff 

oppositeleaved tarweed 

seaside goldfields 

Madia sativa Molina 

Layia glandulosa (Hook.) Hook. & Arn. 

coast tarweed 

whitedaisy tidytips 

Matricaria chamomilla L. 1755 & 1763, non 1753 

Layia glandulosa ssp. glandulosa (Hook.) Hook. & Arn. 

= Matricaria recutita 

whitedaisy tidytips 

Matricaria discoidea DC. 

Leontodon autumnalis L. 

disc mayweed 

fall dandelion 

Matricaria matricarioides (Less.) Porter 

Leontodon taraxacoides (Vill.) Merat 

= Matricaria discoidea 

lesser hawkbit 

Matricaria recutita L. 

Leucanthemum leucanthemum (L.) Rydb. 

mayweed 

= Leucanthemum vulgare 

Matricaria suaveolens (Pursh) Buch., non L. 

Leucanthemum maximum (Ramond) DC. 

= Matricaria discoidea 

Shasta daisy 

Matricaria suaveolens L. 

Leucanthemum vulgare Lam. 

= Matricaria recutita 

oxeyedaisy 

Megalodonta beckii (Torr. ex Spreng.) Greene 

Luina hypoleuca Benth. 

aquatic beggartick 

littleleaf silverback 

Megalodonta beckii var. beckii (Torr. ex Spreng.) Greene 

Lygodesmia juncea (Pursh) D. Don ex Hook. 

Beck's watermarigold 

rush skeletonplant 

Microseris bigelovii (Gray) Schultz-Bip. 

Machaeranthera canescens (Pursh) Gray 

coastal silverpuffs 

hoary aster 

Microseris borealis (Bong.) Schultz-Bip. 

Machaeranthera canescens ssp. canescens (Pursh) Gray 

apargidium 

hoary aster 

Microseris laciniata (Hook.) Schultz-Bip. 

Machaeranthera canescens ssp. canescens var. canescens (Pursh) Gray cutleaf silverpuffs 

cutleaf goldenweed 

Microseris laciniata ssp. laciniata (Hook.) Schultz-Bip. 

Machaeranthera canescens ssp. canescens var. incana (Lindl.) Gray cutleaf silverpuffs 

cutleaf goldenweed 

Microseris nutans (Hook.) Schultz-Bip. 

Madia citriodora Greene 

nodding microceris 

lemonscented madia 

Microseris nutans ssp. nutans (Hook.) Schultz-Bip. 


nodding silverpuffs 

largeflower goldenweed 

Mycelis muralis (L.) Dumort. 

Pyrrocoma carthamoides var. carthamoides Hook. 

walllettuce 

loved goldenweed 

Nothocalais alpestris (Gray) Chambers 

Pyrrocoma carthamoides var. cusickii (Gray) Kartesz & Gandhi 

alpine lake prairiedandelion 

narrowhead goldenweed 

Nothocalais troximoides (Gray) Greene 

Pyrrocoma hirta (Gray) Greene 

weevil microseris 

tacky goldenweed 

Onopordum acanthium L. 

Pyrrocoma hirta var. sonchifolia (Greene) Kartesz & Gandhi 

Scotch cottonthistle 

tacky goldenweed 

Oreostemma alpigenum (Torr. & Gray) Nesom 

Pyrrocoma liatriformis Greene 

Oreostemma alpigenum var. alpigenum (Torr. & Gray) Nesom smallhead goldenweed 

Petasites frigidus (L.) Fries 

Rainiera stricta (Greene) Greene 

Arctic sweet coltsfoot 

false silverback 

Petasites frigidus var. frigidus (L.) Fries 

Rigiopappus leptocladus Gray 


wireweed 

Petasites frigidus var. nivalis (Greene) Cronq. 

Rudbeckia alpicola Piper 


Rudbeckia hirta L. 

Petasites frigidus var. palmatus (Ait.) Cronq. 

blackeyed Susan 


Rudbeckia hirta var. pulcherrima Farw. 

Petasites palmatus (Ait.) Gray 

blackeyed Susan 

= Petasites frigidus var. palmatus 

Rudbeckia occidentalis Nutt. 

Petasites sagittatus (Banks ex Pursh) Gray 

western coneflower 

arrowleaf sweet coltsfoot 

Rudbeckia occidentalis var. occidentalis Nutt. 

Prenanthes alata (Hook.) D. Dietr. 

western coneflower 

western rattlesnakeroot 

Saussurea americana D.C. Eat. 

Pseudognaphalium californicum (DC.) A. Anderb. 

American saussurea 

Pseudognaphalium canescens (DC.) W.A. Weber 

Senecio bolanderi Gray 

Pseudognaphalium canescens ssp. microcephalum (Nutt.) Kartesz, Bolander's ragwort 

comb. nov. ined. 

Senecio bolanderi var. bolanderi Gray 

Pseudognaphalium luteoalbum (L.) Hilliard & Burtt 

Bolander's ragwort 

Pseudognaphalium stramineum (Kunth) W.A. Weber 

Senecio bolanderi var. harfordii (Greenm.) T.M. Barkl. 

Pseudognaphalium viscosum (Kunth) W.A. Weber 

Harford's ragwort 

Psilocarphus brevissimus Nutt. 

Senecio canus Hook. 

short woollyheads 

woolly groundsel 

Psilocarphus brevissimus var. brevissimus Nutt. 

Senecio cymbalaria Pursh 

short woollyheads 

dwarf arctic ragwort 

Psilocarphus elatior (Gray) Gray 

Senecio cymbalarioides Buek 

meadow woollyheads 

cleftleaf groundsel 

Psilocarphus oregonus Nutt. 

Senecio elmeri Piper 

Oregon woollyheads 

Elmer's ragwort 

Psilocarphus tenellus Nutt. 

Senecio flettii Wieg. 

slender woollyheads 

Flett's ragwort 

Psilocarphus tenellus var. tenellus Nutt. 

Senecio fremontii Torr. & Gray 

slender woollyheads 

Fremont's groundsel 

Pyrrocoma carthamoides Hook. 

Senecio fremontii var. fremontii Torr. & Gray 


Fremont's groundsel 

Sericocarpus rigidus Lindl. 

Senecio hydrophiloides Rydb. 

Silybum marianum (L.) Gaertn. 

tall groundwel 

blessed milkthistle 

Senecio hydrophilus Nutt. 

Solidago canadensis L. 

water groundsel 

Canada goldenrod 

Senecio indecorus Greene 

Solidago canadensis var. gilvocanescens Rydb. 

elegant groundsel 

shorthair goldenrod 

Senecio integerrimus Nutt. 

Solidago canadensis var. salebrosa (Piper) M.E. Jones 

lambstongue groundsel 

salebrosa goldenrod 

Senecio integerrimus var. exaltatus (Nutt.) Cronq. 

Solidago gigantea Ait. 

Columbia groundsel 

giant goldenrod 

Senecio integerrimus var. ochroleucus (Gray) Cronq. 

Solidago missouriensis Nutt. 

paleyellow groundsel 

Missouri goldenrod 

Senecio jacobaea L. 

Solidago missouriensis var. fasciculata Holz. 

stinking willie 


Senecio lugens Richards. 

Solidago missouriensis var. missouriensis Nutt. 

small blacktip groundsel 


Senecio macounii Greene 

Solidago missouriensis var. tolmieana (Gray) Cronq. 

Siskiyou Mountain ragwort 

Tolmies' goldenrod 

Senecio neowebsteri Blake 

Solidago multiradiata Ait. 

Olympic Mountain ragwort 

mountain goldenrod 

Senecio pauciflorus Pursh 

Solidago multiradiata var. scopulorum Gray 

alpine groundsel 

manyray goldenrod 

Senecio pauperculus Michx. 

Solidago simplex Kunth 

balsam groundsel 

Mt. Albert goldenrod 

Senecio pseudaureus Rydb. 

Solidago simplex ssp. simplex Kunth 

falsegold groundsel 


Senecio pseudaureus var. pseudaureus Rydb. 

Solidago simplex ssp. simplex var. nana (Gray) Ringius 

falsegold groundsel 

dwarf goldenrod 

Senecio serra Hook. 

Solidago simplex ssp. simplex var. simplex Kunth 

butterweed groundsel 


Senecio serra var. serra Hook. 

Solidago simplex ssp. simplex var. spathulata 

tall ragwort 

Solidago spathulata var. spathulata DC. 

Senecio streptanthifolius Greene 

coastaldune goldenrod 


Solidago uliginosa Nutt. 

Senecio streptanthifolius var. streptanthifolius Greene 

bog goldenrod 


Sonchus arvensis L. 

Senecio sylvaticus L. 

field sowthistle 

woodland ragwort 

Sonchus arvensis ssp. arvensis L. 

Senecio triangularis Hook. 

field sowthistle 

arrowleaf groundsel 

Sonchus arvensis ssp. uliginosus (Bieb.) Nyman 

Senecio vulgaris L. 

moist sowthistle 

common groundsel 

Sonchus asper (L.) Hill 

Sericocarpus oregonensis Nutt. 

spiny sowthistle 

Sericocarpus oregonensis var. oregonensis Nutt. 

Sonchus oleraceus L. 


common sowthistle 

Stenotus lanuginosus (Gray) Greene 

woolly mock goldenweed 

Stenotus lanuginosus var. lanuginosus (Gray) Greene 

cespitose goldenweed 

Stenotus stenophyllus (Gray) Greene 

narrowleaf goldenweed 

Stephanomeria paniculata Nutt. 

tufted wirelettuce 

Stephanomeria tenuifolia (Raf.) Hall 

narrowleaf wirelettuce 

Stephanomeria tenuifolia var. tenuifolia (Raf.) Hall 

narrowleaf wirelettuce 

Tanacetum balsamita L. 

= Balsamita major 

Tanacetum camphoratum Less. 

camphor tansy 

Tanacetum parthenium (L.) Schultz-Bip. 

feverfew 

Tanacetum vulgare L. 

common tansy 

Taraxacum eriophorum Rydb. 

woolbearing dandelion 

Taraxacum laevigatum (Willd.) DC. 

rock dandelion 

Taraxacum lyratum (Ledeb.) DC. 

harp dandelion 

Taraxacum officinale G.H. Weber ex Wiggers 

common dandelion 

Taraxacum officinale ssp. ceratophorum (Ledeb.) Schinz ex Thellung 

fleshy dandelion 

Taraxacum officinale ssp. officinale G.H. Weber ex Wiggers 

wandering dandelion 

Tetradymia canescens DC. 

spineless horsebrush 

Tonestus lyallii (Gray) A. Nels. 

Lyall's goldenweed 

Townsendia florifer (Hook.) Gray 

showy townsendia 

Tragopogon dubius Scop. 

yellow salsify 

Tragopogon mirus Ownbey 

remarkable goatsbeard 

Tragopogon miscellus Ownbey 

Moscow salsify 


Tragopogon porrifolius L. 

salsify 

Tragopogon pratensis L. 

meadow salsify 

Trimorpha acris (L.) Nesom 

bitter boreal daisy 

Trimorpha lonchophylla var. lonchophylla (Hook.) Nesom 

spearleaf fleabane 

Tripleurospermum maritima (L.) W.D.J. Koch 

Tripleurospermum maritima ssp. maritima (L.) W.D.J. Koch 

Uropappus linearifolius Nutt. 

Wyethia amplexicaulis (Nutt.) Nutt. 

mulesears wyethia 

Wyethia angustifolia (DC.) Nutt. 

California compassplant 

Xanthium spinosum L. 

spiny cockleburr 

Xanthium strumarium L. 

rough cockleburr 

Xanthium strumarium var. canadense (P. Mill.) Torr. & Gray 

Canada cockleburr 

Xanthium strumarium var. glabratum (DC.) Cronq. 

rough cockleburr 

CONVOLVULACEAE 

Calystegia atriplicifolia Hallier f. 

nightblooming false bindweed 

Calystegia atriplicifolia ssp. atriplicifolia Hallier f. 

nightblooming false bindweed 

Calystegia sepium (L.) R. Br. 

hedge false bindweed 

Calystegia sepium ssp. sepium (L.) R. Br. 

hedge false bindweed 

Calystegia soldanella (L.) R. Br. ex Roemer & J.A. Schultes 

seashore false bindweed 

Convolvulus arvensis L. 

field bindweed 

Convolvulus sepium L. 

= Calystegia sepium ssp. sepium 

Cuscuta approximata Bab. 

alfalfa dodder 

Cuscuta approximata var. urceolata (Kunze) Yuncker 

alfalfa dodder

Cuscuta californica Hook. & Arn. 

chaparral dodder 

Cuscuta californica var. breviflora Engelm. 

California dodder 

Cuscuta californica var. californica Hook. & Arn. 

California dodder 

Cuscuta cephalanthi Engelm. 

buttonbush dodder 

Cuscuta denticulata Engelm. 

desert dodder 

Cuscuta epilinum Weihe 

flax dodder 

Cuscuta epithymum L. 

clover dodder 

Cuscuta pentagona Engelm. 

fiveangled dodder 

Cuscuta pentagona var. pentagona Engelm. 

fiveangled dodder 

Cuscuta planiflora Ten. 

smallseed dodder 

Cuscuta salina Engelm. 

saltmarsh dodder 

Cuscuta salina var. major Yuncker 

goldenthread 

Cuscuta salina var. salina Engelm. 

saltmarsh dodder 

Cuscuta suksdorfii Yuncker 

mountain dodder 

Cuscuta suksdorfii var. suksdorfii Yuncker 

Suksdorf's dodder 

CORNACEAE 

Cornus alba L. p.p. 

= Cornus sericea ssp. sericea 

Cornus canadensis L. 

bunchberry dogwood 

Cornus nuttallii Audubon ex Torr. & Gray 

Pacific dogwood 

Cornus sericea L. 

redosier dogwood 

Cornus sericea ssp. occidentalis (Torr. & Gray) Fosberg 

western dogwood 

Cornus sericea ssp. sericea L. 

redosier dogwood 

Cornus stolonifera Michx. 

= Cornus sericea ssp. sericea 

Cornus unalaschkensis Ledeb. 

western cordilleran bunchberry 


CRASSULACEAE 

Crassula aquatica (L.) Schoenl. 

water pygmyweed 

Crassula saginoides (Maxim.) Bywater & Wickens 

wrinkleseed pygmyweed 

Rhodiola 

= Sedum 

Sedum acre L. 

goldmoss stonecrop 

Sedum borschii (Clausen) Clausen 

Leiberg stonecrop 

Sedum divergens S. Wats. 

Pacific stonecrop 

Sedum integrifolium (Raf.) A. Nels. 

ledge stonecrop 

Sedum integrifolium ssp. integrifolium (Raf.) A. Nels. 

entireleaf stonecrop 

Sedum lanceolatum Torr. 

spearleaf stonecrop 

Sedum lanceolatum ssp. lanceolatum Torr. 


Sedum lanceolatum ssp. nesioticum (G.N. Jones) Clausen 


Sedum oreganum Nutt. 

kings crown 

Sedum oreganum ssp. oreganum Nutt. 

Oregon stonecrop 

Sedum oreganum ssp. tenue Clausen 

Oregon stonecrop 

Sedum rosea (L.) Scop. 

roseroot stonecrop 

Sedum rupicola G.N. Jones 

curvedleaf stonecrop 

Sedum spathulifolium Hook. 

broadleaf stonecrop 

Sedum spathulifolium ssp. pruinosum (Britt.) Clausen & Uhl 

broadleaf stonecrop 

Sedum spathulifolium ssp. spathulifolium Hook. 

broadleaf stonecrop

Sedum stenopetalum Pursh 

wormleaf stonecrop 

Sedum stenopetalum ssp. monanthum (Suksdorf) Clausen 


Sedum stenopetalum ssp. stenopetalum Pursh 


Tillaea 

= Crassula 

CROSSOSOMATACEAE 

Forsellesia arida (M.E. Jones) Heller 

= Glossopetalon spinescens var. aridum 

Forsellesia nevadensis (Gray) Greene 


Forsellesia stipulifera (St. John) Ensign 


Glossopetalon Gray 

greasebush 

Glossopetalon nevadense Gray 


Glossopetalon nevadense var. stipuliferum (St. John) C.L. Hitchc. 


Glossopetalon spinescens Gray 

spiny greasebush 

Glossopetalon spinescens var. aridum M.E. Jones 

spiny greasebush 

CRUCIFERAE 

Alyssum alyssoides (L.) L. 

pale madwort 

Alyssum desertorum Stapf 

desert madwort 

Arabidopsis thaliana (L.) Heynh. 

mouseear cress 

Arabis X divaricarpa A. Nels. (pro sp.) 

spreadingpod rockcress 

Arabis crucisetosa Constance & Rollins 

wetsoil rockcress 

Arabis cusickii S. Wats. 

Cusick's rockcress 

Arabis drummondii Gray 

Drummond's rockcress 

Arabis furcata S. Wats. 

Columbia Gorge rockcress 

Arabis furcata var. furcata S. Wats. 


Arabis furcata var. olympica (Piper) Rollins 


Arabis glabra (L.) Bernh. 

tower rockcress 

Arabis glabra var. glabra (L.) Bernh. 

tower rockcress 

Arabis hirsuta (L.) Scop. 

hairy rockcress 

Arabis hirsuta var. eschscholtziana (Andrz.) Rollins 

Eschscholtz's hairy rockcress 

Arabis hirsuta var. glabrata Torr. & Gray 

mountain rockcress 

Arabis holboellii Hornem. 

Holboell's rockcress 

Arabis holboellii var. holboellii Hornem. 


Arabis holboellii var. pendulocarpa (A. Nels.) Rollins 

dropseed rockcress 

Arabis holboellii var. pinetorum (Tidestrom) Rollins 


Arabis holboellii var. retrofracta (Graham) Rydb. 

second rockcress 

Arabis lemmonii S. Wats. 

Lemmon's rockcress 

Arabis lemmonii var. lemmonii S. Wats. 

Lemmon's rockcress 

Arabis lemmonii var. paddoensis Rollins 

Paddo rockcress 

Arabis lyallii S. Wats. 

Lyall's rockcress 

Arabis lyrata L. 

lyrate rockcress 

Arabis lyrata var. kamchatica Fisch. ex DC. 

Kamchatica rockcress 

Arabis microphylla Nutt. 

littleleaf rockcress 

Arabis microphylla var. microphylla Nutt. 

smallleaf rockcress 

Arabis nuttallii B.L. Robins. 

Nuttall's rockcress 

Arabis perennans S. Wats. 

perennial rockcress 


Arabis puberula Nutt. 

shepherd's purse 

silver rockcress 

Cardamine angulata Hook. 

Arabis sparsiflora Nutt. 

seaside bittercress 

sicklepod rockcress 

Cardamine bellidifolia L. 

Arabis sparsiflora var. atrorubens (Suksdorf ex Greene) Rollins alpine bittercress 

elegant rockcress 

Cardamine bellidifolia var. bellidifolia L. 

Arabis sparsiflora var. sparsiflora Nutt. 

alpine bittercress 

sicklepod rockcress 

Cardamine breweri S. Wats. 

Arabis sparsiflora var. subvillosa (S. Wats.) Rollins 

Brewer's bittercress 

hairystem rockcress 

Cardamine breweri var. breweri S. Wats. 

Arabis suffrutescens S. Wats. 

Brewer's bittercress 

woody rockcress 

Cardamine breweri var. leibergii (Holz.) C.L. Hitchc. 

Arabis suffrutescens var. suffrutescens S. Wats. 

Leiberg's bittercress 

woody rockcress 

Cardamine breweri var. orbicularis (Greene) Detling 

Armoracia rusticana P.G. Gaertn., B. Mey. & Scherb. 

Sierran bittercress 

horseradish 

Cardamine cordifolia Gray 

Athysanus pusillus (Hook.) Greene 

heartleaf bittercress 

common sandweed 

Cardamine cordifolia var. lyallii (S. Wats.) A. Nels. & J.F. Macbr. 

Barbarea orthoceras Ledeb. 

Cardamine nuttallii Greene 

American yellowrocket 

Nuttall's toothwort 

Barbarea verna (P. Mill.) Aschers. 

Cardamine nuttallii var. nuttallii Greene 

early yellowrocket 

palmate toothwort 

Barbarea vulgaris Ait. f. 

Cardamine occidentalis (S. Wats. ex B.L. Robins.) T.J. Howell 

garden yellowrocket 

big western bittercress 

Berteroa incana (L.) DC. 

Cardamine oligosperma Nutt. 

hoary false madwort 

Idaho bittercress 

Brassica juncea (L.) Czern. 

Cardamine oligosperma var. kamtschatica (Regel) Detling 

India mustard 

umbel bittercress 

Brassica nigra (L.) W.D.J. Koch 

Cardamine oligosperma var. oligosperma Nutt. 

black mustard 

little western bittercress 

Brassica oleracea L. 

Cardamine pensylvanica Muhl. ex Willd. 

cabbage 

Pennsylvania bittercress 

Brassica oleracea var. acephala DC. 

Cardaria chalapensis (L.) Hand.-Maz. 

cabbage 

Cardaria draba (L.) Desv. 

Brassica rapa L. 

pepperweed whitetop 

rape mustard 

Cardaria draba ssp. draba (L.) Desv. 

Brassica rapa var. rapa L. 

heartpod hoarycress 

birdrape 

Cardaria pubescens (C.A. Mey.) Jarmolenko 

Cakile edentula (Bigelow) Hook. 

hairy whitetop 

American searocket 

Caulanthus lasiophyllus var. lasiophyllus (Hook. & Arn.) Payson 

Camelina microcarpa DC. 

coast range wild cabbage 

littlepod falseflax 

Chorispora tenella (Pallas) DC. 

Camelina sativa (L.) Crantz 

crossflower 

gold-of-pleasure 

Cochlearia armoracia L. 

Capsella bursa-pastoris (L.) Medik. 

= Armoracia rusticana 


Cochlearia groenlandica L. 

Draba longipes Raup 

Danish scurvygrass 

longstalk whitlowgrass 

Conringia orientalis (L.) Dumort. 

Draba nemorosa L. 

hare's ear mustard 

woodland whitlowgrass 

Coronopus didymus (L.) Sm. 

Draba oligosperma Hook. 

lesser swinecress 

fewseed whitlowgrass 

Cusickiella douglasii (Gray) Rollins 

Draba paysonii J.F. Macbr. 

alkali false whitlowgrass 

Payson's whitlowgrass 

Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn 

Draba paysonii var. treleasii (O.E. Schulz) C.L. Hitchc. 

mountain tansymustard 

Trelease's whitlowgrass 

Descurainia incana ssp. incisa (Engelm.) Kartesz & Gandhi 

Draba platycarpa Torr. & Gray 


broadpod whitlowgrass 

Descurainia incana ssp. viscosa (Rydb.) Kartesz & Gandhi 

Draba praealta Greene 


tall whitlowgrass 

Descurainia pinnata (Walt.) Britt. 

Draba reptans (Lam.) Fern. 

western tansymustard 

Carolina whitlowgrass 

Descurainia pinnata ssp. filipes (Gray) Detling 

Draba ruaxes Payson & St. John 

western tansymustard 

Rainier whitlowgrass 

Descurainia pinnata ssp. nelsonii (Rydb.) Detling 

Draba verna L. 

Nelson's tansymustard 

spring whitlowgrass 

Descurainia sophia (L.) Webb ex Prantl 

Eruca vesicaria (L.) Cav. 

herb sophia 

rocketsalad 

Draba albertina Greene 

Eruca vesicaria ssp. sativa (P. Mill.) Thellung 

slender whitlowgrass 

rocketsalad 

Draba aurea Vahl ex Hornem. 

Erucastrum gallicum (Willd.) O.E. Schulz 

golden whitlowgrass 

common dogmustard 

Draba aureola S. Wats. 

Erysimum arenicola S. Wats. 

Mt. Lassen whitlowgrass 

cascade wallflower 

Draba breweri S. Wats. 

Erysimum arenicola var. arenicola S. Wats. 

cushion whitlowgrass 


Draba breweri var. cana (Rydb.) Rollins 

Erysimum arenicola var. torulosum (Piper) C.L. Hitchc. 

Draba crassifolia Graham 


snowbed whitlowgrass 

Erysimum capitatum (Dougl. ex Hook.) Greene 

Draba crassifolia var. crassifolia Graham 

sanddune wallflower 

snowbed whitlowgrass 

Erysimum capitatum var. capitatum (Dougl. ex Hook.) Greene 

Draba densifolia Nutt. 

sanddune wallflower 

denseleaf whitlowgrass 

Erysimum cheiranthoides L. 

Draba incerta Payson 

wormseed wallflower 

Yellowstone whitlowgrass 

Erysimum inconspicuum (S. Wats.) MacM. 

Draba lonchocarpa Rydb. 

shy wallflower 

lancepod whitlowgrass 

Erysimum inconspicuum var. inconspicuum (S. Wats.) MacM. 

Draba lonchocarpa var. lonchocarpa Rydb. 

shy wallflower 

lancepod whitlowgrass 

Erysimum occidentale (S. Wats.) B.L. Robins. 

Draba lonchocarpa var. thompsonii (C.L. Hitchc.) Rollins 

pale wallflower 

Thompson's whitlowgrass 

Erysimum repandum L. 


spreading wallflower 

Virginia pepperweed 

Euclidium syriacum (L.) Ait. f. 

Lepidium virginicum var. medium (Greene) C.L. Hitchc. 

Syrian mustard 

medium pepperweed 

Guillenia lasiophylla (Hook. & Arn.) Greene 

Lepidium virginicum var. menziesii (DC.) C.L. Hitchc. 

Halimolobos whitedii (Piper) Rollins 

Menzies' pepperweed 

Whited's fissurewort 

Lepidium virginicum var. pubescens (Greene) Thellung 

Hesperis matronalis L. 

hairy pepperweed 

dames rocket 

Lesquerella douglasii S. Wats. 

Hutchinsia procumbens (L.) Desv. 

Douglas' bladderpod 

prostrate hutchinsia 

Lesquerella kingii ssp. diversifolia (Greene) Rollins & Shaw 

Idahoa scapigera (Hook.) A. Nels. & J.F. Macbr. 

Wallowa bladderpod 

oldstem idahoa 

Lesquerella occidentalis S. Wats. 

Lepidium bourgeauanum Thellung 

western bladderpod 

Bourgeau's pepperweed 

Lunaria annua L. 

Lepidium campestre (L.) Ait. f. 

annual honesty 

field pepperweed 

Nasturtium nasturtium-aquaticum (L.) Karsten 

Lepidium densiflorum Schrad. 

= Rorippa nasturtium-aquaticum 

common pepperweed 

Nasturtium officinale Ait. f. 

Lepidium densiflorum var. densiflorum Schrad. 

= Rorippa nasturtium-aquaticum 

common pepperweed 

Neslia paniculata (L.) Desv. 

Lepidium densiflorum var. elongatum (Rydb.) Thellung 

ballmustard 

tall pepperweed 

Phoenicaulis cheiranthoides Nutt. 

Lepidium densiflorum var. macrocarpum Mulligan 

wallflower phoenicaulis 

bigseed pepperweed 

Physaria alpestris Suksdorf 

Lepidium densiflorum var. pubecarpum (A. Nels.) Thellung 

Washington twinpod 

babyseed pepperweed 

Physaria didymocarpa (Hook.) Gray 

Lepidium dictyotum Gray 

common twinpod 

net pepperweed 

Physaria didymocarpa var. didymocarpa (Hook.) Gray 

Lepidium dictyotum var. acutidens Gray 

common twinpod 

alkali pepperwort 

Physaria geyeri (Hook.) Gray 

Lepidium dictyotum var. dictyotum Gray 

Geyer's twinpod 

alkali pepperweed 

Physaria geyeri var. geyeri (Hook.) Gray 

Lepidium nitidum Nutt. 

Geyer's twinpod 

shining pepperweed 

Physaria oregona S. Wats. 

Lepidium nitidum var. nitidum Nutt. 

Oregon twinpod 

shining pepperweed 

Radicula armoracia (L.) B.L. Robins. 

Lepidium oxycarpum Torr. & Gray 

= Armoracia rusticana 

forked pepperweed 

Raphanus raphanistrum L. 

Lepidium perfoliatum L. 

wild radish 

clasping pepperweed 

Raphanus sativus L. 

Lepidium ramosissimum A. Nels. 

wild radish 

manybranched pepperweed 

Rorippa columbiae (Suksdorf ex B.L. Robins.) Suksdorf ex T.J. Howell 

Lepidium sativum L. 

Columbian yellowcress 

gardencress pepperweed 

Rorippa curvipes Greene 

Lepidium virginicum L. 

bluntleaf yellowcress 


Rorippa curvipes var. curvipes Greene 

bluntleaf yellowcress 

Rorippa curvipes var. truncata (Jepson) Rollins 

Rorippa curvisiliqua (Hook.) Bess. ex Britt. 

curvepod yellowcress 

Rorippa curvisiliqua var. curvisiliqua (Hook.) Bess. ex Britt. 


Rorippa curvisiliqua var. lyrata (Nutt.) M.E. Peck ex C.L. Hitchc. 

lyrateleaf yellowcress 

Rorippa curvisiliqua var. nuttallii (S. Wats.) R. Stuckey 

Nuttall's yellowcress 

Rorippa curvisiliqua var. orientalis R. Stuckey 

oriental yellowcress 

Rorippa curvisiliqua var. procumbens R. Stuckey 


Rorippa nasturtium-aquaticum (L.) Hayek 

watercress 

Rorippa palustris (L.) Bess. 

bog yellowcress 

Rorippa palustris ssp. fernaldiana (Butters & Abbe) Jonsell 

Fernald's yellowcress 

Rorippa palustris ssp. hispida (Desv.) Jonsell 

hispid yellowcress 

Rorippa palustris ssp. occidentalis (S. Wats.) Abrams 

western bog yellowcress 

Rorippa sinuata (Nutt.) A.S. Hitchc. 

spreading yellowcress 

Rorippa sylvestris (L.) Bess. 

creeping yellowcress 

Rorippa tenerrima Greene 

Modoc yellowcress 

Rorippa teres (Michx.) R. Stuckey 

southern marsh yellowcress 

Schoenocrambe linifolia (Nutt.) Greene 

flaxleaf plainsmustard 

Sinapis alba L. 

white mustard 

Sinapis arvensis L. 

charlock mustard 

Sinapis nigra L. 

= Brassica nigra 

Sisymbrium altissimum L. 

tall tumblemustard 

Sisymbrium loeselii L. 

small tumbleweed mustard 


Sisymbrium officinale (L.) Scop. 

hedgemustard 

Smelowskia calycina (Steph. ex Willd.) C.A. Mey. 

alpine smelowskia 

Smelowskia calycina var. americana (Regel & Herder) Drury & Rollins 

American false candytuft 

Smelowskia ovalis M.E. Jones 

alpine false candytuft 

Smelowskia ovalis var. ovalis M.E. Jones 

alpine false candytuft 

Streptanthella longirostris (S. Wats.) Rydb. 

longbeak streptanthella 

Subularia aquatica L. 

waterawlwort 

Subularia aquatica var. americana (Mulligan & Calder) Boivin 

American waterawlwort 

Teesdalia nudicaulis (L.) Ait. f. 

barestem teesdalia 

Thelypodium integrifolium (Nutt.) Endl. ex Walp. 

entireleaved thelypody 

Thelypodium integrifolium ssp. integrifolium (Nutt.) Endl. ex Walp. 

entireleaved thelypody 

Thelypodium laciniatum (Hook.) Endl. ex Walp. 

cutleaf thelypody 

Thelypodium milleflorum A. Nels. 

manyflower thelypody 

Thelypodium sagittatum (Nutt. ex Torr. & Gray) Endl. ex Walp. 

arrow thelypody 

Thelypodium sagittatum ssp. sagittatum (Nutt. ex Torr. & Gray) Endl. 

ex Walp. 

arrow thelypody 

Thlaspi arvense L. 

field pennycress 

Thlaspi montanum L. 

alpine pennycress 

Thlaspi montanum var. montanum L. 

alpine pennycress 

Thlaspi perfoliatum L. 

claspleaf pennycress 

Thysanocarpus curvipes Hook. 

sand fringepod 

Turritis 

= Arabis

CUCURBITACEAE 

Echinocystis lobata (Michx.) Torr. & Gray 

wild cucumber 

Marah oreganus (Torr. ex S. Wats.) T.J. Howell 

coastal manroot 

CUPRESSACEAE 

Chamaecyparis nootkatensis (D. Don) Spach 

Alaska cedar 

Juniperus communis L. 

common juniper 

Juniperus communis var. montana Ait. 

common juniper 

Juniperus occidentalis Hook. 

western juniper 

Juniperus occidentalis var. occidentalis Hook. 

western juniper 

Juniperus scopulorum Sarg. 

Rocky Mountain juniper 

Juniperus sibirica Burgsd. 

= Juniperus communis var. montana 

Thuja plicata Donn ex D. Don 

western redcedar 

DENNSTAEDTIACEAE 

Pteridium aquilinum (L.) Kuhn 

western brackenfern 

Pteridium aquilinum var. pubescens Underwood 

hairy brackenfern 

DIPSACACEAE 

Dipsacus fullonum L. 

Fuller's teasel 

DROSERACEAE 

Drosera anglica Huds. 

English sundew 

Drosera rotundifolia L. 

roundleaf sundew 

DRYOPTERIDACEAE 

Athyrium americanum (Butters) Maxon 

alpine ladyfern 


Athyrium filix-femina (L.) Roth 

common ladyfern 

Athyrium filix-femina ssp. cyclosorum (Rupr.) C. Christens. 

subarctic ladyfern 

Cystopteris fragilis (L.) Bernh. 

brittle bladderfern 

Dryopteris arguta (Kaulfuss) Watt 

coastal woodfern 

Dryopteris campyloptera Clarkson 

mountain woodfern 

Dryopteris carthusiana (Vill.) H.P. Fuchs 

spinulose woodfern 

Dryopteris cristata (L.) Gray 

crested woodfern 

Dryopteris expansa (K. Presl) Fraser-Jenkins & Jermy 

spreading woodfern 

Dryopteris filix-mas (L.) Schott 

male fern 

Gymnocarpium disjunctum (Rupr.) Ching 

Pacific oakfern 

Polystichum andersonii Hopkins 

Anderson's hollyfern 

Polystichum californicum (D.C. Eat.) Diels 

California swordfern 

Polystichum imbricans (D.C. Eat.) D.H. Wagner 

narrowleaf swordfern 

Polystichum imbricans ssp. imbricans (D.C. Eat.) D.H. Wagner 

narrowleaf swordfern 

Polystichum kruckebergii W.H. Wagner 

Kruckeberg's hollyfern 

Polystichum lemmonii Underwood 

Lemmon's hollyfern 

Polystichum lonchitis (L.) Roth 

northern hollyfern 

Polystichum munitum (Kaulfuss) K. Presl 

western swordfern 

Polystichum scopulinum (D.C. Eat.) Maxon 

mountain hollyfern 

Woodsia oregana D.C. Eat. 

Oregon woodsia 

Woodsia oregana ssp. oregana D.C. Eat. 

Oregon cliff fern 

Woodsia scopulina D.C. Eat. 

Rocky Mountain woodsia

ELAEAGNACEAE 

Shepherdia canadensis (L.) Nutt. 

russet buffaloberry 

ELATINACEAE 

Bergia texana (Hook.) Seub. ex Walp. 

Texas bergia 

Elatine americana (Pursh) Arn. 

American waterwort 

Elatine brachysperma Gray 

shortseed waterwort 

Elatine californica Gray 

California waterwort 

Elatine triandra Schkuhr 

threestamen waterwort 

EMPETRACEAE 

Empetrum nigrum L. 

black crowberry 

Empetrum nigrum ssp. hermaphroditum (Lange ex Hagerup) Bocher 

black crowberry 

EQUISETACEAE 

Equisetum X ferrissii Clute (pro sp.) 

Ferriss' horsetail 

Equisetum X mackaii (Newm.) Brichan 

MacKai's horsetail 

Equisetum arvense L. 

field horsetail 

Equisetum fluviatile L. 

water horsetail 

Equisetum hyemale L. 

scouringrush horsetail 

Equisetum hyemale var. affine (Engelm.) A.A. Eat. 

scouringrush horsetail 

Equisetum laevigatum A. Braun 

smooth horsetail 

Equisetum palustre L. 

marsh horsetail 

Equisetum scirpoides Michx. 

dwarf scouringrush 

Equisetum sylvaticum L. 


woodland horsetail 

Equisetum telmateia Ehrh. 

giant horsetail 

Equisetum telmateia var. braunii (Milde) Milde 

giant horsetail 

Equisetum variegatum Schleich. ex F. Weber & D.M.H. Mohr 

variegated scouringrush 

Equisetum variegatum var. alaskanum A.A. Eat. 

Alaskan scouringrush 

Equisetum variegatum var. variegatum Schleich. ex F. Weber & 

D.M.H. Mohr 

variegated scouringrush 

ERICACEAE 

Andromeda polifolia L. 

bog rosemary 

Arbutus menziesii Pursh 

Pacific madrone 

Arctostaphylos X media Greene (pro sp.) 

intermediate manzanita 

Arctostaphylos columbiana Piper 

hairy manzanita 

Arctostaphylos nevadensis Gray 

pinemat manzanita 

Arctostaphylos nevadensis ssp. nevadensis Gray 

pinemat manzanita 

Arctostaphylos patula Greene 

greenleaf manzanita 

Arctostaphylos pungens ssp. nevadensis (Gray) J.B. Roof 

= Arctostaphylos nevadensis 

Arctostaphylos uva-ursi (L.) Spreng. 

kinnikinnick 

Cassiope lycopodioides (Pallas) D. Don 

clubmoss mountain heather 

Cassiope lycopodioides var. cristapilosa (Calder & Taylor) Boivin 

clubmoss mountain heather 

Cassiope mertensiana (Bong.) D. Don 

western moss heather 

Cassiope mertensiana var. mertensiana (Bong.) D. Don 

western moss heather 

Cassiope tetragona (L.) D. Don 

white arctic mountain heather 

Cassiope tetragona var. saximontana (Small) C.L. Hitchc. 

white arctic mountain heather

Chimaphila menziesii (R. Br. ex D. Don) Spreng. 

hybrid mountainheath 

little prince's pine 

Phyllodoce empetriformis (Sm.) D. Don 

Chimaphila umbellata (L.) W. Bart. 

pink mountainheath 

pipsissewa 

Phyllodoce glanduliflora (Hook.) Coville 

Chimaphila umbellata ssp. occidentalis (Rydb.) Hulten 

yellow mountainheath 

pipsissewa 

Pyrola asarifolia Michx. 

Elliottia pyroliflorus (Bong.) S.W. Brim & P.F. Stevens 

liverleaf wintergreen 

copperbush 

Pyrola asarifolia ssp. asarifolia Michx. 

Gaultheria hispidula (L.) Muhl. ex Bigelow 

liverleaf wintergreen 

creeping snowberry 

Pyrola asarifolia ssp. bracteata (Hook.) Haber 

Gaultheria humifusa (Graham) Rydb. 

pink wintergreen 

alpine spicywintergreen 

Pyrola chlorantha Sw. 

Gaultheria ovatifolia Gray 

greenflowered wintergreen 

western teaberry 

Pyrola minor L. 

Gaultheria shallon Pursh 

snowline wintergreen 

salal 

Pyrola pallida Greene 

Harrimanella stelleriana (Pallas) Coville 

= Pyrola picta 

Alaska bellheather 

Pyrola picta Sm. 

Kalmia microphylla (Hook.) Heller 

whiteveined wintergreen 

alpine laurel 

Pyrola rotundifolia ssp. asarifolia (Michx.) A.& D. Love 

Kalmia polifolia ssp. microphylla (Hook.) Calder & Taylor 

= Pyrola asarifolia ssp. asarifolia 

= Kalmia microphylla 

Pyrola secunda L. 

Ledum X columbianum Piper (pro sp.) 

= Orthilia secunda 

coast Labradortea 

Pyrola uliginosa Torr. & Gray ex Torr. 

Ledum glandulosum Nutt. 

= Pyrola asarifolia ssp. asarifolia 

Western Labradortea 

Pyrola uniflora L. 

Ledum groenlandicum Oeder 

= Moneses uniflora ssp. uniflora 

bog Labradortea 

Pyrola virens Schreb. 

Ledum palustre ssp. groenlandicum (Oeder) Hulten 

= Pyrola chlorantha 

= Ledum groenlandicum 

Rhododendron albiflorum Hook. 

Loiseleuria procumbens (L.) Desv. 

Cascade azalea 

alpine azalea 

Rhododendron macrophyllum D. Don ex G. Don 

Menziesia ferruginea Sm. 

Pacific rhododendron 

rusty menziesia 

Vaccinium cespitosum Michx. 

Moneses uniflora (L.) Gray 

dwarf blueberry 

single delight 

Vaccinium deliciosum Piper 

Moneses uniflora ssp. reticulata (Nutt.) Calder & Taylor 

blueleaved huckleberry 

single delight 

Vaccinium macrocarpon Ait. 

Moneses uniflora ssp. uniflora (L.) Gray 

cranberry 

oneflowered woodnymph 

Vaccinium membranaceum Dougl. ex Torr. 

Orthilia secunda (L.) House 

blue huckleberry 

sidebells wintergreen 

Vaccinium myrtilloides Michx. 

Oxycoccus 

velvetleaf huckleberry 

= Vaccinium 

Vaccinium myrtillus L. 

Phyllodoce X intermedia (Hook.) Rydb. (pro sp.) 

whortleberry 


Vaccinium ovalifolium Sm. 

ovalleaf blueberry 

Vaccinium ovatum Pursh 

evergreen huckleberry 

Vaccinium ovatum var. ovatum Pursh 


Vaccinium ovatum var. saporosum Jepson 


Vaccinium oxycoccos L. 

small cranberry 

Vaccinium parvifolium Sm. 

red huckleberry 

Vaccinium scoparium Leib. ex Coville 

grouse whortleberry 

Vaccinium uliginosum L. 

bog blueberry 

EUPHORBIACEAE 

Chamaesyce glyptosperma (Engelm.) Small 

ribseed sandmat 

Chamaesyce maculata (L.) Small 

spotted sandmat 

Chamaesyce serpyllifolia (Pers.) Small 

thymeleaf sandmat 

Chamaesyce serpyllifolia ssp. serpyllifolia (Pers.) Small 

thymeleaf sandmat 

Croton setigerus Hook. 

croton 

Eremocarpus setigerus (Hook.) Benth. 

= Croton setigerus 

Euphorbia cyparissias L. 

cypress spurge 

Euphorbia esula L. 

wolf's milk 

Euphorbia glyptosperma Engelm. 

= Chamaesyce glyptosperma 

Euphorbia helioscopia L. 

madwoman's milk 

Euphorbia lathyris L. 

moleplant 

Euphorbia maculata L. 

= Chamaesyce maculata 

Euphorbia neomexicana Greene 

= Chamaesyce serpyllifolia ssp. serpyllifolia 

Euphorbia peplus L. 


petty spurge 

Euphorbia serpyllifolia Pers. 

= Chamaesyce serpyllifolia ssp. serpyllifolia 

Euphorbia spathulata Lam. 

warty spurge 

Euphorbia supina Raf. 

= Chamaesyce maculata 

FAGACEAE 

Castanopsis chrysophylla (Dougl. ex Hook.) A. DC. 

= Chrysolepis chrysophylla var. chrysophylla 

Chrysolepis chrysophylla (Dougl. ex Hook.) Hjelmqvist 

Chrysolepis chrysophylla var. chrysophylla (Dougl. ex Hook.) 

Hjelmqvist 

Quercus garryana Dougl. ex Hook. 

Oregon white oak 

Quercus garryana var. garryana Dougl. ex Hook. 

Oregon white oak 

FUMARIACEAE 

Corydalis aquae-gelidae M.E. Peck & Wilson 

coldwater fumewort 

Corydalis aurea Willd. 

scrambledeggs 

Corydalis aurea ssp. aurea Willd. 

scrambledeggs 

Corydalis scouleri Hook. 

Scouler's fumewort 

Dicentra cucullaria (L.) Bernh. 

dutchman's breeches 

Dicentra formosa (Haw.) Walp. 

Pacific bleedinghearts 

Dicentra formosa ssp. formosa (Haw.) Walp. 

Pacific bleedinghearts 

Dicentra uniflora Kellogg 

longhorn steershead 

Fumaria officinalis L. 

drug fumitory 

GARRYACEAE 

Garrya fremontii Torr. 

silk tassel

GENTIANACEAE 

Amarella . 

= Gentianella amarella ssp. acuta 

Centaurium erythraea Rafn 

European centaury 

Centaurium exaltatum (Griseb.) W. Wight ex Piper 

desert centaury 

Centaurium minus auct. non Moench 

= Centaurium erythraea 

Centaurium muehlenbergii (Griseb.) W. Wight ex Piper 

Muhlenberg's centaury 

Cicendia exaltata Griseb. 

= Centaurium exaltatum 

Erythraea centaurium of authors 

= Centaurium erythraea 

Frasera albicaulis Dougl. ex Griseb. 

whitestem elkweed 

Frasera albicaulis var. albicaulis Dougl. ex Griseb. 


Frasera albicaulis var. columbiana (St. John) C.L. Hitchc. 


Frasera albicaulis var. nitida (Benth.) C.L. Hitchc. 


Frasera fastigiata (Pursh) Heller 

clustered elkweed 

Frasera speciosa Dougl. ex Griseb. 

green gentian 

Gentiana affinis Griseb. 

pleated gentian 

Gentiana amarella L. auct. p.p. 


Gentiana calycosa Griseb. 

Rainier pleated gentian 

Gentiana douglasiana Bong. 

swamp gentian 

Gentiana forwoodii Gray 

= Gentiana affinis 

Gentiana glauca Pallas 

pale gentian 

Gentiana oregana Engelm. ex Gray 


Gentiana parryi Engelm. 

Parry's gentian 

Gentiana plebeja Ledeb. ex Spreng. 



Gentiana rusbyi Greene 


Gentiana sceptrum Griseb. 

king's scepter gentian 

Gentiana tenella Rottb. 

= Gentianella tenella ssp. tenella 

Gentianella amarella (L.) Boerner 

autumn dwarfgentian 

Gentianella amarella ssp. acuta (Michx.) J. Gillett 

autumn dwarfgentian 

Gentianella tenella (Rottb.) Boerner 

Dane's dwarfgentian 

Gentianella tenella ssp. tenella (Rottb.) Boerner 

Dane's dwarfgentian 

Swertia albicaulis (Dougl. ex Griseb.) Kuntze 

= Frasera albicaulis var. albicaulis 

Swertia perennis L. 

star gentian 

Swertia radiata (Kellogg) Kuntze 

= Frasera speciosa 

GERANIACEAE 

Erodium cicutarium (L.) L'Her. ex Ait. 

redstem stork's bill 

Erodium moschatum (L.) L'Her. ex Ait. 

musky stork's bill 

Geranium bicknellii Britt. 

Bicknell's cranesbill 

Geranium bicknellii var. longipes (S. Wats.) Fern. 

northern cranesbill 

Geranium carolinianum L. 

Carolina geranium 

Geranium carolinianum var. carolinianum L. 


Geranium carolinianum var. sphaerospermum (Fern.) Breitung 


Geranium columbinum L. 

longstalk cranesbill 

Geranium dissectum L. 

cutleaf geranium 

Geranium molle L. 

dovefoot geranium

Geranium oreganum T.J. Howell 

Oregon geranium 

Geranium pusillum L. 

small geranium 

Geranium richardsonii Fisch. & Trautv. 

Richardson's geranium 

Geranium robertianum L. 

Robert geranium 

Geranium viscosissimum Fisch. & C.A. Mey. ex C.A. Mey. 

sticky geranium 

Geranium viscosissimum var. nervosum (Rydb.) C.L. Hitchc. 

sticky purple geranium 

Geranium viscosissimum var. viscosissimum Fisch. & C.A. Mey. ex 

C.A. Mey. 

sticky purple geranium 

GROSSULARIACEAE 

Grossularia 

= Ribes 

Ribes acerifolium T.J. Howell 

mapleleaf currant 

Ribes aureum Pursh 

golden currant 

Ribes aureum var. aureum Pursh 

golden currant 

Ribes bracteosum Dougl. ex Hook. 

stink currant 

Ribes cereum Dougl. 

wax currant 

Ribes cereum var. cereum Dougl. 

wax currant 

Ribes cereum var. colubrinum C.L. Hitchc. 

wax currant 

Ribes divaricatum Dougl. 

spreading gooseberry 

Ribes divaricatum var. divaricatum Dougl. 

coastal black gooseberry 

Ribes hudsonianum Richards. 

northern black currant 

Ribes hudsonianum var. hudsonianum Richards. 

Hudson Bay currant 

Ribes hudsonianum var. petiolare (Dougl.) Jancz. 

western black currant 

Ribes inerme Rydb. 

whitestem gooseberry 


Ribes inerme var. inerme Rydb. 

whitestem gooseberry 

Ribes lacustre (Pers.) Poir. 

prickly currant 

Ribes laxiflorum Pursh 

trailing black currant 

Ribes lobbii Gray 

gummy gooseberry 

Ribes montigenum McClatchie 

gooseberry currant 

Ribes niveum Lindl. 

snow currant 

Ribes oxyacanthoides L. 

Canadian gooseberry 

Ribes oxyacanthoides ssp. cognatum (Greene) Sinnott 

stream currant 

Ribes oxyacanthoides ssp. irriguum (Dougl.) Sinnott 

Idaho gooseberry 

Ribes rubrum L. 

cultivated currant 

Ribes sanguineum Pursh 

redflower currant 

Ribes sanguineum var. sanguineum Pursh 

redflower currant 

Ribes triste Pallas 

red currant 

Ribes velutinum Greene 

desert gooseberry 

Ribes velutinum var. gooddingii (M.E. Peck) C.L. Hitchc. 

Gooding's gooseberry 

Ribes viscosissimum Pursh 

sticky currant 

Ribes viscosissimum var. viscosissimum Pursh 

sticky currant 

Ribes watsonianum Koehne 

spring gooseberry 

Ribes wolfii Rothrock 

Wolf's currant 

HALORAGACEAE 

Myriophyllum hippuroides Nutt. ex Torr. & Gray 

western watermilfoil 

Myriophyllum sibiricum Komarov 

shortspike watermilfoil

Myriophyllum verticillatum L. 

whorlleaf watermilfoil 

HIPPURIDACEAE 

Hippuris montana Ledeb. 

mountain marestail 

Hippuris vulgaris L. 

common marestail 

HYDRANGEACEAE 

Philadelphus confusus Piper 

Piper's mockorange 

Philadelphus lewisii Pursh 

Lewis' mockorange 

Philadelphus lewisii var. angustifolius (Rydb.) Hu 


Philadelphus lewisii var. ellipticus Hu 


Philadelphus lewisii var. gordonianus (Lindl.) Jepson 

Gordon's mockorange 

Philadelphus lewisii var. helleri (Rydb.) Hu 

Heller's mockorange 

Philadelphus lewisii var. lewisii Pursh 


Philadelphus lewisii var. oblongifolius Hu 


Philadelphus lewisii var. platyphyllus (Rydb.) Hu 


Philadelphus trichothecus Hu 

Columbian mockorange 

Philadelphus zelleri Hu 

Zeller's mockorange 

Whipplea modesta Torr. 

common whipplea 

HYDROCHARITACEAE 

Egeria densa Planch. 

Brazilian waterweed 

Elodea canadensis Michx. 

Canadian waterweed 

Elodea nuttallii (Planch.) St. John 

western waterweed 

Philotria 

= Elodea 

Vallisneria americana Michx. 

American eelgrass 


HYDROPHYLLACEAE 

Hesperochiron californicus (Benth.) S. Wats. 

California hesperochiron 

Hesperochiron pumilus (Dougl. ex Griseb.) Porter 

dwarf hesperochiron 

Hydrophyllum capitatum Dougl. ex Benth. 

ballhead waterleaf 

Hydrophyllum capitatum var. capitatum Dougl. ex Benth. 

ballhead waterleaf 

Hydrophyllum capitatum var. thompsonii (M.E. Peck) Constance 

Thompson's waterleaf 

Hydrophyllum fendleri (Gray) Heller 

Fendler's waterleaf 

Hydrophyllum fendleri var. albifrons (Heller) J.F. Macbr. 

white waterleaf 

Hydrophyllum fendleri var. fendleri (Gray) Heller 

Fendler's waterleaf 

Hydrophyllum tenuipes Heller 

Pacific waterleaf 

Nama aretioides (Hook. & Arn.) Brand 

ground nama 

Nama densum J.G. Lemmon 

leafy nama 

Nama densum var. parviflorum (Greenm.) C.L. Hitchc. 

leafy fiddleleaf 

Nemophila breviflora Gray 

basin nemophila 

Nemophila kirtleyi Henderson 

Kirtley's nemophila 

Nemophila parviflora Dougl. ex Benth. 

smallflower nemophila 

Nemophila parviflora var. austiniae (Eastw.) Brand 

groovelover 

Nemophila parviflora var. parviflora Dougl. ex Benth. 

groovelover 

Nemophila pedunculata Dougl. ex Benth. 

littlefoot nemophila 

Phacelia bolanderi Gray 

Bolander's scorpionweed 

Phacelia franklinii (R. Br.) Gray 

Franklin's phacelia

Phacelia glandulifera Piper 

Phacelia hastata Dougl. ex Lehm. 

silverleaf phacelia 

Phacelia hastata var. hastata Dougl. ex Lehm. 

silverleaf phacelia 

Phacelia heterophylla Pursh 

varileaf phacelia 

Phacelia heterophylla ssp. heterophylla Pursh 


Phacelia heterophylla ssp. virgata (Greene) Heckard 


Phacelia humilis Torr. & Gray 

low scorpionweed 

Phacelia humilis var. humilis Torr. & Gray 

low scorpionweed 

Phacelia ivesiana Torr. 

Ives' phacelia 

Phacelia lenta Piper 

sticky scorpionweed 

Phacelia leptosepala Rydb. 

narrowsepal scorpionweed 

Phacelia linearis (Pursh) Holz. 

threadleaf phacelia 

Phacelia minutissima Henderson 

small phacelia 

Phacelia mutabilis Greene 

changeable scorpionweed 

Phacelia nemoralis Greene 

shade scorpionweed 

Phacelia nemoralis ssp. oregonensis Heckard 

Oregon scorpionweed 

Phacelia procera Gray 

mountain phacelia 

Phacelia ramosissima Dougl. ex Lehm. 

branching phacelia 

Phacelia ramosissima var. ramosissima Dougl. ex Lehm. 

branching phacelia 

Phacelia sericea (Graham) Gray 

silky phacelia 

Phacelia sericea ssp. sericea (Graham) Gray 

purplefringe 

Phacelia tetramera J.T. Howell 

fourpart scorpionweed 

Romanzoffia sitchensis Bong. 

Sitka mistmaiden 

Romanzoffia tracyi Jepson 

Tracy's mistmaiden 


IRIDACEAE 

Iris missouriensis Nutt. 

Rocky Mountain iris 

Iris pseudacorus L. 

paleyellow iris 

Iris tenax Dougl. ex Lindl. 

toughleaf iris 

Iris tenax ssp. tenax Dougl. ex Lindl. 

toughleaf iris 

Olsynium douglasii (A. Dietr.) Bickn. 

Douglas' olsynium 

Olsynium douglasii var. douglasii (A. Dietr.) Bickn. 

Douglas' olsynium 

Olsynium douglasii var. inflatum (Suksdorf) Cholewa & D. Henderson 

inflated olsynium 

Sisyrinchium angustifolium P. Mill. 

narrowleaf blueeyed grass 

Sisyrinchium californicum (Ker-Gawl. ex Sims) Ait. 

golden blueeyed grass 

Sisyrinchium douglasii var. douglasii A. Dietr. 

grasswidows 

Sisyrinchium idahoense Bickn. 

Idaho blueeyed grass 

Sisyrinchium idahoense var. idahoense Bickn. 


Sisyrinchium idahoense var. macounii (Bickn.) D. Henderson 

Macoun's blueeyed grass 

Sisyrinchium idahoense var. occidentale (Bickn.) D. Henderson 


Sisyrinchium idahoense var. segetum (Bickn.) D. Henderson 


Sisyrinchium littorale Greene 

Alaska blueeyed grass 

Sisyrinchium sarmentosum Suksdorf ex Greene 

mountain blueeyed grass 

Sisyrinchium septentrionale Bickn. 

northern blueeyed grass

ISOETACEAE 

Isoetes bolanderi Engelm. 

Bolander's quillwort 

Isoetes bolanderi var. bolanderi Engelm. 

Bolander's quillwort 

Isoetes howellii Engelm. 

Howell's quillwort 

Isoetes lacustris L. 

lake quillwort 

Isoetes maritima Underwood 

maritime quillwort 

Isoetes nuttallii A. Braun ex Engelm. 

Nuttall's quillwort 

Isoetes occidentalis Henderson 

western quillwort 

LABIATAE 

Acinos arvensis (Lam.) Dandy 

basil thyme 

Agastache occidentalis (Piper) Heller 

western giant hyssop 

Agastache urticifolia (Benth.) Kuntze 

nettleleaf giant hyssop 

Agastache urticifolia var. urticifolia (Benth.) Kuntze 

nettleleaf giant hyssop 

Ajuga reptans L. 

common bugle 

Dracocephalum parviflorum Nutt. 

American dragonhead 

Galeopsis tetrahit L. 

brittlestem hempnettle 

Glechoma hederacea L. 

groundivy 

Glechoma hederacea var. hederacea L. 

groundivy 

Lamium amplexicaule L. 

henbit deadnettle 

Lamium maculatum L. 

spotted henbit 

Lamium purpureum L. 

purple deadnettle 

Leonurus cardiaca L. 

common motherwort 

Lycopus americanus Muhl. ex W. Bart. 

American waterhorehound 

Lycopus asper Greene 

rough bugleweed 

Lycopus lucidus var. americanus Gray 

= Lycopus asper 

Lycopus uniflorus Michx. 

northern bugleweed 

Marrubium vulgare L. 

horehound 

Melissa officinalis L. 

common balm 

Mentha X piperita L. (pro sp.) 

peppermint 

Mentha X villosa Huds. (pro sp.) 

hairy mint 

Mentha aquatica L. 

water mint 

Mentha arvensis var. canadensis (L.) Kuntze 

= Mentha canadensis 

Mentha canadensis L. 

Canadian mint 

Mentha citrata Ehrh. 

= Mentha aquatica 

Mentha piperita ssp. citrata (Ehrh.) Briq. 

= Mentha aquatica 

Mentha pulegium L. 

pennyroyal 

Mentha spicata L. 

spearmint 

Mentha viridis L. 

= Mentha spicata 

Micromeria chamissonis (Benth.) Greene 

= Satureja douglasii 

Moldavica parviflora (Nutt.) Britt. 

= Dracocephalum parviflorum 

Monarda didyma L. 

scarlet beebalm 

Monardella odoratissima Benth. 

Pacific monardella 

Monardella odoratissima ssp. discolor (Greene) Epling 

alpine mountainbalm 

Monardella odoratissima ssp. odoratissima Benth. 

alpine mountainbalm 

Nepeta cataria L. 

catnip 


Physostegia parviflora Nutt. ex Gray 

western false dragonhead 

Prunella vulgaris L. 

common selfheal 

Prunella vulgaris ssp. lanceolata (W. Bart.) Hulten 

lance selfheal 

Prunella vulgaris ssp. vulgaris L. 

common selfheal 

Salvia aethiopis L. 

Mediterranean sage 

Salvia carnosa Dougl. ex Greene 

= Salvia dorrii ssp. dorrii var. incana 

Salvia dorrii (Kellogg) Abrams 

grayball sage 

Salvia dorrii ssp. dorrii (Kellogg) Abrams 

Dorr's sage 

Salvia dorrii ssp. dorrii var. incana (Benth.) Strachan 

purple sage 

Salvia glutinosa L. 

sticky sage 

Salvia pratensis L. 

introduced sage 

Salvia sclarea L. 

sclary sage 

Satureja douglasii (Benth.) Briq. 

yerba buena 

Scutellaria angustifolia Pursh 

narrowleaf skullcap 

Scutellaria antirrhinoides Benth. 

nose skullcap 

Scutellaria epilobiifolia A. Hamilton 

= Scutellaria galericulata 

Scutellaria galericulata L. 

marsh skullcap 

Scutellaria lateriflora L. 

blue skullcap 

Scutellaria lateriflora var. lateriflora L. 

blue skullcap 

Stachys ajugoides Benth. 

bugle hedgenettle 

Stachys ajugoides var. rigida Jepson & Hoover 

Stachys cooleyae Heller 

Stachys palustris L. 

marsh hedgenettle 

Stachys palustris ssp. pilosa (Nutt.) Epling 


marsh hedgenettle 

Stachys rigida Nutt. ex Benth. 

= Stachys palustris ssp. pilosa 

Teucrium canadense L. 

Candad germander 

Teucrium canadense var. occidentale (Gray) McClintock & Epling 

western germander 

Thymus praecox Opiz 

mother of thyme 

Thymus praecox ssp. arcticus (Dur.) Jalas 

creeping thyme 

Thymus serpyllum auct. non L. 

= Thymus praecox ssp. arcticus 

Trichostema lanceolatum Benth. 

vinegarweed 

Trichostema oblongum Benth. 

oblong bluecurls 

LEGUMINOSAE 

Alhagi camelorum Fisch. 

= Alhagi maurorum 

Alhagi maurorum Medik. 

camelthorn 

Astragalus adsurgens Pallas 

standing milkvetch 

Astragalus adsurgens var. robustior Hook. 

prairie milkvetch 

Astragalus agrestis Dougl. ex G. Don 

purple milkvetch 

Astragalus alpinus L. 

alpine milkvetch 

Astragalus alpinus var. alpinus L. 

alpine milkvetch 

Astragalus arrectus Gray 

Palouse milkvetch 

Astragalus arthurii M.E. Jones 

waha milkvetch 

Astragalus beckwithii Torr. & Gray 

Beckwith's milkvetch 

Astragalus beckwithii var. weiserensis M.E. Jones 

Weiser's milkvetch 

Astragalus canadensis L. 

Canadian milkvetch 

Astragalus canadensis var. brevidens (Gandog.) Barneby

shorttooth Canadian milkvetch 

Astragalus misellus var. pauper Barneby 

Astragalus canadensis var. canadensis L. 

pauper milkvetch 

Canadian milkvetch 

Astragalus miser Dougl. 

Astragalus canadensis var. mortonii (Nutt.) S. Wats. 

weedy milkvetch 

Morton's Canadian milkvetch 

Astragalus miser var. miser Dougl. 

Astragalus caricinus (M.E. Jones) Barneby 

timber milkvetch 

buckwheat milkvetch 

Astragalus miser var. serotinus (Gray ex Cooper) Barneby 

Astragalus cicer L. 

timber milkvetch 

cicer milkvetch 

Astragalus mulfordiae M.E. Jones 

Astragalus collinus (Hook.) Dougl. ex G. Don 

Mulford's milkvetch 

hillside milkvetch 

Astragalus pulsiferae Gray 

Astragalus collinus var. collinus (Hook.) Dougl. ex G. Don 

Ames' milkvetch 

hillside milkvetch 

Astragalus pulsiferae var. suksdorfii (T.J. Howell) Barneby 

Astragalus columbianus Barneby 

Suksdorf's milkvetch 

Columbian milkvetch 

Astragalus purshii Dougl. ex Hook. 

Astragalus cottonii M.E. Jones 

woollypod milkvetch 

Cotton's milkvetch 

Astragalus purshii var. glareosus (Dougl. ex Hook.) Barneby 

Astragalus cusickii Gray 

gravel milkvetch 

Cusick's milkvetch 

Astragalus purshii var. purshii Dougl. ex Hook. 

Astragalus cusickii var. cusickii Gray 

Pursh's milkvetch 

Cusick's milkvetch 

Astragalus purshii var. tinctus M.E. Jones 

Astragalus falcatus Lam. 

woollypod milkvetch 

Russian milkvetch 

Astragalus reventiformis (Rydb.) Barneby 

Astragalus filipes Torr. ex Gray 

Yakima milkvetch 

threadstalk milkvetch 

Astragalus reventus Gray 

Astragalus geyeri Gray 

Blue Mountain milkvetch 

Geyer's milkvetch 

Astragalus riparius Barneby 

Astragalus geyeri var. geyeri Gray 

woodyroot milkvetch 

Geyer's milkvetch 

Astragalus robbinsii (Oakes) Gray 

Astragalus hoodianus T.J. Howell 

Robbins' milkvetch 

Hood River milkvetch 

Astragalus robbinsii var. minor (Hook.) Barneby 

Astragalus inflexus Dougl. ex Hook. 

Robbins' milkvetch 

bent milkvetch 

Astragalus sclerocarpus Gray 

Astragalus leibergii M.E. Jones 

woodypod milkvetch 

Leiberg's milkvetch 

Astragalus sheldonii (Rydb.) Barneby 

Astragalus lentiginosus Dougl. ex Hook. 

Sheldon's milkvetch 

specklepod milkvetch 

Astragalus sinuatus Piper 

Astragalus lentiginosus var. lentiginosus Dougl. ex Hook. 

Whited's milkvetch 

speckledpod milkvetch 

Astragalus spaldingii Gray 

Astragalus lyallii Gray 

Spalding's milkvetch 

Lyall's milkvetch 

Astragalus speirocarpus Gray 

Astragalus microcystis Gray 

threadstalk milkvetch 

dwarf milkvetch 

Astragalus succumbens Dougl. ex Hook. 

Astragalus misellus S. Wats. 

Columbia milkvetch 

pauper milkvetch 

Astragalus tweedyi Canby 


Tweedy's milkvetch 

Lathyrus nevadensis ssp. lanceolatus (T.J. Howell) C.L. Hitchc. 

Astragalus whitneyi Gray 

Sierran peavine 

balloon pod milkvetch 

Lathyrus nevadensis ssp. lanceolatus var. nuttallii (S. Wats.) C.L. 

Astragalus whitneyi var. sonneanus (Greene) Jepson 

Hitchc. 

balloon pod milkvetch 

Nuttall's peavine 

Cytisus multiflorus (L'Her.) Sweet 

Lathyrus nevadensis ssp. lanceolatus var. pilosellus (M.E. Peck) C.L. 

white spanishbroom 

Hitchc. 

Cytisus scoparius (L.) Link 


scotchbroom 

Lathyrus nevadensis ssp. lanceolatus var. puniceus C.L. Hitchc. 

Cytisus scoparius var. scoparius (L.) Link 


scotchbroom 

Lathyrus ochroleucus Hook. 

Dalea ornata (Dougl. ex Hook.) Eat. & J. Wright 

cream peavine 

Blue Mountain prairieclover 

Lathyrus palustris L. 

Genista monspessulana (L.) L. Johnson 

slenderstem peavine 

frenchbroom 

Lathyrus pauciflorus Fern. 

Glycyrrhiza lepidota Pursh 

fewflower peavine 

American licorice 

Lathyrus pauciflorus var. pauciflorus Fern. 

Hedysarum occidentale Greene 

fewflower peavine 

western sweetvetch 

Lathyrus pauciflorus var. utahensis (M.E. Jones) Piper ex M.E. Peck 

Hedysarum sulphurescens Rydb. 

Utah peavine 

white sweetvetch 

Lathyrus polyphyllus Nutt. 

Lathyrus aphaca L. 

leafy peavine 

yellow peavine 

Lathyrus pratensis L. 

Lathyrus bijugatus White 

meadow peavine 

drypark peavine 

Lathyrus sylvestris L. 

Lathyrus holochlorus (Piper) C.L. Hitchc. 

flat peavine 

thinleaf peavine 

Lathyrus tuberosus L. 

Lathyrus japonicus Willd. 

tuberous sweetpea 

sea peavine 

Lathyrus vestitus Nutt. 

Lathyrus japonicus var. maritimus (L.) Kartesz & Gandhi 

Pacific peavine 

sea peavine 

Lathyrus vestitus ssp. bolanderi (S. Wats.) C.L. Hitchc. 

Lathyrus lanszwertii Kellogg 

Bolander's peavine 

thickleaf peavine 

Lotus aboriginus Jepson 

Lathyrus lanszwertii var. aridus (Piper) Jepson 

rosy birdsfoot trefoil 

Nevada peavine 

Lotus corniculatus L. 

Lathyrus lanszwertii var. lanszwertii Kellogg 

birdfoot deervetch 

Lanszwert's peavine 

Lotus crassifolius (Benth.) Greene 

Lathyrus latifolius L. 

big deervetch 

perennial peavine 

Lotus crassifolius var. crassifolius (Benth.) Greene 

Lathyrus littoralis (Nutt.) Endl. 

big deervetch 

silky beach peavine 

Lotus denticulatus (E. Drew) Greene 

Lathyrus nevadensis S. Wats. 

riverbar birdsfoot trefoil 


Lotus formosissimus Greene 

Lathyrus nevadensis ssp. cusickii (S. Wats.) C.L. Hitchc. 

seaside birdsfoot trefoil 

Cusick's peavine 

Lotus micranthus Benth. 


desert deervetch 

Lupinus argenteus ssp. argenteus var. argenteus Pursh 

Lotus nevadensis (S. Wats.) Greene 

silvery lupine 

Nevada birdsfoot trefoil 

Lupinus argenteus ssp. argenteus var. laxiflorus (Dougl. ex Lindl.) Dorn 

Lotus nevadensis var. douglasii (Greene) Ottley 

spur lupine 

Douglas' birdsfoot trefoil 

Lupinus aridus Dougl. 

Lotus parviflorus Desf. 

desert lupine 

smallflower birdsfoot trefoil 

Lupinus aridus ssp. aridus Dougl. 

Lotus pinnatus Hook. 

desert lupine 

meadow birdsfoot trefoil 

Lupinus bicolor Lindl. 

Lotus unifoliolatus (Hook.) Benth. 

bicolor lupine 

American birdsfoot trefoil 

Lupinus bicolor ssp. bicolor Lindl. 

Lotus unifoliolatus var. unifoliolatus (Hook.) Benth. 

bicolor lupine 

prairie trefoil 

Lupinus bicolor ssp. tridentatus (Eastw. ex C.P. Sm.) D. Dunn 

Lupinus albicaulis Dougl. 

annual lupine 

sicklekeel lupine 

Lupinus bicolor ssp. tridentatus var. tridentatus Eastw. ex C.P. Sm. 

Lupinus albicaulis var. albicaulis Dougl. 

annual lupine 

sicklekeel lupine 

Lupinus bingenensis Suksdorf 

Lupinus alpicola Henderson ex Piper 

Bingen lupine 

Mt. Adams lupine 

Lupinus bingenensis var. bingenensis Suksdorf 

Lupinus arboreus Sims 

Bingen lupine 

bush lupine 

Lupinus bingenensis var. dubius C.P. Sm. 

Lupinus arboreus var. arboreus Sims 

Bingen lupine 

bush lupine 

Lupinus bingenensis var. subsaccatus Suksdorf 

Lupinus arbustus Dougl. ex Lindl. 

Bingen lupine 

longspur lupine 

Lupinus burkei S. Wats. 

Lupinus arbustus ssp. arbustus Dougl. ex Lindl. 

largeleaf lupine 


Lupinus burkei ssp. burkei S. Wats. 

Lupinus arbustus ssp. arbustus var. montanus (T.J. Howell) D. Dunn Burke's lupine 


Lupinus cusickii S. Wats. 

Lupinus arbustus ssp. calcaratus (Kellogg) D. Dunn 

Cusick's lupine 

quakerbonnet lupine 

Lupinus cusickii ssp. cusickii S. Wats. 

Lupinus arbustus ssp. neolaxiflorus D. Dunn 

Cusick's lupine 


Lupinus densiflorus Benth. 

Lupinus arbustus ssp. pseudoparviflorus (Rydb.) D. Dunn 

whitewhorl lupine 

false lupine 

Lupinus densiflorus var. densiflorus Benth. 

Lupinus arcticus S. Wats. 

whitewhorl lupine 

arctic lupine 

Lupinus garfieldensis C.P. Sm. 

Lupinus arcticus ssp. arcticus S. Wats. 

Garfield lupine 

arctic lupine 

Lupinus holosericeus Nutt. 

Lupinus arcticus ssp. subalpinus (Piper & B.L. Robins.) D. Dunn holo lupine 

subalpine lupine 

Lupinus latifolius Lindl. ex J.G. Agardh 

Lupinus argenteus Pursh 

broadleaf lupine 


Lupinus latifolius ssp. latifolius Lindl. ex J.G. Agardh 

Lupinus argenteus ssp. argenteus Pursh 

broadleaf lupine 


Lupinus lepidus Dougl. ex Lindl. 


Pacific lupine 

Lupinus prunophilus M.E. Jones 

Lupinus leucophyllus Dougl. ex Lindl. 

hairy bigleaf lupine 

velvet lupine 

Lupinus pusillus Pursh 

Lupinus leucophyllus ssp. erectus (Henderson) Harmon 

rusty lupine 

velvet lupine 

Lupinus pusillus ssp. intermontanus (Heller) D. Dunn 

Lupinus leucophyllus ssp. leucophyllus Dougl. ex Lindl. 

Intermountain lupine 

velvet lupine 

Lupinus rivularis Dougl. ex Lindl. 

Lupinus leucophyllus ssp. leucophyllus var. belliae C.P. Sm. 

riverbank lupine 

velvet lupine 

Lupinus sabinianus Dougl. ex Lindl. 

Lupinus leucophyllus ssp. leucophyllus var. canescens (T.J. Howell) Sabin's lupine 

C.P. Sm. 

Lupinus saxosus T.J. Howell 

velvet lupine 

rock lupine 

Lupinus leucophyllus ssp. leucophyllus var. leucophyllus Dougl. ex Lupinus saxosus var. saxosus T.J. Howell 

Lindl. 

stonyground lupine 

velvet lupine 

Lupinus saxosus var. subsericeus (B.L. Robins. ex Piper) C.P. Sm. 

Lupinus littoralis Dougl. 

stonyground lupine 

seashore lupine 

Lupinus sellulus Kellogg 

Lupinus lyallii Gray 

Donner Lake lupine 

dwarf mountain lupine 

Lupinus sellulus ssp. sellulus Kellogg 

Lupinus minimus Dougl. ex Hook. 


Kettle Falls lupine 

Lupinus sellulus ssp. sellulus var. lobbii (Gray ex S. Wats.) Cox 

Lupinus mollis Heller 

Lobb's lupine 

soft lupine 

Lupinus sellulus ssp. sellulus var. medius (Detling) Cox 

Lupinus odoratus Heller 


Mojave royal lupine 

Lupinus sellulus ssp. sellulus var. sellulus Kellogg 

Lupinus odoratus var. odoratus Heller 


Mojave royal lupine 

Lupinus sericeus Pursh 

Lupinus onustus S. Wats. 

silky lupine 

Plumas lupine 

Lupinus sericeus ssp. sericeus Pursh 

Lupinus oreganus Heller 

silky lupine 

Oregon lupine 

Lupinus sericeus ssp. sericeus var. egglestonianus C.P. Sm. 

Lupinus oreganus var. kincaidii C.P. Sm. 

Eggleston's silky lupine 

Kincaid's lupine 

Lupinus sericeus ssp. sericeus var. flexuosus (Lindl. ex J.G. Agardh) 

Lupinus ornatus Dougl. ex Lindl. 

C.P. Sm. 

ornate lupine 

silky lupine 

Lupinus polycarpus Greene 

Lupinus sericeus ssp. sericeus var. maximus C.P. Sm. ex Fleak & D. 

smallflower lupine 

Dunn 

Lupinus polyphyllus Lindl. 

silky lupine 

bigleaf lupine 

Lupinus sericeus ssp. sericeus var. sericeus Pursh 

Lupinus polyphyllus ssp. polyphyllus Lindl. 

silky lupine 


Lupinus subvexus C.P. Sm. 

Lupinus polyphyllus ssp. polyphyllus var. pallidipes (Heller) C.P. Sm. valley lupine 


Lupinus subvexus var. subvexus C.P. Sm. 

Lupinus polyphyllus ssp. polyphyllus var. polyphyllus Lindl. 

valley lupine 


Lupinus subvexus var. transmontanus C.P. Sm. 


valley lupine 

Oxytropis monticola Gray 

Lupinus suksdorfii B.L. Robins. 

yellowflower locoweed 

Suksdorf's lupine 

Pisum sativum L. 

Lupinus sulphureus Dougl. ex Hook. 

garden pea 

sulphur lupine 

Psoralea 

Lupinus wyethii S. Wats. 

= Psoralidium 

Wyeth's lupine 

Psoralidium lanceolatum (Pursh) Rydb. 

Lupinus wyethii ssp. tetonensis (E. Nels.) Cox & D. Dunn 

lemon scurfpea 

Teton lupine 

Robinia pseudoacacia L. 

Lupinus wyethii ssp. wyethii S. Wats. 

black locust 

Wyeth's lupine 

Rupertia physodes (Dougl. ex Hook.) J. Grimes 

Medicago arabica (L.) Huds. 

California tea 

spotted medick 

Sarothamnus scoparius (L.) Wimmer ex Koch 

Medicago lupulina L. 

= Cytisus scoparius 

black medick 

Sphaerophysa salsula (Pallas) DC. 

Medicago minima (L.) L. 

alkali swainsonpea 

burr medick 

Thermopsis gracilis T.J. Howell 

Medicago polymorpha L. 

Thermopsis gracilis var. gracilis T.J. Howell 

burclover 

Thermopsis gracilis var. ovata (B.L. Robins. ex Piper) M. Mendenhall 

Medicago sativa L. 

Thermopsis macrophylla Hook. & Arn. 

alfalfa 

California goldenbanner 

Medicago sativa ssp. sativa L. 

Thermopsis montana var. ovata (B.L. Robins. ex Piper) St. John 

alfalfa 

= Thermopsis gracilis var. ovata 

Melilotus albus Medik. 

Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Richards. 

= Melilotus officinalis 

prairie thermopsis 

Melilotus indicus (L.) All. 

Thermopsis rhombifolia var. montana (Nutt.) Isely 

annual yellow sweetclover 

mountain thermopsis 

Melilotus officinalis (L.) Lam. 

Trifolium albopurpureum Torr. & Gray 

yellow sweetclover 

rancheria clover 

Onobrychis viciifolia Scop. 

Trifolium arvense L. 

sainfoin 

rabbitfoot clover 

Ononis repens L. 

Trifolium aureum Pollich 

common restharrow 

golden clover 

Oxytropis borealis DC. 

Trifolium bifidum Gray 

Oxytropis borealis var. viscida (Nutt.) Welsh 

notchleaf clover 

Oxytropis campestris (L.) DC. 

Trifolium campestre Schreb. 

cold mountain crazyweed 

field clover 

Oxytropis campestris var. columbiana (St. John) Barneby 

Trifolium ciliolatum Benth. 

northern yellow locoweed 

foothill clover 

Oxytropis campestris var. cusickii (Greenm.) Barneby 

Trifolium cyathiferum Lindl. 

Cusick's crazyweed 

cup clover 

Oxytropis deflexa (Pallas) DC. 

Trifolium depauperatum Desv. 

hangpod crazyweed 

cowbag clover 

Oxytropis deflexa var. sericea Torr. & Gray 

Trifolium dichotomum Hook. & Arn. 

longstem hangpod crazyweed 

branched Indian clover 


Trifolium douglasii House 

plumed clover 

Douglas' clover 

Trifolium plumosum ssp. plumosum Dougl. ex Hook. 

Trifolium dubium Sibthorp 

plumed clover 

suckling clover 

Trifolium pratense L. 

Trifolium eriocephalum Nutt. 

red clover 

woollyhead clover 

Trifolium repens L. 

Trifolium eriocephalum ssp. arcuatum (Piper) J. Gillett 

white clover 


Trifolium resupinatum L. 

Trifolium eriocephalum ssp. eriocephalum Nutt. 

reversed clover 


Trifolium subterraneum L. 

Trifolium fragiferum L. 

subterranean clover 

strawberry clover 

Trifolium thompsonii Morton 

Trifolium fucatum Lindl. 

Thompson's clover 

bull clover 

Trifolium variegatum Nutt. 

Trifolium gracilentum Torr. & Gray 

whitetip clover 

pinpoint clover 

Trifolium willdenowii Spreng. 

Trifolium hybridum L. 

tomcat clover 

alsike clover 

Trifolium wormskioldii Lehm. 

Trifolium incarnatum L. 

cows clover 

crimson clover 

Ulex europaeus L. 

Trifolium latifolium (Hook.) Greene 

common gorse 

twin clover 

Vicia americana Muhl. ex Willd. 

Trifolium longipes Nutt. 

American vetch 

longstalk clover 

Vicia americana ssp. americana Muhl. ex Willd. 

Trifolium longipes ssp. caurinum (Piper) J. Gillett 

American vetch 


Vicia americana ssp. minor (Hook.) C.R. Gunn 

Trifolium longipes ssp. longipes Nutt. 

mat vetch 


Vicia cracca L. 

Trifolium longipes ssp. multipedunculatum (Kennedy) J. Gillett bird vetch 


Vicia hirsuta (L.) S.F. Gray 

Trifolium longipes ssp. oreganum (T.J. Howell) J. Gillett 

tiny vetch 

Oregon clover 

Vicia nigricans Hook. & Arn. 

Trifolium longipes ssp. reflexum (A. Nels.) J. Gillett 

black vetch 

droopflower clover 

Vicia nigricans ssp. gigantea (Hook.) Lassetter & Gunn. 

Trifolium macraei Hook. & Arn. 

giant vetch 

Chilean clover 

Vicia pannonica Crantz 

Trifolium macrocephalum (Pursh) Poir. 

Hungarian vetch 

largehead clover 

Vicia sativa L. 

Trifolium microcephalum Pursh 

common vetch 

smallhead clover 

Vicia sativa ssp. nigra (L.) Ehrh. 

Trifolium microdon Hook. & Arn. 

common vetch 

thimble clover 

Vicia sativa ssp. sativa L. 

Trifolium oliganthum Steud. 

garden vetch 

fewflower clover 

Vicia tetrasperma (L.) Schreb. 

Trifolium plumosum Dougl. ex Hook. 

lentil vetch 


Vicia tetrasperma var. tetrasperma (L.) Moench 

lentil vetch 

Vicia villosa Roth 

winter vetch 

LEMNACEAE 

Lemna minor L. 

common duckweed 

Lemna trisulca L. 

star duckweed 

Spirodela polyrrhiza (L.) Schleid. 

common duckweed 

Wolffia borealis (Engelm. ex Hegelm.) Landolt ex Landolt & Wildi 

northern watermeal 

Wolffia braziliensis Weddell 

Brazilian watermeal 

Wolffiella gladiata (Hegelm.) Hegelm. 

Florida mudmidget 

LENTIBULARIACEAE 

Pinguicula macroceras Link 

California butterwort 

Utricularia gibba L. 

humped bladderwort 

Utricularia inflata Walt. 

swollen bladderwort 

Utricularia intermedia Hayne 

flatleaf bladderwort 

Utricularia minor L. 

lesser bladderwort 

Utricularia ochroleuca R.W. Hartman 

yellowishwhite bladderwort 

LILIACEAE 

Allium acuminatum Hook. 

tapertip onion 

Allium amplectens Torr. 

narrowleaf onion 

Allium cernuum Roth 

nodding onion 

Allium columbianum (Ownbey & Mingrone) P. Peterson, Annable & 

Rieseberg 

Columbian onion 

Allium constrictum (Ownbey & Mingrone) P. Peterson, Annable & 

Rieseberg 

Grand Coulee onion 

Allium crenulatum Wieg. 

Olympic onion 

Allium dictuon St. John 

Blue Mountain onion 

Allium douglasii Hook. 

Douglas' onion 

Allium fibrillum M.E. Jones 

Blue Mountain onion 

Allium geyeri S. Wats. 

Geyer's onion 

Allium geyeri var. geyeri S. Wats. 

Geyer's onion 

Allium geyeri var. tenerum M.E. Jones 

bulbil onion 

Allium macrum S. Wats. 

rock onion 

Allium nevii S. Wats. 

Nevius' garlic 

Allium robinsonii Henderson 

Robinson's onion 

Allium schoenoprasum L. 

wild chives 

Allium schoenoprasum var. schoenoprasum L. 

wild chives 

Allium scilloides Dougl. ex S. Wats. 

fragile onion 

Allium textile A. Nels. & J.F. Macbr. 

textile onion 

Allium tolmiei (Hook.) Baker ex S. Wats. 

Tolm's onion 

Allium tolmiei var. tolmiei (Hook.) Baker ex S. Wats. 

Tolm's onion 

Allium validum S. Wats. 

Pacific onion 

Asparagus officinalis L. 

garden asparagus 

Brodiaea coronaria (Salisb.) Engl. 

harvest clusterlily 

Brodiaea coronaria ssp. coronaria (Salisb.) Engl. 

harvest clusterlily 

Calochortus apiculatus Baker 

pointedtip Mariposa lily 


Calochortus elegans Pursh 

Disporum smithii (Hook.) Piper 

northwestern Mariposa lily 

largeflower fairybells 

Calochortus elegans var. elegans Pursh 

Disporum trachycarpum (S. Wats.) Benth. & Hook. f. 

elegant Mariposa lily 

roughfruit fairybells 

Calochortus eurycarpus S. Wats. 

Erythronium grandiflorum Pursh 

white Mariposa lily 

dogtooth lily 

Calochortus longebarbatus S. Wats. 

Erythronium grandiflorum ssp. candidum Piper 

longbeard Mariposa lily 

yellow avalanchelily 

Calochortus longebarbatus var. longebarbatus S. Wats. 

Erythronium grandiflorum ssp. chrysandrum Applegate 

longbeard Mariposa lily 


Calochortus lyallii Baker 

Erythronium grandiflorum ssp. grandiflorum Pursh 

Lyall's Mariposa lily 


Calochortus macrocarpus Dougl. 

Erythronium montanum S. Wats. 

sagebrush Mariposa lily 

white avalanchelily 

Calochortus macrocarpus var. macrocarpus Dougl. 

Erythronium oregonum Applegate 

sagebrush Mariposa lily 

giant white fawnlily 

Calochortus macrocarpus var. maculosus (A. Nels. & J.F. Macbr.) A. Erythronium oregonum ssp. oregonum Applegate 

Nels. & J.F. Macbr. 

Oregon fawnlily 

Nez Perce Mariposa lily 

Erythronium revolutum Sm. 

Calochortus subalpinus Piper 

mahogany fawnlily 

subalpine Mariposa lily 

Fritillaria affinis (Schultes) Sealy 

Calochortus tolmiei Hook. & Arn. 

Fritillaria affinis var. affinis (Schultes) Sealy 

Tolmie startulip 

Fritillaria camschatcensis (L.) Ker-Gawl. 

Camassia leichtlinii (Baker) S. Wats. 

Kamchatka missionbells 

large camas 

Fritillaria pudica (Pursh) Spreng. 

Camassia leichtlinii ssp. suksdorfii (Greenm.) Gould 

yellow missionbells 

Suksdorf's large camas 

Lilium columbianum hort. ex Baker 

Camassia quamash (Pursh) Greene 

Columbian lily 

small camas 

Lloydia serotina (L.) Reichenb. 

Camassia quamash ssp. azurea (Heller) Gould 

common alplily 

small camas 

Maianthemum dilatatum (Wood) A. Nels. & J.F. Macbr. 

Camassia quamash ssp. breviflora Gould 

twoleaf false Solomon's seal 

small camas 

Maianthemum racemosum (L.) Link 

Camassia quamash ssp. maxima Gould 

feathery false Solomon's seal 

small camas 

Maianthemum racemosum ssp. amplexicaule (Nutt.) LaFrankie 

Camassia quamash ssp. quamash (Pursh) Greene 

western Solomon's seal 

small camas 

Maianthemum stellatum (L.) Link 

Clintonia uniflora (Menzies ex J.A. & J.H. Schultes) Kunth 

starry false Solomon's seal 

bride's bonnet 

Smilacina amplexicaulis Nutt. 

Dichelostemma capitatum (Benth.) Wood 

= Maianthemum racemosum ssp. amplexicaule 

bluedicks 

Smilacina racemosa var. amplexicaulis (Nutt.) S. Wats. 

Disporum hookeri (Torr.) Nichols. 

= Maianthemum racemosum ssp. amplexicaule 

drops of gold 

Smilacina stellata (L.) Desf. 

Disporum hookeri var. oreganum (S. Wats.) Q. Jones 

= Maianthemum stellatum 

Oregon drops of gold 

Stenanthium occidentale Gray 


western stenanthium 

Veratrum californicum Dur. 

Streptopus amplexifolius (L.) DC. 

California false hellebore 

claspleaf twistedstalk 

Veratrum californicum var. californicum Dur. 

Streptopus amplexifolius var. amplexifolius (L.) DC. 

California false hellebore 

American twistedstalk 

Veratrum californicum var. caudatum (Heller) C.L. Hitchc. 

Streptopus amplexifolius var. chalazatus Fassett 

cascade false hellebore 

tubercle twistedstalk 

Veratrum insolitum Jepson 

Streptopus lanceolatus (Ait.) Reveal 

Siskiyou false hellebore 

Streptopus lanceolatus var. curvipes (Vail) Reveal 

Veratrum viride Ait. 

Streptopus lanceolatus var. roseus (Michx.) Reveal 

American false hellebore 

Streptopus streptopoides (Ledeb.) Frye & Rigg 

Xerophyllum tenax (Pursh) Nutt. 

northern twistedstalk 

common beargrass 

Streptopus streptopoides ssp. streptopoides (Ledeb.) Frye & Rigg Zigadenus elegans Pursh 

small twistedstalk 

mountain deathcamas 

Streptopus streptopoides ssp. streptopoides var. brevipes (Baker) Fassett Zigadenus paniculatus (Nutt.) S. Wats. 

small twistedstalk 

foothill deathcamas 

Tofieldia glutinosa (Michx.) Pers. 

Zigadenus venenosus S. Wats. 

glutin tofieldia 

meadow deathcamas 

Tofieldia glutinosa ssp. brevistyla C.L. Hitchc. 

Zigadenus venenosus var. gramineus (Rydb.) Walsh ex M.E. Peck 

sticky tofieldia 

grassy deathcamas 

Tofieldia glutinosa ssp. occidentalis (S. Wats.) C.L. Hitchc. 

Zigadenus venenosus var. venenosus S. Wats. 

western tofieldia 

meadow deathcamas 

Trillium albidum J.D. Freeman 

giant white wakerobin 

LIMNANTHACEAE 

Trillium chloropetalum (Torr.) T.J. Howell 

giant wakerobin 

Trillium chloropetalum var. chloropetalum (Torr.) T.J. Howell 

giant wakerobin 

Floerkea proserpinacoides Willd. 

false mermaidweed 

LINACEAE 

Trillium ovatum Pursh 

Pacific trillium 

Trillium ovatum ssp. ovatum Pursh 

Pacific trillium 

Trillium parviflorum Soukup 

smallflower wakerobin 

Trillium petiolatum Pursh 

Idaho trillium 

Triteleia grandiflora Lindl. 

wild hyacinth 

Linum lewisii Pursh 

prairie flax 

Linum lewisii var. lewisii Pursh 

Lewis' flax 

Linum usitatissimum L. 

common flax 

Sclerolinon digynum (Gray) Rogers 

digynum flax 

LOASACEAE 

Triteleia grandiflora var. howellii (S. Wats.) Hoover 

Triteleia hyacinthina (Lindl.) Greene 

hyacinth brodiaea 

Triteleia hyacinthina var. hyacinthina (Lindl.) Greene 

fool's onion 

Uvularia L. 

= Streptopus 

Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr. & Gray 

whitestem blazingstar 

Mentzelia albicaulis var. albicaulis (Dougl. ex Hook.) Dougl. ex Torr. 

& Gray 

whitestem blazingstar 

Mentzelia dispersa S. Wats. 

bushy blazingstar 


Mentzelia dispersa var. compacta (A. Nels.) J.F. Macbr. 

Nevada blazingstar 

Mentzelia dispersa var. dispersa S. Wats. 


Mentzelia dispersa var. latifolia (Rydb.) J.F. Macbr. 


Mentzelia laevicaulis (Dougl. ex Hook.) Torr. & Gray 

smoothstem blazingstar 

Mentzelia laevicaulis var. laevicaulis (Dougl. ex Hook.) Torr. & Gray 


Mentzelia laevicaulis var. parviflora (Dougl. ex Hook.) C.L. Hitchc. 


LYCOPODIACEAE 

Huperzia chinensis (Christ) Czern. 

Chinese clubmoss 

Huperzia selago (L.) Bernh. ex Mart. & Schrank 

fir clubmoss 

Huperzia selago var. selago (L.) Bernh. ex Mart. & Schrank 

fir clubmoss 

Lycopodiella inundata (L.) Holub 

inundated clubmoss 

Lycopodium alpinum L. 

alpine clubmoss 

Lycopodium annotinum L. 

stiff clubmoss 

Lycopodium annotinum var. annotinum L. 

stiff clubmoss 

Lycopodium clavatum L. 

running clubmoss 

Lycopodium complanatum L. 

groundcedar 

Lycopodium dendroideum Michx. 

tree groundpine 

Lycopodium lagopus (Laestad. ex Hartm.) Zinserl. ex Kuzen 

Lycopodium obscurum L. 

rare clubmoss 

Lycopodium sitchense Rupr. 

Sitka clubmoss 

LYTHRACEAE 

Ammannia coccinea Rottb. 

valley redstem 

Ammannia robusta Heer & Regel 

grand redstem 

Lythrum hyssopifolia L. 

hyssop loosestrife 

Lythrum portula (L.) D.A. Webber 

spatulaleaf loosestrife 

Lythrum salicaria L. 

purple loosestrife 

Rotala ramosior (L.) Koehne 

lowland rotala 


MALVACEAE 

Abutilon theophrasti Medik. 

velvetleaf 

Iliamna longisepala (Torr.) Wiggins 

longsepal iliamna 

Iliamna rivularis (Dougl. ex Hook.) Greene 

streambank globemallow 

Iliamna rivularis var. rivularis (Dougl. ex Hook.) Greene 

streambank wildhollyhock 

Malva moschata L. 

musk mallow 

Malva neglecta Wallr. 

common mallow 

Malva parviflora L. 

cheeseweed mallow 

Malva rotundifolia auct. non L. 

= Malva neglecta 

Malva sylvestris L. 

high mallow 

Malvella Jaubert & Spach 

malvella 

Malvella leprosa (Ortega) Krapov. 

alkali mallow 

Sida hederacea (Dougl. ex Hook.) Torr. ex Gray 

= Malvella leprosa 

Sida leprosa (Ortega) K. Schum. 

= Malvella leprosa 

Sidalcea campestris Greene 

meadow checkermallow 

Sidalcea hendersonii S. Wats. 

Henderson's checkermallow 

Sidalcea hirtipes C.L. Hitchc. 

bristlystem checkermallow 

Sidalcea oregana (Nutt. ex Torr. & Gray) Gray 

Oregon checkermallow

Sidalcea oregana ssp. oregana (Nutt. ex Torr. & Gray) Gray 

Oregon checkermallow 

Sidalcea oregana ssp. oregana var. calva C.L. Hitchc. 


Sidalcea oregana ssp. oregana var. procera C.L. Hitchc. 


Sphaeralcea coccinea (Nutt.) Rydb. 

scarlet globemallow 

Sphaeralcea coccinea ssp. coccinea (Nutt.) Rydb. 

scarlet globemallow 

Sphaeralcea grossulariifolia (Hook. & Arn.) Rydb. 

gooseberryleaf globemallow 

Sphaeralcea grossulariifolia ssp. grossulariifolia (Hook. & Arn.) Rydb. 

gooseberryleaf globemallow 

Sphaeralcea munroana (Dougl. ex Lindl.) Spach ex Gray 

Munro's globemallow 

Sphaeralcea munroana ssp. munroana (Dougl. ex Lindl.) Spach ex Gray 

Munro's globemallow 

MARSILEACEAE 

Marsilea oligospora Goodding 

Pacific waterclover 

Marsilea vestita Hook. & Grev. 

hairy pepperwort 

Marsilea vestita ssp. vestita Hook. & Grev. 

hairy pepperwort 

MENYANTHACEAE 

Fauria crista-galli (Menzies ex Hook.) Makino 

deercabbage 

Menyanthes trifoliata L. 

common buckbean 

Nymphoides peltata (Gmel.) Kuntze 

yellow floatingheart 

MOLLUGINACEAE 

Mollugo verticillata L. 

green carpetweed 

MONOTROPACEAE 

Allotropa virgata Torr. & Gray ex Gray 

sugarstick 

Hemitomes congestum Gray 

coneplant 

Hypopitys 

= Monotropa 

Monotropa hypopithys L. 

pinesap 

Monotropa uniflora L. 

Indianpipe 

Pleuricospora fimbriolata Gray 

fringed pinesap 

Pterospora andromedea Nutt. 

woodland pinedrops 

MORACEAE 

Maclura pomifera (Raf.) Schneid. 

osageorange 

Morus alba L. 

white mulberry 

MYRICACEAE 

Myrica californica Cham. 

Pacific bayberry 

Myrica gale L. 

sweetgale 


NAJADACEAE 

Najas flexilis (Willd.) Rostk. & Schmidt 

nodding waternymph 

Najas guadalupensis (Spreng.) Magnus 

southern waternymph 

Najas guadalupensis var. guadalupensis (Spreng.) Magnus 

Guadalupe waternymph 

NYCTAGINACEAE 

Abronia latifolia Eschsch. 

coastal sand verbena 

Abronia mellifera Dougl. ex Hook. 

white sand verbena 

Abronia umbellata Lam. 

pink sand verbena

NYMPHAEACEAE 

Nuphar lutea (L.) Sm. 

yellow pondlily 

Nuphar lutea ssp. polysepala (Engelm.) E.O. Beal 

Rocky Mountain pondlily 

Nuphar polysepala Engelm. 

= Nuphar lutea ssp. polysepala 

Nymphaea odorata Ait. 

American white waterlily 

OLEACEAE 

Fraxinus latifolia Benth. 

Oregon ash 

ONAGRACEAE 

Boisduvalia 

= Epilobium 

Camissonia andina (Nutt.) Raven 

sundrops eveningprimrose 

Camissonia boothii (Dougl. ex Lehm.) Raven 

Booth's eveningprimrose 

Camissonia boothii ssp. boothii (Dougl. ex Lehm.) Raven 

Booth's suncup 

Camissonia contorta (Dougl. ex Lehm.) Kearney 

plains eveningprimrose 

Camissonia hilgardii (Greene) Raven 

Hilgard's suncup 

Camissonia minor (A. Nels.) Raven 

small eveningprimrose 

Camissonia parvula (Nutt. ex Torr. & Gray) Raven 

Lewis River suncup 

Camissonia pygmaea (Dougl. ex Lehm.) Raven 

dwarf suncup 

Camissonia subacaulis (Pursh) Raven 

diffuseflower eveningprimrose 

Camissonia tanacetifolia (Torr. & Gray) Raven 

tansyleaf eveningprimrose 

Camissonia tanacetifolia ssp. tanacetifolia (Torr. & Gray) Raven 

tansyleaf eveningprimrose 

Circaea alpina L. 

small enchanter's nightshade 

Circaea alpina ssp. alpina L. 


Circaea alpina ssp. pacifica (Aschers. & Magnus) Raven 


Clarkia amoena (Lehm.) A. Nels. & J.F. Macbr. 

farewell to spring 

Clarkia amoena ssp. caurina (Abrams ex Piper) H.F. & M.E. Lewis 

farewell to spring 

Clarkia amoena ssp. lindleyi (Dougl.) H.F. & M.E. Lewis 

Lindley's clarkia 

Clarkia gracilis (Piper) A. Nels. & J.F. Macbr. 

slender fairyfan 

Clarkia pulchella Pursh 

pinkfairies 

Clarkia purpurea (W. Curtis) A. Nels. & J.F. Macbr. 

winecup fairyfan 

Clarkia purpurea ssp. quadrivulnera (Dougl. ex Lindl.) H.F. & M.E. 

Lewis 

winecup fairyfan 

Clarkia rhomboidea Dougl. ex Hook. 

diamond fairyfan 

Epilobium anagallidifolium Lam. 

alpine willowherb 

Epilobium angustifolium L. 

fireweed 

Epilobium brachycarpum K. Presl 

autumn willowweed 

Epilobium ciliatum Raf. 

hairy willowherb 

Epilobium ciliatum ssp. ciliatum Raf. 

coast willowweed 

Epilobium ciliatum ssp. glandulosum (Lehm.) Hoch & Raven 

glandular willowweed 

Epilobium ciliatum ssp. watsonii (Barbey) Hoch & Raven 

northern willowherb 

Epilobium clavatum Trel. 

clubfruit willowherb 

Epilobium densiflorum (Lindl.) Hoch & Raven 

Epilobium foliosum (Torr. & Gray) Suksdorf 

California willowherb 

Epilobium glaberrimum Barbey 

smooth willowweed 

Epilobium glaberrimum ssp. fastigiatum (Nutt.) Hoch & Raven 


Epilobium glaberrimum ssp. glaberrimum Barbey 


Epilobium halleanum Hausskn. 


glandular willowherb 

Epilobium hirsutum L. 

codlins and cream (??) 

Epilobium hornemannii Reichenb. 

Hornemann's willowherb 

Epilobium hornemannii ssp. hornemannii Reichenb. 

Hornemann's willowherb 

Epilobium lactiflorum Hausskn. 

milkflower willowweed 

Epilobium latifolium L. 

dwarf fireweed 

Epilobium leptocarpum Hausskn. 

slenderfruit willowherb 

Epilobium leptophyllum Raf. 

bog willowherb 

Epilobium luteum Pursh 

yellow willowherb 

Epilobium minutum Lindl. ex Lehm. 

small willowweed 

Epilobium mirabile Trel. ex Piper 

Olympic Mountain willowherb 

Epilobium oregonense Hausskn. 

slimstem willowweed 

Epilobium palustre L. 

marsh willowherb 

Epilobium pygmaeum (Speg.) Hoch & Raven 

Epilobium saximontanum Hausskn. 

Rocky Mountain willowherb 

Epilobium suffruticosum Nutt. 

shrub willowherb 

Epilobium torreyi (S. Wats.) Hoch & Raven 

Gaura coccinea Nutt. ex Pursh 

scarlet beeblossom 

Gaura parviflora Dougl. ex Lehm. 

velvetweed 

Gayophytum decipiens Lewis & Szweykowski 

deceptive groundsmoke 

Gayophytum diffusum Torr. & Gray 

spreading groundsmoke 

Gayophytum diffusum ssp. diffusum Torr. & Gray 


Gayophytum diffusum ssp. parviflorum Lewis & Szweykowski 


Gayophytum heterozygum Lewis & Szweykowski 

zigzag groundsmoke 


Gayophytum humile Juss. 

dwarf groundsmoke 

Gayophytum racemosum Torr. & Gray 

blackfoot groundsmoke 

Gayophytum ramosissimum Torr. & Gray 

pinyon groundsmoke 

Ludwigia palustris (L.) Ell. 

marsh seedbox 

Oenothera cespitosa Nutt. 

tufted eveningprimrose 

Oenothera cespitosa ssp. cespitosa Nutt. 


Oenothera cespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz 


Oenothera elata Kunth 

Hooker's eveningprimrose 

Oenothera elata ssp. hirsutissima (Gray ex S. Wats.) W. Dietr. 

Hooker's eveningprimrose 

Oenothera glazioviana Micheli 

redsepal eveningprimrose 

Oenothera hookeri 

= Oenothera elata ssp. hirsutissima 

Oenothera pallida Lindl. 

pale eveningprimrose 

Oenothera pallida ssp. pallida Lindl. 

pale eveningprimrose 

Oenothera villosa Thunb. 

hairy eveningprimrose 

Oenothera villosa ssp. strigosa (Rydb.) W. Dietr. & Raven 

hairy eveningprimrose 

OPHIOGLOSSACEAE 

Botrychium lanceolatum (Gmel.) Angstr. 

lanceleaf grapefern 

Botrychium lanceolatum var. lanceolatum (Gmel.) Angstr. 

lanceleaf grapefern 

Botrychium lunaria (L.) Sw. 

common moonwort 

Botrychium minganense Victorin 

Mingan moonwort 

Botrychium montanum W.H. Wagner 

mountain moonwort 

Botrychium multifidum (Gmel.) Trev. 

leathery grapefern

Botrychium pinnatum St. John 

northern moonwort 

Botrychium simplex E. Hitchc. 

little grapefern 

Botrychium virginianum (L.) Sw. 

rattlesnake fern 

Ophioglossum pusillum Raf. 

northern adderstongue 

Ophioglossum vulgatum auct. non L. 

= Ophioglossum pusillum 

Ophioglossum vulgatum var. alaskanum (E.G. Britt.) C. Christens. 


Ophioglossum vulgatum var. pseudopodum (Blake) Farw. 


ORCHIDACEAE 

Calypso Salisb. 

calypso orchid 

Calypso bulbosa (L.) Oakes 

fairyslipper orchid 

Calypso bulbosa var. occidentalis (Holz.) Boivin 

fairyslipper orchid 

Cephalanthera austiniae (Gray) Heller 

phantom orchid 

Coeloglossum viride (L.) Hartman 

longbract frog orchid 

Coeloglossum viride var. virescens (Muhl. ex Willd.) Luer 

longbract frog orchid 

Corallorrhiza maculata (Raf.) Raf. 

summer coralroot 

Corallorrhiza mertensiana Bong. 

Pacific coralroot 

Corallorrhiza striata Lindl. 

hooded coralroot 

Corallorrhiza striata var. striata Lindl. 

hooded coralroot 

Corallorrhiza trifida Chatelain 

yellow coralroot 

Cypripedium calceolus ssp. parviflorum (Salisb.) Hulten 

= Cypripedium parviflorum 

Cypripedium fasciculatum Kellogg ex S. Wats. 

clustered lady's slipper 

Cypripedium montanum Dougl. ex Lindl. 

mountain lady's slipper 

Cypripedium parviflorum Salisb. 

lesser yellow lady's slipper 

Epipactis gigantea Dougl. ex Hook. 

giant helleborine 

Goodyera oblongifolia Raf. 

western rattlesnake plantain 

Habenaria 

= Platanthera 

Habenaria unalascensis (Spreng.) S. Wats. 

= Piperia unalascensis 

Limnorchis 

= Platanthera 

Liparis loeselii (L.) L.C. Rich. 

yellow widelip orchid 

Listera borealis Morong 

northern twayblade 

Listera caurina Piper 

northwestern twayblade 

Listera convallarioides (Sw.) Nutt. ex Ell. 

broadlipped twayblade 

Listera cordata (L.) R. Br. ex Ait. f. 

heartleaf twayblade 

Piperia elegans (Lindl.) Rydb. 

hillside bogorchid 

Piperia elongata Rydb. 

denseflower rein orchid 

Piperia elongata ssp. elongata Rydb. 

denseflower rein orchid 

Piperia unalascensis (Spreng.) Rydb. 

Alaska rein orchid 

Platanthera chorisiana (Cham.) Reichenb. 

Choriso bog orchid 

Platanthera cooperi (S. Wats.) Rydb. 

= Piperia unalascensis 

Platanthera dilatata (Pursh) Lindl. ex Beck 

boreal bog orchid 

Platanthera dilatata var. albiflora (Cham.) Ledeb. 

scentbottle 

Platanthera dilatata var. dilatata (Pursh) Lindl. ex Beck 

scentbottle 

Platanthera hyperborea (L.) Lindl. 

northern green orchid 

Platanthera hyperborea var. gracilis (Lindl.) Luer 


Platanthera hyperborea var. hyperborea (L.) Lindl. 



Platanthera hyperborea var. viridiflora (Cham.) Luer 


Platanthera leucostachys Lindl. 

bog orchid 

Platanthera obtusata (Banks ex Pursh) Lindl. 

blunt bog orchid 

Platanthera orbiculata (Pursh) Lindl. 

large roundleaved orchid 

Platanthera orbiculata var. orbiculata (Pursh) Lindl. 

large roundleaved orchid 

Platanthera sparsiflora (S. Wats.) Schlechter 

canyon bog orchid 

Platanthera sparsiflora var. sparsiflora (S. Wats.) Schlechter 

canyon bog orchid 

Platanthera stricta Lindl. 

Modoc bog orchid 

Spiranthes porrifolia Lindl. 

creamy ladiestresses 

Spiranthes romanzoffiana Cham. 

hooded ladiestresses 

OROBANCHACEAE 

Boschniakia hookeri Walp. 

Vancouver groundcone 

Orobanche californica Cham. & Schlecht. 

California broomrape 

Orobanche californica ssp. californica Cham. & Schlecht. 

California broomrape 

Orobanche californica ssp. grayana (G. Beck) Heckard 

Gray's broomrape 

Orobanche corymbosa (Rydb.) Ferris 

flattop broomrape 

Orobanche fasciculata Nutt. 

clustered broomrape 

Orobanche ludoviciana Nutt. 

Louisiana broomrape 

Orobanche ludoviciana ssp. ludoviciana Nutt. 

sand broomrape 

Orobanche minor Sm. 

hellroot 

Orobanche pinorum Geyer ex Hook. 

conifer broomrape 

Orobanche uniflora L. 

oneflowered broomrape 

OXALIDACEAE 

Oxalis corniculata L. 

creeping woodsorrel 

Oxalis dillenii Jacq. 

Dillen's oxalis 

Oxalis oregana Nutt. 

Oregon oxalis 

Oxalis stricta L. 

common yellow oxalis 

Oxalis suksdorfii Trel. 

Suksdorf woodsorrel 

Oxalis trilliifolia Hook. 

threeleaf woodsorrel 

PAEONIACEAE 

Paeonia brownii Dougl. ex Hook. 

Brown's peony 


PAPAVERACEAE 

Eschscholzia californica Cham. 

California poppy 

Eschscholzia californica ssp. californica Cham. 

California poppy 

Meconella oregana Nutt. 

white fairypoppy 

Papaver argemone L. 

long pricklyhead poppy 

Papaver somniferum L. 

opium poppy 

PINACEAE 

Abies amabilis (Dougl. ex Loud.) Dougl. ex Forbes 

Pacific silver fir 

Abies grandis (Dougl. ex D. Don) Lindl. 

grand fir 

Abies lasiocarpa (Hook.) Nutt. 

subalpine fir 

Abies lasiocarpa var. lasiocarpa (Hook.) Nutt. 

subalpine fir 

Abies procera Rehd. 

noble fir

Larix lyallii Parl. 

subalpine larch 

Larix occidentalis Nutt. 

western larch 

Picea engelmannii Parry ex Engelm. 

Engelmann's spruce 

Picea sitchensis (Bong.) Carr. 

Sitka spruce 

Pinus albicaulis Engelm. 

whitebark pine 

Pinus contorta Dougl. ex Loud. 

lodgepole pine 

Pinus contorta var. contorta Dougl. ex Loud. 

lodgepole pine 

Pinus contorta var. latifolia Engelm. ex S. Wats. 

tall lodgepole pine 

Pinus contorta var. murrayana (Grev. & Balf.) Engelm. 

Murray lodgepole pine 

Pinus monticola Dougl. ex D. Don 

western white pine 

Pinus ponderosa P.& C. Lawson 

ponderosa pine 

Pinus ponderosa var. ponderosa P.& C. Lawson 

ponderosa pine 

Pseudotsuga menziesii (Mirbel) Franco 

Douglas fir 

Pseudotsuga menziesii var. glauca (Beissn.) Franco 

Rocky Mountain Douglas fir 

Pseudotsuga menziesii var. menziesii (Mirbel) Franco 

Douglas fir 

Tsuga heterophylla (Raf.) Sarg. 

western hemlock 

Tsuga mertensiana (Bong.) Carr. 

mountain hemlock 

PLANTAGINACEAE 

Plantago aristata Michx. 

largebracted plantain 

Plantago australis Lam. 

Mexican plantain 

Plantago australis ssp. hirtella (Kunth) Rahn 

Mexican plantain 

Plantago bigelovii Gray 

annual coastal plantain 

Plantago coronopus L. 

buckhorn plantain 

Plantago elongata Pursh 

longleaf plantain 

Plantago elongata ssp. elongata Pursh 

prairie plantain 

Plantago elongata ssp. pentasperma Bassett 

prairie plantain 

Plantago lanceolata L. 

narrowleaf plantain 

Plantago macrocarpa Cham. & Schlecht. 

seashore plantain 

Plantago major L. 

common plantain 

Plantago major var. pachyphylla Pilger 

thickleaf plantain 

Plantago maritima L. 

goose tongue 

Plantago maritima var. californica (Fern.) Pilger 

California goose tongue 

Plantago maritima var. juncoides (Lam.) Gray 

goose tongue 

Plantago patagonica Jacq. 

woolly plantain 

Plantago psyllium L. 

whorled plantain 

Plantago pusilla Nutt. 

dwarf plantain 

PLUMBAGINACEAE 

Armeria maritima (P. Mill.) Willd. 

thrift seapink 

Armeria maritima ssp. californica (Boiss.) Porsild 

California seapink 

Armeria maritima ssp. purpurea (W.D.J. Koch) A.& D. Love 

sea thrift 

POLEMONIACEAE 

Collomia debilis (S. Wats.) Greene 

alpine mountaintrumpet 

Collomia debilis var. debilis (S. Wats.) Greene 


Collomia debilis var. trifida Payson 



Collomia grandiflora Dougl. ex Lindl. 

true babystars 

largeflower mountaintrumpet 

Linanthus bicolor ssp. minimus Mason 

Collomia heterophylla Dougl. ex Hook. 


variableleaf mountaintrumpet 

Linanthus bolanderi (Gray) Greene 

Collomia larsenii Gray 

Bolander's deserttrumpets 

Collomia linearis Nutt. 

Linanthus harknessii (Curran) Greene 

narrowleaf mountaintrumpet 

Harkness' flaxflower 

Collomia tenella Gray 

Linanthus harknessii ssp. harknessii (Curran) Greene 

diffuse mountaintrumpet 

Harkness' flaxflower 

Collomia tinctoria Kellogg 

Linanthus liniflorus (Benth.) Greene 

yellowstaining mountaintrumpet 

narrowflower flaxflower 

Eriastrum wilcoxii (A. Nels.) Mason 

Linanthus liniflorus ssp. pharnaceoides (Benth.) Mason 

Wilcox's woolstar 

lighthouse flaxflower 

Gilia capillaris Kellogg 

Linanthus nuttallii (Gray) Greene ex Milliken 

miniature gilia 

Nuttall's deserttrumpets 

Gilia capitata Sims 

Linanthus nuttallii ssp. nuttallii (Gray) Greene ex Milliken 

bluehead gilia 


Gilia capitata ssp. capitata Sims 

Linanthus nuttallii ssp. pubescens Patterson 



Gilia capitata ssp. chamissonis (Greene) V. Grant 

Linanthus septentrionalis Mason 


northern linanthus 

= Phlox gracilis ssp. gracilis 

Navarretia breweri (Gray) Greene 

Gilia leptomeria Gray 

Brewer's navarretia 

sand gilia 

Navarretia divaricata (Torr. ex Gray) Greene 

Gilia ochroleuca M.E. Jones 

divaricate navarretia 

volcanic gilia 

Navarretia divaricata ssp. divaricata (Torr. ex Gray) Greene 

Gilia sinuata Dougl. ex Benth. 

divaricate navarretia 

rosy gilia 

Navarretia intertexta (Benth.) Hook. 

Gilia transmontana (Mason & A. Grant) A.& V. Grant 

needleleaf navarretia 

transmontane gilia 

Navarretia intertexta ssp. intertexta (Benth.) Hook. 

Ipomopsis aggregata (Pursh) V. Grant 

needleleaf navarretia 

skyrocket gilia 

Navarretia intertexta ssp. propinqua (Suksdorf) Day 

Ipomopsis aggregata ssp. aggregata (Pursh) V. Grant 

near navarretia 

skyrocket gilia 

Navarretia leucocephala Benth. 

Ipomopsis congesta (Hook.) V. Grant 

whitehead navarretia 

ballhead gilia 

Navarretia leucocephala ssp. minima (Nutt.) Day 

Ipomopsis congesta ssp. congesta (Hook.) V. Grant 

least navarretia 

ballhead gilia 

Navarretia squarrosa (Eschsch.) Hook. & Arn. 

Ipomopsis minutiflora (Benth.) V. Grant 

skunkbush 

littleflower gilia 

Navarretia tagetina Greene 

Leptodactylon pungens (Torr.) Torr. ex Nutt. 

marigold pincushionplant 

granite pricklygilia 

Phlox colubrina Wherry & Constance 

Linanthus bicolor (Nutt.) Greene 

Snake River phlox 


Phlox diffusa Benth. 

Linanthus bicolor ssp. bicolor (Nutt.) Greene 

spreading phlox 


Phlox diffusa ssp. diffusa Benth. 

sticky phlox 


Polemonium californicum Eastw. 

Phlox diffusa ssp. longistylis Wherry 

moving polemonium 


Polemonium carneum Gray 

Phlox diffusa ssp. subcarinata Wherry 

royal Jacobsladder 


Polemonium elegans Greene 

Phlox gracilis (Hook.) Greene 

elegant Jacobsladder 

slender phlox 

Polemonium micranthum Benth. 

Phlox gracilis ssp. gracilis (Hook.) Greene 

annual polemonium 

slender phlox 

Polemonium occidentale Greene 

Phlox gracilis ssp. humilis (Greene) Mason 

western polemonium 

dwarf phlox 

Polemonium occidentale ssp. occidentale Greene 

Phlox hendersonii (E. Nels.) Cronq. 

western polemonium 

Henderson's phlox 

Polemonium pectinatum Greene 

Phlox hoodii Richards. 

Washington Jacobsladder 

spiny phlox 

Polemonium pulcherrimum Hook. 

Phlox hoodii ssp. canescens (Torr. & Gray) Wherry 

skunkleaf polemonium 

carpet phlox 

Polemonium pulcherrimum ssp. lindleyi (Wherry) V. Grant 

Phlox longifolia Nutt. 

Lindley's polemonium 

longleaf phlox 

Polemonium pulcherrimum ssp. pulcherrimum Hook. 

Phlox longifolia ssp. longifolia Nutt. 

pretty Jacobsladder 

longleaf phlox 

Polemonium viscosum Nutt. 

Phlox mollis Wherry 

sticky polemonium 

soft phlox 

Phlox rigida Benth. 

POLYGONACEAE 

stiff phlox 

Phlox speciosa Pursh 

showy phlox 

Phlox speciosa ssp. lanceolata (E. Nels.) Wherry 

showy phlox 

Phlox speciosa ssp. lignosa Brand 

showy phlox 

Phlox speciosa ssp. nitida (Suksdorf) Wherry 

showy phlox 

Phlox speciosa ssp. occidentalis (Dur. ex Torr.) Wherry 

showy phlox 

Phlox speciosa ssp. speciosa Pursh 

showy phlox 

Phlox viridis E. Nels. 

green phlox 

Phlox viridis ssp. compacta (Brand) Wherry 

green phlox 

Phlox viridis ssp. longipes (M.E. Jones) Wherry 

green phlox 

Phlox viscida E. Nels. 

Chorizanthe watsonii Torr. & Gray 

fivetooth spineflower 

Eriogonum baileyi S. Wats. 

Bailey's buckwheat 

Eriogonum baileyi var. praebens (Gandog.) Reveal 

Bailey's buckwheat 

Eriogonum compositum Dougl. ex Benth. 

arrowleaf buckwheat 

Eriogonum compositum var. compositum Dougl. ex Benth. 


Eriogonum compositum var. lancifolium St. John & Warren 


Eriogonum compositum var. leianthum Hook. 


Eriogonum douglasii Benth. 

Douglas' buckwheat 

Eriogonum douglasii var. douglasii Benth. 


Eriogonum douglasii var. sublineare (S. Stokes) Reveal 



Eriogonum elatum Dougl. ex Benth. 

Blue Mountain buckwheat 

tall woolly buckwheat 

Eriogonum strictum ssp. proliferum (Torr. & Gray) S. Stokes 

Eriogonum flavum Nutt. 


yellow eriogonum 

Eriogonum strictum ssp. proliferum var. anserinum (Greene) R.J. Davis 

Eriogonum flavum var. piperi (Greene) M.E. Jones 


Piper's golden buckwheat 

Eriogonum strictum ssp. proliferum var. glabrum C.L. Hitchc. 

Eriogonum heracleoides Nutt. 


parsnipflower buckwheat 

Eriogonum strictum ssp. proliferum var. proliferum (Torr. & Gray) 

Eriogonum heracleoides var. angustifolium (Nutt.) Torr. & Gray C.L. Hitchc. 



Eriogonum heracleoides var. heracleoides Nutt. 

Eriogonum strictum ssp. strictum Benth. 



Eriogonum heracleoides var. leucophaeum Reveal 

Eriogonum thymoides Benth. 


thymeleaf buckwheat 

Eriogonum microthecum Nutt. 

Eriogonum umbellatum Torr. 

slender buckwheat 

sulphur wildbuckwheat 

Eriogonum microthecum var. laxiflorum Hook. 

Eriogonum umbellatum var. hausknechtii (Dammer) M.E. Jones 

slender buckwheat 

Hausknecht's buckwheat 

Eriogonum niveum Dougl. ex Benth. 

Eriogonum umbellatum var. hypoleium (Piper) C.L. Hitchc. 

snow buckwheat 

sulphurflower buckwheat 

Eriogonum nudum Dougl. ex Benth. 

Eriogonum umbellatum var. majus Hook. 

naked buckwheat 


Eriogonum ovalifolium Nutt. 

Eriogonum umbellatum var. polyanthum (Benth.) M.E. Jones 

cushion buckwheat 


Eriogonum ovalifolium var. nivale (Canby) M.E. Jones 

Eriogonum umbellatum var. stellatum (Benth.) M.E. Jones 



Eriogonum ovalifolium var. purpureum (Nutt.) Dur. 

Eriogonum umbellatum var. umbellatum Torr. 



Eriogonum pyrolifolium Hook. 

Eriogonum vimineum Dougl. ex Benth. 

Shasta buckwheat 

wickerstem buckwheat 

Eriogonum pyrolifolium var. coryphaeum Torr. & Gray 

Oxyria digyna (L.) Hill 


alpine mountainsorrel 

Eriogonum pyrolifolium var. pyrolifolium Hook. 

Oxytheca dendroidea Nutt. 


narrowleaf oxytheca 

Eriogonum spergulinum Gray 

Polygonum amphibium L. 

spurry buckwheat 

water knotweed 

Eriogonum spergulinum var. reddingianum (M.E. Jones) J.T. Howell Polygonum amphibium var. emersum Michx. 

Redding buckwheat 

longroot smartweed 

Eriogonum sphaerocephalum Dougl. ex Benth. 

Polygonum amphibium var. stipulaceum Coleman 

rock buckwheat 

water smartweed 

Eriogonum sphaerocephalum var. halimioides S. Stokes 

Polygonum aviculare L. 


prostrate knotweed 

Eriogonum sphaerocephalum var. sphaerocephalum Dougl. ex Benth. Polygonum bistortoides Pursh 


American bistort 

Eriogonum strictum Benth. 

Polygonum buxiforme Small 


ox knotweed 

Polygonum phytolaccifolium Meisn. ex Small 

Polygonum californicum Meisn. 

poke knotweed 

California knotweed 

Polygonum polygaloides Wallich ex Meisn. 

Polygonum campanulatum Hook. f. 

polygala knotweed 

bellflower smartweed 

Polygonum polygaloides ssp. confertiflorum (Nutt. ex Piper) Hickman 

Polygonum convolvulus L. 

fruitleaf knotweed 

black bindweed 

Polygonum polygaloides ssp. kelloggii (Greene) Hickman 

Polygonum cuspidatum Sieb. & Zucc. 

Kellogg's knotweed 

Japanese knotweed 

Polygonum polygaloides ssp. polygaloides Wallich ex Meisn. 

Polygonum douglasii Greene 

fruitleaf knotweed 

Douglas' knotweed 

Polygonum punctatum Ell. 

Polygonum douglasii ssp. austiniae (Greene) E. Murr. 

dotted smartweed 

Austin knotweed 

Polygonum punctatum var. confertiflorum (Meisn.) Fassett 

Polygonum douglasii ssp. douglasii Greene 


Douglas' knotweed 

Polygonum punctatum var. punctatum Ell. 

Polygonum douglasii ssp. johnstonii (Munz) Hickman 


Johnston's knotweed 

Polygonum ramosissimum Michx. 

Polygonum douglasii ssp. majus (Meisn.) Hickman 

bushy knotweed 

large knotweed 

Polygonum ramosissimum var. ramosissimum Michx. 

Polygonum douglasii ssp. nuttallii (Small) Hickman 

bushy knotweed 

Nuttall's knotweed 

Polygonum sachalinense F. Schmidt ex Maxim. 

Polygonum douglasii ssp. spergulariiforme (Meisn. ex Small) Hickman giant knotweed 

scatter knotweed 

Polygonum setaceum Baldw. 

Polygonum erectum L. 

bog smartweed 

erect knotweed 

Polygonum setaceum var. setaceum Baldw. 

Polygonum fowleri B.L. Robins. 

bog smartweed 

Fowler's knotweed 

Polygonum viviparum L. 

Polygonum hydropiper L. 

alpine bistort 

marshpepper knotweed 

Rumex acetosella L. 

Polygonum hydropiperoides Michx. 

common sheep sorrel 

swamp smartweed 

Rumex aquaticus L. 

Polygonum lapathifolium L. 

western dock 

curlytop knotweed 

Rumex aquaticus var. fenestratus (Greene) Dorn 

Polygonum lapathifolium var. lapathifolium L. 

western dock 

curlytop knotweed 

Rumex conglomeratus Murr. 

Polygonum minimum S. Wats. 

clustered dock 

broadleaf knotweed 

Rumex crispus L. 

Polygonum newberryi Small 

curly dock 

Newberry's knotweed 

Rumex maritimus L. 

Polygonum paronychia Cham. & Schlecht. 

golden dock 

beach knotweed 

Rumex obtusifolius L. 

Polygonum parryi Greene 

bitter dock 

Parry's knotweed 

Rumex patientia L. 

Polygonum persicaria L. 

patience dock 

spotted ladysthumb 

Rumex paucifolius Nutt. 


fewleaved dock 

Rumex paucifolius ssp. paucifolius Nutt. 

fewleaved dock 

Rumex salicifolius Weinm. 

willow dock 

Rumex salicifolius var. angustivalvis Danser 

willow dock 

Rumex salicifolius var. mexicanus (Meisn.) C.L. Hitchc. 

Mexican dock 

Rumex salicifolius var. transitorius (Rech. f.) Hickman 

willow dock 

Rumex sanguineus L. 

redvein dock 

Rumex venosus Pursh 

veiny dock 

POLYPODIACEAE 

Polypodium amorphum Suksdorf 

irregular polypody 

Polypodium glycyrrhiza D.C. Eat. 

licorice fern 

Polypodium hesperium Maxon 

western polypody 

Polypodium scouleri Hook. & Grev. 

leathery polypody 

PONTEDERIACEAE 

Heteranthera dubia (Jacq.) MacM. 

grassleaf mudplantain 

PORTULACACEAE 

Calandrinia ciliata (Ruiz & Pavon) DC. 

fringed redmaids 

Cistanthe tweedyi (Gray) Hershkovitz 

Tweedy's pussypaws 

Cistanthe umbellata (Torr.) Hershkovitz 

Mt. Hood pussypaws 

Claytonia arenicola Henderson 

sand springbeauty 

Claytonia cordifolia S. Wats. 

heartleaf springbeauty 

Claytonia exigua Torr. & Gray 

Claytonia exigua ssp. exigua Torr. & Gray 

Claytonia lanceolata Pursh 

lanceleaf springbeauty 

Claytonia lanceolata var. chrysantha (Greene) C.L. Hitchc. 


Claytonia lanceolata var. lanceolata Pursh 


Claytonia lanceolata var. pacifica McNeill 

Pacific springbeauty 

Claytonia megarhiza (Gray) Parry ex S. Wats. 

alpine springbeauty 

Claytonia megarhiza var. nivalis (English) C.L. Hitchc. 

alpine springbeauty 

Claytonia parviflora Dougl. ex Hook. 

streambank springbeauty 

Claytonia perfoliata Donn ex Willd. 

miner's lettuce 

Claytonia perfoliata ssp. perfoliata Donn ex Willd. 


Claytonia perfoliata ssp. perfoliata var. perfoliata Donn ex Willd. 


Claytonia rubra (T.J. Howell) Tidestrom 

redstem springbeauty 

Claytonia sibirica L. 

Siberian springbeauty 

Claytonia sibirica var. bulbifera Gray 


Claytonia sibirica var. sibirica L. 


Claytonia spathulata Dougl. ex Hook. 

pale springbeauty 

Claytonia spathulata var. spathulata Dougl. ex Hook. 

pale springbeauty 

Lewisia columbiana (T.J. Howell ex Gray) B.L. Robins. 

Columbian bitterroot 

Lewisia columbiana var. columbiana (T.J. Howell ex Gray) B.L. 

Robins. 


Lewisia columbiana var. rupicola (English) C.L. Hitchc. 


Lewisia nevadensis (Gray) B.L. Robins. 

Nevada bitterroot 

Lewisia pygmaea (Gray) B.L. Robins. 

pigmy bitterroot 

Lewisia rediviva Pursh 

Oregon bitterroot 


Lewisia rediviva var. rediviva Pursh 

Oregon bitterroot 

Lewisia triphylla (S. Wats.) B.L. Robins. 

threeleaf lewisia 

Montia chamissoi (Ledeb. ex Spreng.) Greene 

water minerslettuce 

Montia dichotoma (Nutt.) T.J. Howell 

dwarf minerslettuce 

Montia diffusa (Nutt.) Greene 

spreading minerslettuce 

Montia fontana L. 

annual water minerslettuce 

Montia fontana ssp. fontana L. 

annual water minerslettuce 

Montia howellii S. Wats. 

Howell's minerslettuce 

Montia linearis (Dougl. ex Hook.) Greene 

narrowleaf minerslettuce 

Montia parvifolia (Moc. ex DC.) Greene 

littleleaf minerslettuce 

Montia parvifolia ssp. flagellaris (Bong.) Ferris 


Montia parvifolia ssp. parvifolia (Moc. ex DC.) Greene 


Montia perfoliata (Donn ex Willd.) T.J. Howell 

= Claytonia perfoliata ssp. perfoliata 

Portulaca oleracea L. 

little hogweed 

Talinum sediforme Poelln. 

Okanogan fameflower 

Talinum spinescens Torr. 

spiny fameflower 

POTAMOGETONACEAE 

Potamogeton alpinus Balbis 

alpine pondweed 

Potamogeton amplifolius Tuckerman 

largeleaf pondweed 

Potamogeton crispus L. 

curly pondweed 

Potamogeton epihydrus Raf. 

ribbonleaf pondweed 

Potamogeton filiformis Pers. 

fineleaf pondweed 


Potamogeton foliosus Raf. 

leafy pondweed 

Potamogeton foliosus var. fibrillosus (Fern.) Haynes & Reveal 


Potamogeton foliosus var. foliosus Raf. 


Potamogeton friesii Rupr. 

Fries' pondweed 

Potamogeton gramineus L. 

variableleaf pondweed 

Potamogeton illinoensis Morong 

Illinois pondweed 

Potamogeton natans L. 

floating pondweed 

Potamogeton nodosus Poir. 

longleaf pondweed 

Potamogeton obtusifolius Mert. & Koch 

bluntleaf pondweed 

Potamogeton pectinatus L. 

sago pondweed 

Potamogeton praelongus Wulfen 

whitestem pondweed 

Potamogeton pusillus L. 

small pondweed 

Potamogeton pusillus var. pusillus L. 


Potamogeton pusillus var. tenuissimus Mert. & Koch 


Potamogeton richardsonii (Benn.) Rydb. 

Richardson's pondweed 

Potamogeton robbinsii Oakes 

Robbins' pondweed 

Potamogeton vaginatus Turcz. 

sheathed pondweed 

Potamogeton zosteriformis Fern. 

flatstem pondweed 

PRIMULACEAE 

Anagallis arvensis L. 

scarlet pimpernel 

Anagallis minima (L.) Krause 

chaffweed 

Androsace filiformis Retz. 

filiform rockjasmine

Androsace septentrionalis L. 

sea milkwort 

pygmyflower rockjasmine 

Lysimachia ciliata L. 

Dodecatheon conjugens Greene 

fringed loosestrife 

Bonneville shootingstar 

Lysimachia hybrida Michx. 

Dodecatheon conjugens ssp. viscidum (Piper) H.J. Thompson lowland yellow loosestrife 


Lysimachia nummularia L. 

Dodecatheon conjugens var. conjugens Greene 

creeping jenny 


Lysimachia punctata L. 

Dodecatheon dentatum Hook. 

large yellow loosestrife 

white shootingstar 

Lysimachia terrestris (L.) B.S.P. 

Dodecatheon hendersonii Gray 

earth loosestrife 

mosquito bills 

Lysimachia thyrsiflora L. 

Dodecatheon hendersonii ssp. hendersonii Gray 

tufted loosestrife 

Henderson's shootingstar 

Samolus valerandi L. 

Dodecatheon jeffreyi Van Houtte 

seaside brookweed 

tall mountain shootingstar 

Samolus valerandi ssp. parviflorus (Raf.) Hulten 

Dodecatheon jeffreyi ssp. jeffreyi Van Houtte 

seaside brookweed 

Jeffrey's shootingstar 

Trientalis borealis Raf. 

Dodecatheon meadia L. 

American starflower 

pride of Ohio 

Trientalis borealis ssp. latifolia (Hook.) Hulten 

Dodecatheon meadia ssp. meadia L. 

broadleaf starflower 

pride of Ohio 

Trientalis europaea L. 

Dodecatheon poeticum Henderson 

arctic starflower 

poet's shootingstar 

Trientalis europaea ssp. arctica (Fisch. ex Hook.) Hulten 

Dodecatheon pulchellum (Raf.) Merr. 

arctic starflower 

darkthroat shootingstar 

Dodecatheon pulchellum ssp. cusickii (Greene) Calder & Taylor PTERIDACEAE 

Cusick's shootingstar 

Dodecatheon pulchellum ssp. macrocarpum (Gray) Taylor & MacBryde 


Dodecatheon pulchellum ssp. pulchellum (Raf.) Merr. 


Douglasia laevigata Gray 

cliff dwarfprimrose 

Douglasia laevigata var. ciliolata Constance 


Douglasia laevigata var. laevigata Gray 


Douglasia nivalis Lindl. 

snow dwarfprimrose 

Douglasia nivalis var. dentata (S. Wats.) Gray 


Douglasia nivalis var. nivalis Lindl. 


Glaux maritima L. 

Adiantum aleuticum (Rupr.) Paris 

Aleutian maidenhair 

Adiantum pedatum 

= Adiantum aleuticum 

Aspidotis densa (Brack.) Lellinger 

Indian's dream 

Cheilanthes feei T. Moore 

slender lipfern 

Cheilanthes gracillima D.C. Eat. 

lace lipfern 

Cheilanthes lanosa (Michx.) D.C. Eat. 

hairy lipfern 

Cryptogramma R. Br. 

rockbrake 

Cryptogramma acrostichoides R. Br. 

American rockbrake 

Cryptogramma stelleri (Gmel.) Prantl 

fragile rockbrake 


Pellaea brachyptera (T. Moore) Baker 

Sierran cliffbrake 

Pellaea breweri D.C. Eat. 

Brewer's cliffbrake 

Pellaea glabella Mett. ex Kuhn 

dwarf cliffbrake 

Pellaea glabella ssp. occidentalis (E. Nels.) Windham 

western dwarf cliffbrake 

Pellaea glabella ssp. simplex (Butters) A.& D. Love 

smooth cliffbrake 

Pentagrama Yatskievych, Windham & Wollenweber 

gold fern 

Pentagrama triangularis (Kaulfuss) Yatskievych, Windham & 

Wollenweber 

western goldfern 

Pentagrama triangularis ssp. triangularis (Kaulfuss) Yatskievych, 

Windham & Wollenweber 

western goldfern 

RANUNCULACEAE 

Aconitum columbianum Nutt. 

Columbian monkshood 

Aconitum columbianum ssp. columbianum Nutt. 

Aconitum columbianum var. columbianum Nutt. 

Columbian monkshood 

Actaea arguta Nutt. 

= Actaea rubra ssp. arguta 

Actaea rubra (Ait.) Willd. 

red baneberry 

Actaea rubra ssp. arguta (Nutt.) Hulten 

red baneberry 

Adonis annua L. 

blooddrops 

Anemone deltoidea Hook. 

Columbian windflower 

Anemone drummondii S. Wats. 

Drummond's anemone 

Anemone drummondii ssp. drummondii S. Wats. 

Drummond's anemone 

Anemone ludoviciana Nutt. 

= Pulsatilla patens ssp. multifida 

Anemone lyallii Britt. 

Little Mountain thimbleweed 

Anemone multifida (Pritz.) Zamels, non Poir. 


Anemone multifida Poir. 

Pacific anemone 

Anemone multifida var. hirsuta C.L. Hitchc. 


Anemone multifida var. hudsoniana DC. 

Hudson's anemone 

Anemone multifida var. multifida Poir. 


Anemone nuttalliana DC. 


Anemone occidentalis S. Wats. 

= Pulsatilla occidentalis 

Anemone oregana Gray 

blue windflower 

Anemone oregana var. felix (M.E. Peck) C.L. Hitchc. 

Felix anemone 

Anemone oregana var. oregana Gray 

blue windflower 

Anemone parviflora Michx. 

smallflowered anemone 

Anemone patens var. multifida Pritz. 


Anemone patens var. nuttalliana (DC.) Gray 


Anemone patens var. wolfgangiana (Bess. ex Richards) Trauvtr. & Mey 

ex F. Kurtz 


Anemone piperi Britt. ex Rydb. 

Piper's anemone 

Aquilegia flavescens S. Wats. 

yellow columbine 

Aquilegia formosa Fisch. ex DC. 

western columbine 

Aquilegia formosa var. formosa Fisch. ex DC. 

crimson columbine 

Aquilegia formosa var. wawawensis (Payson) St. John 

Wawaw columbine 

Caltha biflora DC. 

= Caltha leptosepala ssp. howellii 

Caltha leptosepala DC. 

white marshmarigold 

Caltha leptosepala ssp. howellii (Huth) P.G. Sm. 

Howell's marshmarigold 

Caltha leptosepala ssp. leptosepala DC. 



Delphinium glareosum Greene 

Caltha leptosepala ssp. leptosepala var. leptosepala DC. 

Olympic larkspur 


Delphinium glareosum ssp. caprorum (Ewan) Ewan 

Ceratocephala testiculata (Crantz) Bess. 


curveseed butterwort 

Delphinium glareosum ssp. glareosum Greene 

Cimicifuga elata Nutt. 


tall bugbane 

Delphinium glaucum S. Wats. 

Cimicifuga laciniata S. Wats. 

Sierra larkspur 

Mt. Hood bugbane 

Delphinium menziesii DC. 

Clematis columbiana (Nutt.) Torr. & Gray 

Menzies' larkspur 

rock clematis 

Delphinium menziesii ssp. menziesii DC. 

Clematis columbiana var. columbiana (Nutt.) Torr. & Gray 

Menzies' larkspur 

rock clematis 

Delphinium multiplex (Ewan) C.L. Hitchc. 

Clematis hirsutissima Pursh 

kittitas larkspur 

hairy clematis 

Delphinium nuttallianum Pritz. ex Walp. 

Clematis ligusticifolia Nutt. 

Nuttal's larkspur 

western white clematis 

Delphinium nuttallianum var. fulvum C.L. Hitchc. 

Clematis ligusticifolia var. brevifolia Nutt. 

yellow larkspur 


Delphinium nuttallianum var. lineapetalum (Ewan) C.L. Hitchc. 

Clematis ligusticifolia var. ligusticifolia Nutt. 



Delphinium nuttallianum var. nuttallianum Pritz. ex Walp. 

Clematis occidentalis (Hornem.) DC. 


western blue virginsbower 

Delphinium nuttallii Gray 

Clematis occidentalis var. dissecta (C.L. Hitchc.) J. Pringle 

Nuttall's larkspur 

western blue virginsbower 

Delphinium nuttallii ssp. ochroleucum (Nutt.) Warnock 

Clematis pseudoalpina (Kuntze) A. Nels. 

Delphinium occidentale ssp. occidentale (S. Wats.) S. Wats. 

= Clematis columbiana var. columbiana 

duncecap larkspur 

Clematis vitalba L. 

Delphinium stachydeum (Gray) Tidestrom 

evergreen clematis 

Rocky Mountain larkspur 

Consolida ajacis (L.) Schur 

Delphinium trolliifolium Gray 

doubtful knight's spur 

Columbian larkspur 

Coptis aspleniifolia Salisb. 

Delphinium viridescens Leib. 

fernleaf goldthread 

Wenatchee larkspur 

Coptis laciniata Gray 

Delphinium xantholeucum Piper 

Oregon goldthread 

yellow white larkspur 

Coptis occidentalis (Nutt.) Torr. & Gray 

Enemion hallii (Gray) Drumm. & Hutchinson 

Idaho goldthread 

Willamette false rue anemone 

Delphinium X burkei Greene 

Kumlienia cooleyae (Vasey & Rose) Greene 

Burk larkspur 

Cooley's buttercup 

Delphinium X occidentale (S. Wats.) S. Wats. 

Myosurus aristatus Benth. 

duncecap larkspur 

bristle mousetail 

Delphinium bicolor Nutt. 

Myosurus minimus ssp. major (Greene) Campbell 

little larkspur 

tiny mousetail 

Delphinium depauperatum Nutt. 

Myosurus minimus ssp. major var. major (Greene) K.C. Davis 

slim larkspur 



Myosurus minimus ssp. minimus L. 

alkali buttercup 


Ranunculus cymbalaria var. saximontanus Fern. 

Myosurus minumus L. 

Rocky Mountain buttercup 


Ranunculus eschscholtzii Schlecht. 

Pulsatilla hirsutissima (Pursh) Britt. 

Eschscholtz's buttercup 


Ranunculus eschscholtzii var. eschscholtzii Schlecht. 

Pulsatilla ludoviciana Heller 

Eschscholtz's buttercup 


Ranunculus ficaria L. 

Pulsatilla nuttalliana (DC.) Spreng. 

fig buttercup 


Ranunculus flabellaris Raf. 

Pulsatilla occidentalis (S. Wats.) Freyn 

yellow water buttercup 

white pasqueflower 

Ranunculus flammula L. 

Pulsatilla patens (L.) P. Mill. 

spearwort buttercup 

American pasqueflower 

Ranunculus flammula var. filiformis (Michx.) Hook. 

Pulsatilla patens ssp. hirsutissima (Pursh) Zamels 

flam buttercup 


Ranunculus flammula var. flammula L. 

Pulsatilla patens ssp. multifida (Pritz.) Zamels 

flam buttercup 

cutleaf anemone 

Ranunculus glaberrimus Hook. 

Ranunculus abortivus L. 

sagebrush buttercup 

littleleaf buttercup 

Ranunculus glaberrimus var. ellipticus (Greene) Greene 

Ranunculus abortivus var. abortivus L. 

elliptical buttercup 

littleleaf buttercup 

Ranunculus glaberrimus var. glaberrimus Hook. 

Ranunculus acris L. 


tall buttercup 

Ranunculus glaberrimus var. reconditus L. Benson 

Ranunculus acris var. acris L. 


showy buttercup 

Ranunculus gmelinii DC. 

Ranunculus alismifolius Geyer ex Benth. 

Gmelin's buttercup 

plantainleaf buttercup 

Ranunculus gmelinii var. limosus (Nutt.) Hara 

Ranunculus alismifolius var. alismellus Gray 

Gmelin's buttercup 


Ranunculus gmelinii var. purshii (Richards.) Hara 

Ranunculus alismifolius var. alismifolius Geyer ex Benth. 

Pursh's buttercup 


Ranunculus hebecarpus Hook. & Arn. 

Ranunculus aquatilis L. 

delicate buttercup 

whitewater crowfoot 

Ranunculus inamoenus Greene 

Ranunculus arvensis L. 

graceful buttercup 

corn buttercup 

Ranunculus inamoenus var. alpeophilus (A. Nels.) L. Benson 

Ranunculus bulbosus L. 


St. Anthony's turnip 

Ranunculus inamoenus var. inamoenus Greene 

Ranunculus californicus Benth. 


California buttercup 

Ranunculus longirostris Godr. 

Ranunculus cardiophyllus Hook. 

longbeak buttercup 

heartleaf buttercup 

Ranunculus macounii Britt. 

Ranunculus cymbalaria Pursh 

Macoun's buttercup 

alkali buttercup 

Ranunculus muricatus L. 

Ranunculus cymbalaria var. cymbalaria Pursh 

spinyfruit buttercup 


Ranunculus occidentalis Nutt. 

western buttercup 

Ranunculus occidentalis var. occidentalis Nutt. 

western buttercup 

Ranunculus orthorhynchus Hook. 

straightbeak buttercup 

Ranunculus orthorhynchus var. orthorhynchus Hook. 

straightbeak buttercup 

Ranunculus pensylvanicus L. f. 

Pennsylvania buttercup 

Ranunculus populago Greene 

popular buttercup 

Ranunculus recurvatus Poir. 

blisterwort 

Ranunculus repens L. 

creeping buttercup 

Ranunculus repens var. degeneratus Schur 


Ranunculus repens var. glabratus DC. 


Ranunculus repens var. repens L. 


Ranunculus sceleratus L. 

celeryleaf buttercup 

Ranunculus sceleratus var. multifidus Nutt. 

blister buttercup 

Ranunculus sceleratus var. sceleratus L. 

cursed buttercup 

Ranunculus suksdorfii Gray 

Suksdorf's buttercup 

Ranunculus trichophyllus Chaix 

whitewater crowfoot 

Ranunculus trichophyllus var. trichophyllus Chaix 

hairleaf water buttercup 

Ranunculus uncinatus D. Don ex G. Don 

hooked buttercup 

Ranunculus uncinatus var. parviflorus (Torr.) L. Benson 

common Idaho buttercup 

Ranunculus uncinatus var. uncinatus D. Don ex G. Don 

woodland buttercup 

Ranunculus verecundus B.L. Robins. ex Piper 

wetslope buttercup 

Thalictrum dasycarpum Fisch. & Ave-Lall. 

purple meadowrue 

Thalictrum fendleri Engelm. ex Gray 


Fendler's meadowrue 

Thalictrum occidentale Gray 

western meadowrue 

Thalictrum occidentale var. occidentale Gray 

western meadowrue 

Thalictrum sparsiflorum Turcz. ex Fisch. & C.A. Mey. 

fewflower meadowrue 

Thalictrum venulosum Trel. 

veiny meadowrue 

Trautvetteria caroliniensis (Walt.) Vail 

Carolina bugbane 

Trollius laxus Salisb. 

American globeflower 

Trollius laxus ssp. albiflorus (Gray) A.& D. Love & Kapoor 

American globeflower 

RHAMNACEAE 

Ceanothus integerrimus Hook. & Arn. 

deerbrush 

Ceanothus prostratus Benth. 

squawcarpet 

Ceanothus prostratus ssp. prostratus Benth. 

squawcarpet 

Ceanothus sanguineus Pursh 

redstem ceanothus 

Ceanothus velutinus Dougl. ex Hook. 

snowbrush ceanothus 

Ceanothus velutinus ssp. hookeri (M.C. Johnston) C. Schmidt 

Hooker's ceanothus 

Ceanothus velutinus ssp. velutinus Dougl. ex Hook. 

tobacco brush 

Frangula purshiana (DC.) Cooper 

Pursh's buckthorn 

Rhamnus alnifolia L'Her. 

alderleaf buckthorn 

Rhamnus purshiana DC. 

= Frangula purshiana 

ROSACEAE 

Agrimonia gryposepala Wallr. 

tall hairy agrimony 

Alchemilla 

= Aphanes

Amelanchier alnifolia (Nutt.) Nutt. ex M. Roemer 

Drummond's dryad 

Saskatoon serviceberry 

Dryas octopetala L. 

Amelanchier alnifolia var. alnifolia (Nutt.) Nutt. ex M. Roemer white dryad 


Dryas octopetala ssp. hookeriana (Juz.) Hulten 

Amelanchier alnifolia var. cusickii (Fern.) C.L. Hitchc. 

Hooker's mountainavens 

Cusick's serviceberry 

Duchesnea indica (Andr.) Focke 

Amelanchier alnifolia var. humptulipensis (G.N. Jones) C.L. Hitchc. Indian strawberry 


Filipendula occidentalis (S. Wats.) T.J. Howell 

Amelanchier alnifolia var. semiintegrifolia (Hook.) C.L. Hitchc. meadowsweet 

Pacific serviceberry 

Fragaria X ananassa Duchesne (pro sp.) 

Amelanchier pallida Greene 

hybrid strawberry 

pale serviceberry 

Fragaria X ananassa var. ananassa Duchesne (pro sp.) 

Amelanchier pumila (Torr. & Gray) Nutt. ex M. Roemer 


dwarf serviceberry 

Fragaria X ananassa var. cuneifolia (Nutt. ex T.J. Howell) Staudt 

Amelanchier utahensis Koehne 

(pro nm.) 

Utah serviceberry 


Amelanchier utahensis ssp. utahensis Koehne 

Fragaria chiloensis (L.) P. Mill. 

Utah serviceberry 

beach strawberry 

Aphanes arvensis L. 

Fragaria crinita Rydb. 

field parsley piert 

Pacific strawberry 

Argentina anserina (L.) Rydb. 

Fragaria vesca L. 

silverweed cinquefoil 

woodland strawberry 

Argentina egedii (Wormsk.) Rydb. 

Fragaria vesca ssp. bracteata (Heller) Staudt 

Pacific silverweed 

woodland strawberry 

Argentina egedii ssp. egedii (Wormsk.) Rydb. 

Fragaria virginiana Duchesne 

Eged's Pacific silverweed 

Virginia strawberry 

Aruncus dioicus (Walt.) Fern. 

Fragaria virginiana ssp. platypetala (Rydb.) Staudt 

bride's feathers 

Virginia strawberry 

Aruncus dioicus var. vulgaris (Maxim.) Hara 

Geum aleppicum Jacq. 

bride's feathers 

yellow avens 

Cercocarpus ledifolius Nutt. 

Geum macrophyllum Willd. 

curlleaf mountain mahogany 

largeleaf avens 

Cercocarpus ledifolius var. intercedens Schneid. 

Geum macrophyllum var. macrophyllum Willd. 



Cercocarpus ledifolius var. ledifolius Nutt. 

Geum macrophyllum var. perincisum (Rydb.) Raup 



Comarum palustre L. 

Geum rivale L. 

purple marshlocks 

purple avens 

Crataegus columbiana T.J. Howell 

Geum rossii (R. Br.) Ser. 

= Crataegus douglasii var. douglasii 

Ross' avens 

Crataegus douglasii Lindl. 

Geum rossii var. depressum (Greene) C.L. Hitchc. 

black hawthorn 

Ross' avens 

Crataegus douglasii var. douglasii Lindl. 

Geum triflorum Pursh 

Douglas' hawthorn 

prairiesmoke 

Dryas drummondii Richards. ex Hook. 

Geum triflorum var. campanulatum (Greene) C.L. Hitchc. 


old man's whiskers 

Potentilla biennis Greene 

Geum triflorum var. ciliatum (Pursh) Fassett 

biennial cinquefoil 

old man's whiskers 

Potentilla diversifolia Lehm. 

Holodiscus discolor (Pursh) Maxim. 

varileaf cinquefoil 

oceanspray 

Potentilla diversifolia var. diversifolia Lehm. 

Horkelia fusca Lindl. 

varileaf cinquefoil 

tawny horkelia 

Potentilla diversifolia var. perdissecta (Rydb.) C.L. Hitchc. 

Horkelia fusca ssp. capitata (Lindl.) Keck 

mountainmeadow cinquefoil 

bighead horkelia 

Potentilla drummondii Lehm. 

Horkelia fusca ssp. fusca Lindl. 

Drummond's cinquefoil 

pinewoods honeydew 

Potentilla drummondii ssp. breweri (S. Wats.) Ertter 

Horkelia fusca ssp. parviflora (Nutt. ex Torr. & Gray) Keck 

Potentilla egedii Wormsk. 

smallflower horkelia 

= Argentina egedii ssp. egedii 

Ivesia gordonii (Hook.) Torr. & Gray 

Potentilla flabellifolia Hook. ex Torr. & Gray 

Gordon's ivesia 

high mountain cinquefoil 

Ivesia tweedyi Rydb. 

Potentilla fruticosa auct. non L. 

Tweedy's ivesia 

= Pentaphylloides floribunda 

Luetkea pectinata (Pursh) Kuntze 

Potentilla glandulosa Lindl. 

partridgefoot 

gland cinquefoil 

Malus fusca (Raf.) Schneid. 

Potentilla glandulosa ssp. glabrata (Rydb.) Keck 

Oregon crabapple 

sticky cinquefoil 

Malus sylvestris P. Mill. 

Potentilla glandulosa ssp. glandulosa Lindl. 

apple 


Oemleria cerasiformis (Torr. & Gray ex Hook. & Arn.) Landon Potentilla glandulosa ssp. pseudorupestris (Rydb.) Keck 

Indian plum 


Pentaphylloides floribunda (Pursh) A. Love 

Potentilla gracilis Dougl. ex Hook. 

shrubby cinquefoil 

northwest cinquefoil 

Petrophyton cinerascens (Piper) Rydb. 

Potentilla gracilis var. brunnescens (Rydb.) C.L. Hitchc. 

halfshrub rockmat 

brownfuz cinquefoil 

Petrophyton hendersonii (Canby) Rydb. 

Potentilla gracilis var. fastigiata (Nutt.) S. Wats. 

Olympic Mountain rockmat 

Potentilla gracilis var. flabelliformis (Lehm.) Nutt. ex Torr. & Gray 

Physocarpus capitatus (Pursh) Kuntze 

Potentilla gracilis var. gracilis Dougl. ex Hook. 

Pacific ninebark 

graceful cinquefoil 

Physocarpus malvaceus (Greene) Kuntze 

Potentilla nana Willd. ex Schlecht. 

mallow ninebark 

arctic cinquefoil 

Potentilla anserina L. 

Potentilla newberryi Gray 

= Argentina anserina 

Newberry's cinquefoil 

Potentilla argentea L. 

Potentilla nivea L. 

silver cinquefoil 

snow cinquefoil 

Potentilla argentea var. argentea L. 

Potentilla nivea var. nivea L. 

silver cinquefoil 

snow cinquefoil 

Potentilla arguta Pursh 

Potentilla nivea var. pentaphylla Lehm. 

tall cinquefoil 

fiveleaf cinquefoil 

Potentilla arguta ssp. convallaria (Rydb.) Keck 

Potentilla norvegica L. 

cream cinquefoil 

Norwegian cinquefoil 


Potentilla norvegica ssp. hirsuta (Michx.) Hyl. 

= Prunus virginiana var. melanocarpa 


Prunus spinosa L. 

Potentilla norvegica ssp. monspeliensis (L.) Aschers. & Graebn. blackthorn 


Prunus virginiana L. 

Potentilla pacifica T.J. Howell 

common chokecherry 

= Argentina egedii ssp. egedii 

Prunus virginiana var. demissa (Nutt.) Torr. 

Potentilla palustris (L.) Scop. 

western chokecherry 

= Comarum palustre 

Prunus virginiana var. melanocarpa (A. Nels.) Sarg. 

Potentilla paradoxa Nutt. 

black chokecherry 

Paradox cinquefoil 

Purshia tridentata (Pursh) DC. 

Potentilla pectinisecta Rydb. 

antelope bitterbrush 

combleaf cinquefoil 

Pyrus communis L. 

Potentilla pensylvanica L. 

common pear 

Pennsylvania cinquefoil 

Rosa canina L. 

Potentilla pensylvanica var. strigosa Pallas ex Pursh 

dog rose 

Pennsylvania cinquefoil 

Rosa eglanteria L. 

Potentilla pulcherrima Lehm. 

sweetbriar rose 

beautiful cinquefoil 

Rosa gymnocarpa Nutt. 

Potentilla recta L. 

dwarf rose 

sulphur cinquefoil 

Rosa gymnocarpa var. gymnocarpa Nutt. 

Potentilla rivalis Nutt. 

wood rose 

brook cinquefoil 

Rosa multiflora Thunb. ex Murr. 

Potentilla rivalis var. millegrana (Engelm. ex Lehm.) S. Wats. multiflora rose 


Rosa nutkana K. Presl 

Potentilla rivalis var. rivalis Nutt. 

Nootka rose 


Rosa nutkana var. hispida Fern. 

Potentilla uniflora Ledeb. 

bristly Nootka rose 

oneflower cinquefoil 

Rosa nutkana var. muriculata (Greene) G.N. Jones 

Potentilla villosa Pallas ex Pursh 

Nootka rose 

villous cinquefoil 

Rosa nutkana var. nutkana K. Presl 

Prunus avium (L.) L. 

Nootka rose 

sweet cherry 

Rosa nutkana var. setosa G.N. Jones 

Prunus cerasus L. 

Nootka rose 

sour cherry 

Rosa pisocarpa Gray 

Prunus domestica L. 

cluster rose 

European plum 

Rosa rugosa Thunb. 

Prunus emarginata (Dougl. ex Hook.) Walp. 

rugosa rose 

bitter cherry 

Rosa woodsii Lindl. 

Prunus emarginata var. emarginata (Dougl. ex Hook.) Walp. 

Woods' rose 

bitter cherry 

Rosa woodsii var. ultramontana (S. Wats.) Jepson 

Prunus emarginata var. mollis (Dougl. ex Hook.) Brewer 

Woods' rose 

bitter cherry 

Rubus arcticus L. 

Prunus mahaleb L. 

arctic blackberry 

Mahaleb cherry 

Rubus arcticus ssp. acaulis (Michx.) Focke 

Prunus melanocarpa (A. Nels.) Rydb. 

dwarf raspberry 


Rubus discolor Weihe & Nees 

Himalayan blackberry 

Rubus idaeus L. 

American red raspberry 

Rubus idaeus ssp. idaeus L. 

common red raspberry 

Rubus idaeus ssp. strigosus (Michx.) Focke 

grayleaf red raspberry 

Rubus laciniatus Willd. 

cutleaf blackberry 

Rubus lasiococcus Gray 

roughfruit berry 

Rubus leucodermis Dougl. ex Torr. & Gray 

whitebark raspberry 

Rubus leucodermis var. leucodermis Dougl. ex Torr. & Gray 

whitebark raspberry 

Rubus macrophyllus Weihe & Nees 

largeleaf blackberry 

Rubus nigerrimus (Greene) Rydb. 

dark raspberry 

Rubus nivalis Dougl. ex Hook. 

snow raspberry 

Rubus parviflorus Nutt. 

thimbleberry 

Rubus parviflorus var. parviflorus Nutt. 

western thimbleberry 

Rubus pedatus Sm. 

strawberryleaf raspberry 

Rubus pubescens Raf. 

dwarf red blackberry 

Rubus spectabilis Pursh 

salmonberry 

Rubus strigosus Michx. 

= Rubus idaeus ssp. strigosus 

Rubus ursinus Cham. & Schlecht. 

California blackberry 

Rubus ursinus ssp. macropetalus (Dougl. ex Hook.) Taylor & 

MacBryde 

California blackberry 

Rubus vestitus Weihe & Nees 

European blackberry 

Sanguisorba menziesii Rydb. 

Menzies' burnet 

Sanguisorba minor Scop. 

small burnet 


Sanguisorba occidentalis Nutt. 

western burnet 

Sanguisorba officinalis L. 

official burnet 

Sibbaldia procumbens L. 

creeping sibbaldia 

Sorbaria arborea Schneid. 

sorbaria 

Sorbus aucuparia L. 

European mountainash 

Sorbus scopulina Greene 

Greene mountainash 

Sorbus scopulina var. cascadensis (G.N. Jones) C.L. Hitchc. 

Cascade mountainash 

Sorbus scopulina var. scopulina Greene 

Cascade mountainash 

Sorbus sitchensis M. Roemer 

western mountainash 

Sorbus sitchensis var. grayi (Wenzig) C.L. Hitchc. 

Gray's mountainash 

Sorbus sitchensis var. sitchensis M. Roemer 

Sitka mountainash 

Spiraea X pyramidata Greene (pro sp.) 

pyramid spirea 

Spiraea betulifolia Pallas 

white spirea 

Spiraea betulifolia var. lucida (Dougl. ex Greene) C.L. Hitchc. 

shinyleaf spirea 

Spiraea discolor Pursh 

= Holodiscus discolor 

Spiraea douglasii Hook. 

Douglas' spirea 

Spiraea douglasii var. douglasii Hook. 

rose spirea 

Spiraea douglasii var. menziesii (Hook.) K. Presl 

Menzies' spirea 

Spiraea splendens Baumann ex K. Koch 

rose meadowsweet 

Spiraea splendens var. splendens Baumann ex K. Koch 

mountain spirea 

Spiraea tomentosa L. 

steeplebush

RUBIACEAE 

Galium aparine L. 

stickywilly 

Galium bifolium S. Wats. 

twinleaf bedstraw 

Galium boreale L. 

northern bedstraw 

Galium divaricatum Pourret ex Lam. 

Lamarck's bedstraw 

Galium kamtschaticum Steller ex J.A. & J.H. Schultes 

boreal bedstraw 

Galium mexicanum Kunth 

Mexican bedstraw 

Galium mexicanum ssp. asperulum (Gray) Dempster 

Mexican bedstraw 

Galium mollugo L. 

false baby's breath 

Galium multiflorum Kellogg 

shrubby bedstraw 

Galium odoratum (L.) Scop. 

sweetscented bedstraw 

Galium oreganum Britt. 

Oregon bedstraw 

Galium parisiense L. 

wall bedstraw 

Galium serpenticum Dempster 

Intermountain bedstraw 

Galium serpenticum ssp. puberulum (Piper) Dempster & Ehrend. 

Intermountain bedstraw 

Galium sylvaticum L. 

scotchmist 

Galium tricornutum Dandy 

roughfruit corn bedstraw 

Galium trifidum L. 

threepetal bedstraw 

Galium trifidum ssp. columbianum (Rydb.) Hulten 


Galium trifidum ssp. subbiflorum (Wieg.) Piper 


Galium triflorum Michx. 

fragrant bedstraw 

Galium verum L. 

Yellow Spring bedstraw 

Galium watsonii (Gray) Heller 

Watson's bedstraw 

Kelloggia galioides Torr. 

milk kelloggia 

Sherardia arvensis L. 

blue fieldmadder 

RUPPIACEAE 

Ruppia maritima L. 

widgeongrass 


SALICACEAE 

Populus balsamifera L. 

balsam poplar 

Populus balsamifera ssp. trichocarpa (Torr. & Gray ex Hook.) 

Brayshaw 

black cottonwood 

Populus tremuloides Michx. 

quaking aspen 

Populus trichocarpa Torr. & Gray ex Hook. 

= Populus balsamifera ssp. trichocarpa 

Salix X fluviatilis Nutt. 

river willow 

Salix amygdaloides Anderss. 

peachleaf willow 

Salix arctica R. Br. ex Richards. 

Salix barclayi Anderss. 

Barclay's willow 

Salix bebbiana Sarg. 

Bebb willow 

Salix boothii Dorn 

Booth's willow 

Salix brachycarpa Nutt. 

barrenground willow 

Salix brachycarpa ssp. brachycarpa Nutt. 


Salix brachycarpa ssp. brachycarpa var. brachycarpa Nutt. 


Salix candida Fluegge ex Willd. 

sageleaf willow 

Salix cascadensis Cockerell 

cascade willow 

Salix commutata Bebb 

undergreen willow

Salix drummondiana Barratt ex Hook. 

Drummond's willow 

Salix eastwoodiae Cockerell ex Heller 

mountain willow 

Salix geyeriana Anderss. 

Geyer's willow 

Salix hookeriana Barratt ex Hook. 

dune willow 

Salix lasiolepis Benth. 

arroyo willow 

Salix lasiolepis var. lasiolepis Benth. 

Tracy willow 

Salix lucida Muhl. 

shining willow 

Salix lucida ssp. caudata (Nutt.) E. Murr. 

greenleaf willow 

Salix lucida ssp. lasiandra (Benth.) E. Murr. 

Pacific willow 

Salix lutea Nutt. 

yellow willow 

Salix maccalliana Rowlee 

McCalla's willow 

Salix melanopsis Nutt. 

dusky willow 

Salix myrtillifolia Anderss. 

blueberry willow 

Salix pedicellaris Pursh 

bog willow 

Salix planifolia Pursh 

diamondleaf willow 

Salix planifolia ssp. planifolia Pursh 

tealeaf willow 

Salix prolixa Anderss. 

MacKenzie's willow 

Salix reticulata L. 

netleaf willow 

Salix reticulata ssp. nivalis (Hook.) A.& D. Love & Kapoor 

snow willow 

Salix scouleriana Barratt ex Hook. 

Scouler's willow 

Salix sessilifolia Nutt. 

northwest sandbar willow 

Salix sitchensis Sanson ex Bong. 

Sitka willow 

Salix tweedyi (Bebb ex Rose) Ball 

Tweedy's willow 


SANTALACEAE 

Comandra pallida A. DC. 

= Comandra umbellata ssp. pallida 

Comandra umbellata (L.) Nutt. 

bastard toadflax 

Comandra umbellata ssp. californica (Eastw. ex Rydb.) Piehl 

California bastard toadflax 

Comandra umbellata ssp. pallida (A. DC.) Piehl 

pale bastard toadflax 

Geocaulon lividum (Richards.) Fern. 

false toadflax 

SARRACENIACEAE 

Darlingtonia californica Torr. 

California pitcherplant 

SAXIFRAGACEAE 

Bolandra oregana S. Wats. 

northern false coolwort 

Boykinia intermedia (Piper) G.N. Jones 

Sierran brookfoam 

Boykinia occidentalis Torr. & Gray 

coastal brookfoam 

Chrysosplenium glechomifolium Nutt. 

Pacific golden saxifrage 

Chrysosplenium tetrandrum (Lund ex Malmgr.) Th. Fries 

northern golden saxifrage 

Elmera racemosa (S. Wats.) Rydb. 

yellow coralbells 

Elmera racemosa var. puberulenta C.L. Hitchc. 


Elmera racemosa var. racemosa (S. Wats.) Rydb. 


Heuchera chlorantha Piper 

tall alumroot 

Heuchera cylindrica Dougl. ex Hook. 

roundleaf alumroot 

Heuchera cylindrica var. alpina Sw. 

alpine alumroot 

Heuchera cylindrica var. cylindrica Dougl. ex Hook. 

roundleaf alumroot

Heuchera cylindrica var. glabella (Torr. & Gray) Wheelock 

Mitella stauropetala var. stauropetala Piper 

beautiful alumroot 

smallflower miterwort 

Heuchera cylindrica var. orbicularis (Rosendahl, Butters & Lakela) Mitella trifida Graham 

Calder & Savile 

threeparted miterwort 

poker alumroot 

Mitella trifida var. trifida Graham 

Heuchera cylindrica var. septentrionalis Rosendahl, Butters & Lakela threeparted miterwort 

roundleaf alumroot 

Mitella trifida var. violacea (Rydb.) Rosendahl 

Heuchera glabra Willd. ex Roemer & J.A. Schultes 

threeparted miterwort 

alpine heuchera 

Parnassia fimbriata Koenig 

Heuchera grossulariifolia Rydb. 

Rocky Mountain parnassia 

gooseberryleaf alumroot 

Parnassia fimbriata var. fimbriata Koenig 

Heuchera grossulariifolia var. tenuifolia (Wheelock) C.L. Hitchc. fringed grass of Parnassus 

gooseberryleaf alumroot 

Parnassia fimbriata var. hoodiana C.L. Hitchc. 

Heuchera micrantha Dougl. ex Lindl. 

fringed grass of Parnassus 

crevice alumroot 

Parnassia kotzebuei Cham. ex Spreng. 

Heuchera micrantha var. diversifolia (Rydb.) Rosendahl, Butters & Kotzebue's grass of Parnassus 

Lakela 

Parnassia palustris L. 


northern grass of Parnassus 

Heuchera micrantha var. micrantha Dougl. ex Lindl. 

Parnassia palustris var. tenuis Wahlenb. 


marsh grass of Parnassus 

Leptarrhena pyrolifolia (D. Don) R. Br. ex Ser. 

Saxifraga adscendens L. 

fireleaf leptarrhena 

wedgeleaf saxifrage 

Lithophragma glabrum Nutt. 

Saxifraga adscendens ssp. oregonensis (Raf.) Bacig. 

bulbous woodlandstar 

small saxifrage 

Lithophragma parviflorum (Hook.) Nutt. ex Torr. & Gray 

Saxifraga apetala Piper 

smallflower woodlandstar 

western swamp saxifrage 

Lithophragma parviflorum var. parviflorum (Hook.) Nutt. ex Torr. & Saxifraga bronchialis L. 

Gray 

yellowdot saxifrage 

smallflower woodlandstar 

Saxifraga bronchialis ssp. austromontana (Wieg.) Piper 

Lithophragma tenellum Nutt. 

matted saxifrage 

slender woodlandstar 

Saxifraga bronchialis ssp. vespertina (Small) Piper 

Mitella breweri Gray 

yellowdot saxifrage 

Brewer's miterwort 

Saxifraga cernua L. 

Mitella caulescens Nutt. 

nodding saxifrage 

slightstemmed miterwort 

Saxifraga cespitosa L. 

Mitella diversifolia Greene 

tufted alpine saxifrage 

angleleaf miterwort 

Saxifraga cespitosa ssp. cespitosa L. 

Mitella nuda L. 


naked miterwort 

Saxifraga cespitosa ssp. cespitosa var. emarginata (Small) Rosendahl 

Mitella ovalis Greene 


coastal miterwort 

Saxifraga cespitosa ssp. subgemmifera Engl. & Irmsch. 

Mitella pentandra Hook. 


fivestamen miterwort 

Saxifraga ferruginea Graham 

Mitella stauropetala Piper 

rustyhair saxifrage 

smallflower miterwort 

Saxifraga ferruginea var. ferruginea Graham 


ustyhair saxifrage 

Saxifraga ferruginea var. vreelandii (Small) Engl. & Irmsch. 

Vreeland's saxifrage 

Saxifraga idahoensis Piper 

Idaho saxifrage 

Saxifraga integrifolia Hook. 

wholeleaf saxifrage 

Saxifraga lyallii Engl. 

redstem saxifrage 

Saxifraga lyallii ssp. lyallii Engl. 

Lyall's saxifrage 

Saxifraga marshallii Greene 

Marshall's saxifrage 

Saxifraga mertensiana Bong. 

wood saxifrage 

Saxifraga nelsoniana D. Don 

heartleaf saxifrage 

Saxifraga nelsoniana ssp. cascadensis (Calder & Savile) Hulten 

cascade saxifrage 

Saxifraga nidifica Greene 

peak saxifrage 

Saxifraga nidifica var. claytoniifolia (Canby ex Small) Elvander 


Saxifraga nidifica var. nidifica Greene 


Saxifraga nuttallii Small 

Nuttall's saxifrage 

Saxifraga occidentalis S. Wats. 

Alberta saxifrage 

Saxifraga odontoloma Piper 

brook saxifrage 

Saxifraga oppositifolia L. 

purple mountain saxifrage 

Saxifraga oregana T.J. Howell 

Oregon saxifrage 

Saxifraga rivularis L. 

weak saxifrage 

Saxifraga rufidula (Small) Macoun 

rustyhair saxifrage 

Saxifraga stolonifera Meerb. 

creeping saxifrage 

Saxifraga tischii Skelly 

Olympic saxifrage 

Saxifraga tolmiei Torr. & Gray 

Tolmie's saxifrage 


Saxifraga tricuspidata Rottb. 

three toothed saxifrage 

Suksdorfia ranunculifolia (Hook.) Engl. 

buttercup suksdorfia 

Suksdorfia violacea Gray 

violet suksdorfia 

Sullivantia oregana S. Wats. 

Oregon coolwort 

Tellima grandiflora (Pursh) Dougl. ex Lindl. 

bigflower tellima 

Tiarella trifoliata L. 

threeleaf foamflower 

Tiarella trifoliata var. laciniata (Hook.) Wheelock 


Tiarella trifoliata var. trifoliata L. 


Tiarella trifoliata var. unifoliata (Hook.) Kurtz 

oneleaf foamflower 

Tolmiea menziesii (Pursh) Torr. & Gray 

youth on age 

SCHEUCHZERIACEAE 

Scheuchzeria palustris L. 

scheuchzeria 

Scheuchzeria palustris ssp. americana (Fern.) Hulten 

American scheuchzeria 

SCROPHULARIACEAE 

Besseya rubra (Dougl. ex Hook.) Rydb. 

red besseya 

Castilleja Mutis ex L. f. 

Indian paintbrush 

Castilleja affinis Hook. & Arn. 


Castilleja affinis ssp. litoralis (Pennell) Chuang & Heckard 

Castilleja ambigua Hook. & Arn. 

ambiguous Indian paintbrush 

Castilleja ambigua ssp. ambigua Hook. & Arn. 

ambiguous Indian paintbrush 

Castilleja attenuata (Gray) Chuang & Heckard 

attenuate Indian paintbrush 

Castilleja cervina Greenm. 

deer Indian paintbrush

Castilleja cryptantha Pennell & G.N. Jones 


obscure Indian paintbrush 

Castilleja thompsonii Pennell 

Castilleja cusickii Greenm. 

Thompson's Indian paintbrush 

Cusick's Indian paintbrush 

Collinsia grandiflora Lindl. 

Castilleja elmeri Fern. 

Collinsia parviflora Lindl. 

Wenatchee Indian paintbrush 

smallflower blue eyed Mary 

Castilleja exserta (Heller) Chuang & Heckard 

Collinsia parviflora var. parviflora Lindl. 

exserted Indian paintbrush 

smallflower blue eyed Mary 

Castilleja exserta ssp. exserta (Heller) Chuang & Heckard 

Collinsia rattanii Gray 

exserted Indian paintbrush 

sticky blue eyed Mary 

Castilleja hispida Benth. 

Collinsia rattanii ssp. glandulosa (T.J. Howell) Pennell 

harsh Indian paintbrush 

sticky blue eyed Mary 

Castilleja hispida ssp. acuta Pennell 

Collinsia sparsiflora Fisch. & C.A. Mey. 

acute Indian paintbrush 

spinster's blue eyed Mary 

Castilleja hispida ssp. hispida Benth. 

Collinsia sparsiflora var. bruceae (M.E. Jones) Newsom 

harsh Indian paintbrush 

spinster's blue eyed Mary 

Castilleja levisecta Greenm. 

Cordylanthus capitatus Nutt. ex Benth. 

golden Indian paintbrush 

Yakima bird's beak 

Castilleja lutescens (Greenm.) Rydb. 

Cymbalaria muralis P.G. Gaertn., B. Mey. & Scherb. 

yellow Indian paintbrush 

Kenilworth ivy 

Castilleja miniata Dougl. ex Hook. 

Digitalis purpurea L. 

scarlet Indian paintbrush 

purple foxglove 

Castilleja miniata ssp. dixonii (Fern.) Kartesz, comb. nov. ined. Digitalis purpurea var. purpurea L. 

Castilleja miniata var. miniata Dougl. ex Hook. 

purple foxglove 

green Indian paintbrush 

Euphrasia arctica var. disjuncta (Fern. & Wieg.) Cronq. 

Castilleja minor (Gray) Gray 

= Euphrasia disjuncta 

lesser Indian paintbrush 

Euphrasia disjuncta Fern. & Wieg. 

Castilleja minor ssp. minor (Gray) Gray 

polar eyebright 

Castilleja parviflora Bong. 

Euphrasia officinalis L. 

mountain Indian paintbrush 

= Euphrasia stricta 

Castilleja parviflora var. albida (Pennell) Ownbey 

Euphrasia stricta D. Wolff ex J.F. Lehm. 

smallflower Indian paintbrush 

drug eyebright 

Castilleja parviflora var. olympica (G.N. Jones) Ownbey 

Gratiola ebracteata Benth. ex A. DC. 

Olympic Indian paintbrush 

bractless hedgehyssop 

Castilleja parviflora var. oreopola (Greenm.) Ownbey 

Gratiola neglecta Torr. 

Henry Indian paintbrush 

clammy hedgehyssop 

Castilleja rhexiifolia Rydb. 

Limosella acaulis Sesse & Moc. 

splitleaf Indian paintbrush 

Owyhee mudwort 

Castilleja rupicola Piper ex Fern. 

Limosella aquatica L. 

cliff Indian paintbrush 

water mudwort 

Castilleja septentrionalis Lindl. 

Limosella australis R. Br. 

Labrador Indian paintbrush 

Welsh mudwort 

Castilleja suksdorfii Gray 

Linaria canadensis (L.) Chaz. 

Suksdorf's Indian paintbrush 

= Nuttallanthus canadensis 

Castilleja tenuis (Heller) Chuang & Heckard 

Linaria canadensis var. texana (Scheele) Pennell 


= Nuttallanthus texanus 

Mimulus moschatus var. moschatus Dougl. ex Lindl. 

Linaria dalmatica (L.) P. Mill. 

muskflower 

Dalmatian toadflax 

Mimulus moschatus var. sessilifolius Gray 

Linaria dalmatica ssp. dalmatica (L.) P. Mill. 

muskflower 


Mimulus nanus Hook. & Arn. 

Linaria dalmatica ssp. macedonica (Griseb.) D.A. Sutton 

dwarf purple monkeyflower 


Mimulus nanus ssp. nanus Hook. & Arn. 

Linaria texana Scheele 

dwarf purple monkeyflower 

= Nuttallanthus texanus 

Mimulus primuloides Benth. 

Linaria vulgaris P. Mill. 

primrose monkeyflower 

butter and eggs 

Mimulus primuloides var. primuloides Benth. 

Lindernia dubia (L.) Pennell 

primrose monkeyflower 

moistbank pimpernel 

Mimulus pulsiferae Gray 

Lindernia dubia var. anagallidea (Michx.) Cooperrider 

candelabrum monkeyflower 

yellowseed false pimpernel 

Mimulus suksdorfii Gray 

Lindernia dubia var. dubia (L.) Pennell 

Suksdorf's monkeyflower 

yellowseed false pimpernel 

Mimulus tilingii Regel 

Melampyrum lineare Desr. 

Tiling's monkeyflower 

narrowleaf cowwheat 

Mimulus tilingii var. caespitosus (Greene) A.L. Grant 

Melampyrum lineare var. lineare Desr. 

subalpine monkeyflower 

American cowwheat 

Mimulus washingtonensis Gandog. 

Mimetanthe pilosa (Benth.) Greene 

Washington monkeyflower 

false monkeyflower 

Misopates orontium (L.) Raf. 

Mimulus alsinoides Dougl. ex Benth. 

linearleaf snapdragon 

wingstem monkeyflower 

Nothochelone nemorosa (Dougl. ex Lindl.) Straw 

Mimulus breviflorus Piper 

woodland beardtongue 

shortflower monkeyflower 

Nuttallanthus canadensis (L.) D.A. Sutton 

Mimulus breweri (Greene) Coville 

Canada toadflax 

Brewer's monkeyflower 

Nuttallanthus texanus (Scheele) D.A. Sutton 

Mimulus clivicola Greenm. 

Texas toadflax 

North Idaho monkeyflower 

Orthocarpus barbatus Cotton 

Mimulus cusickii (Greene) Rattan 

Grand Coulee owlclover 

Cusick's monkeyflower 

Orthocarpus bracteosus Benth. 

Mimulus dentatus Nutt. ex Benth. 

rosy owlclover 

coastal monkeyflower 

Orthocarpus castillejoides var. castillejoides Benth. 

Mimulus floribundus Lindl. 

johnnynip 

manyflowered monkeyflower 

Orthocarpus imbricatus Torr. ex S. Wats. 

Mimulus guttatus DC. 

mountain owlclover 

seep monkeyflower 

Orthocarpus luteus Nutt. 

Mimulus lewisii Pursh 

yellow owlclover 

purple monkeyflower 

Orthocarpus purpurascens var. purpurascens Benth. 

Mimulus moschatus Dougl. ex Lindl. 

red owlclover 

musk monkeyflower 

Orthocarpus tenuifolius (Pursh) Benth. 

Mimulus moschatus var. longiflorus Gray 

thinleaved owlclover 

muskflower 

Parentucellia viscosa (L.) Caruel 


yellow glandweed 

Barrett's beardtongue 

Pedicularis bracteosa Benth. 

Penstemon cardwellii T.J. Howell 

bracted lousewort 

Cardwell's beardtongue 

Pedicularis bracteosa var. atrosanguinea (Pennell & J.W. Thompson) Penstemon confertus Dougl. ex Lindl. 

Cronq. 

yellow penstemon 


Penstemon davidsonii Greene 

Pedicularis bracteosa var. bracteosa Benth. 

Davidson's penstemon 


Penstemon davidsonii var. davidsonii Greene 

Pedicularis bracteosa var. canbyi (Gray) Cronq. 

Davidson's penstemon 

Canby's lousewort 

Penstemon davidsonii var. menziesii (Keck) Cronq. 

Pedicularis bracteosa var. flavida (Pennell) Cronq. 

Menzies' penstemon 

towering lousewort 

Penstemon deustus Dougl. ex Lindl. 

Pedicularis bracteosa var. latifolia (Pennell) Cronq. 

scabland penstemon 

widepetal lousewort 

Penstemon deustus var. deustus Dougl. ex Lindl. 

Pedicularis bracteosa var. pachyrhiza (Pennell) Cronq. 

hotrock beardtongue 

towering lousewort 

Penstemon deustus var. variabilis (Suksdorf) Cronq. 

Pedicularis bracteosa var. siifolia (Rydb.) Cronq. 

hotrock beardtongue 

smoothflower lousewort 

Penstemon diphyllus Rydb. 

Pedicularis contorta Benth. 

twoleaf beardtongue 

coiled lousewort 

Penstemon ellipticus Coult. & Fisher 

Pedicularis contorta var. contorta Benth. 

rocky ledge penstemon 

coiled lousewort 

Penstemon eriantherus Pursh 

Pedicularis groenlandica Retz. 

fuzzytongue penstemon 

elephanthead lousewort 

Penstemon eriantherus var. eriantherus Pursh 

Pedicularis groenlandica ssp. surrecta (Benth.) Piper 

fuzzytongue penstemon 

Greenland lousewort 

Penstemon eriantherus var. whitedii (Piper) A. Nels. 

Pedicularis ornithorhyncha Benth. 

Whited's penstemon 

ducksbill lousewort 

Penstemon euglaucus English 

Pedicularis racemosa Dougl. ex Benth. 

glaucous beardtongue 

sickletop lousewort 

Penstemon fruticosus (Pursh) Greene 

Pedicularis racemosa ssp. alba Pennell 

bush penstemon 


Penstemon fruticosus var. fruticosus (Pursh) Greene 

Pedicularis racemosa ssp. racemosa Dougl. ex Benth. 

shrubby penstemon 


Penstemon fruticosus var. scouleri (Lindl.) Cronq. 

Pedicularis rainierensis Pennell & Warren 

littleleaf bush penstemon 

Mt. Rainier lousewort 

Penstemon fruticosus var. serratus (Keck) Cronq. 

Penstemon acuminatus Dougl. ex Lindl. 

sawleaf bush penstemon 

sharpleaf penstemon 

Penstemon gairdneri Hook. 

Penstemon acuminatus var. acuminatus Dougl. ex Lindl. 

Gairdner's beardtongue 

sharpleaf penstemon 

Penstemon gairdneri var. gairdneri Hook. 

Penstemon attenuatus Dougl. ex Lindl. 


sulphur penstemon 

Penstemon gairdneri var. oreganus Gray 

Penstemon attenuatus var. attenuatus Dougl. ex Lindl. 


sulphur penstemon 

Penstemon glandulosus Dougl. 

Penstemon barrettiae Gray 

stickystem penstemon 


Penstemon glandulosus var. chelanensis (Keck) Cronq. 

little yellowrattle 


Rhinanthus minor ssp. groenlandicus (Ostenf.) L. Neum. 

Penstemon glandulosus var. glandulosus Dougl. 

arctic rattlebox 


Rhinanthus minor ssp. minor L. 

Penstemon humilis Nutt. ex Gray 

cockscomb rhinanthus 

low penstemon 

Scrophularia lanceolata Pursh 

Penstemon humilis ssp. humilis Nutt. ex Gray 

lanceleaf figwort 

low beardtongue 

Scrophularia oregana Pennell 

Penstemon ovatus Dougl. ex Hook. 

Oregon figwort 

eggleaf beardtongue 

Synthyris missurica (Raf.) Pennell 

Penstemon pennellianus Keck 

tailed kittenstails 

Blue Mountain beardtongue 

Synthyris missurica ssp. missurica (Raf.) Pennell 

Penstemon procerus Dougl. ex Graham 

tailed kittenstails 

littleflower penstemon 

Synthyris missurica ssp. stellata (Pennell) Kartesz & Gandhi 

Penstemon procerus var. procerus Dougl. ex Graham 

western mountain kittenstails 

pincushion beardtongue 

Synthyris pinnatifida S. Wats. 

Penstemon procerus var. tolmiei (Hook.) Cronq. 

featherleaf kittenstails 

Tolmie's penstemon 

Synthyris pinnatifida var. lanuginosa (Piper) Cronq. 

Penstemon pruinosus Dougl. ex Lindl. 

featherleaf kittenstails 

Chilean beardtongue 

Synthyris reniformis (Dougl. ex Benth.) Benth. 

Penstemon richardsonii Dougl. ex Lindl. 

snowqueen 

cutleaf beardtongue 

Synthyris reniformis var. reniformis (Dougl. ex Benth.) Benth. 

Penstemon richardsonii var. richardsonii Dougl. ex Lindl. 

snowqueen 

Richardson's penstemon 

Synthyris schizantha Piper 

Penstemon rupicola (Piper) T.J. Howell 

fringepetal kittenstails 

cliff beardtongue 

Tonella floribunda Gray 

Penstemon rydbergii A. Nels. 

manyflower tonella 

Rydberg's penstemon 

Tonella tenella (Benth.) Heller 

Penstemon rydbergii var. rydbergii A. Nels. 

lesser baby innocence 

swollen penstemon 

Triphysaria eriantha (Benth.) Chuang & Heckard 

Penstemon serrulatus Menzies ex Sm. 

triphysaria 

serrulate penstemon 

Triphysaria eriantha ssp. eriantha (Benth.) Chuang & Heckard 

Penstemon speciosus Dougl. ex Lindl. 

triphysaria 

royal penstemon 

Triphysaria pusilla (Benth.) Chuang & Heckard 

Penstemon subserratus Pennell 

triphysaria 

finetooth beardtongue 

Verbascum blattaria L. 

Penstemon triphyllus Dougl. ex Lindl. 

moth mullein 

Riggin's penstemon 

Verbascum thapsus L. 

Penstemon venustus Dougl. ex Lindl. 

common mullein 

Venus penstemon 

Veronica americana Schwein. ex Benth. 

Penstemon washingtonensis Keck 

American speedwell 

Washington beardtongue 

Veronica anagallis-aquatica L. 

Penstemon wilcoxii Rydb. 

water speedwell 

Wilcox's penstemon 

Veronica arvensis L. 

Rhinanthus minor L. 

corn speedwell 


Veronica biloba L. 

twolobe speedwell 

Veronica chamaedrys L. 

germander speedwell 

Veronica cusickii Gray 

Cusick's speedwell 

Veronica filiformis Sm. 

threadstalk speedwell 

Veronica hederifolia L. 

ivyleaf speedwell 

Veronica longifolia L. 

longleaf speedwell 

Veronica officinalis L. 

common gypsyweed 

Veronica officinalis var. officinalis L. 


Veronica officinalis var. tournefortii (Vill.) Reichenb. 


Veronica peregrina L. 

neckweed 

Veronica peregrina ssp. peregrina L. 

neckweed 

Veronica peregrina ssp. xalapensis (Kunth) Pennell 

hairy purslane speedwell 

Veronica persica Poir. 

birdeye speedwell 

Veronica scutellata L. 

skullcap speedwell 

Veronica serpyllifolia L. 

thymeleaf speedwell 

Veronica serpyllifolia ssp. humifusa (Dickson) Syme 

brightblue speedwell 

Veronica serpyllifolia ssp. serpyllifolia L. 

thymeleaf speedwell 

Veronica wormskjoldii Roemer & J.A. Schultes 

American alpine speedwell 

SELAGINELLACEAE 

Selaginella densa Rydb. 

lesser spikemoss 

Selaginella densa var. scopulorum (Maxon) R. Tryon 

Rocky Mountain spikemoss 

Selaginella douglasii (Hook. & Grev.) Spring 

Douglas' spikemoss 

Selaginella oregana D.C. Eat. 

Oregon spikemoss 

Selaginella wallacei Hieron. 

Wallace's spikemoss 

SIMAROUBACEAE 

Ailanthus altissima (P. Mill.) Swingle 

tree of heaven 

SOLANACEAE 

Atropa bella-donna L. 

belladonna 

Datura stramonium L. 

jimsonweed 

Datura tatula L. 

= Datura stramonium 

Hyoscyamus niger L. 

black henbane 

Lycium barbarum L. 

matrimonyvine 

Nicotiana acuminata (Graham) Hook. 

manyflower tobacco 

Nicotiana acuminata var. multiflora (Phil.) Reiche 

manyflower tobacco 

Nicotiana attenuata Torr. ex S. Wats. 

coyote tobacco 

Physalis hispida (Waterfall) Cronq. 

prairie groundcherry 

Physalis longifolia Nutt. 

longleaf groundcherry 

Physalis longifolia var. subglabrata (Mackenzie & Bush) Cronq. 

longleaf groundcherry 

Physalis philadelphica Lam. 

Mexican groundcherry 

Physalis pruinosa L. 

strawberry tomato 

Solanum americanum P. Mill. 

American black nightshade 

Solanum dulcamara L. 

climbing nightshade 

Solanum physalifolium Rusby 

hoe nightshade 

Solanum ptychanthum Dunal 

nightshade 


Solanum rostratum Dunal 

buffalobur nightshade 

Solanum triflorum Nutt. 

cutleaf nightshade 

Solanum tuberosum L. 

Irish potato 

TAXACEAE 

Taxus brevifolia Nutt. 

Pacific yew 

THELYPTERIDACEAE 

Phegopteris connectilis (Michx.) Watt 

long beechfern 

Thelypteris nevadensis (Baker) Clute ex Morton 

Sierran marsh fern 

Thelypteris quelpaertensis (Christ) Ching 

queensveil maiden fern 

TYPHACEAE 

Typha latifolia L. 

broadleaf cattail 

ULMACEAE 

Celtis laevigata Willd. 

sugarberry 

Celtis laevigata var. reticulata (Torr.) L. Benson 

netleaf hackberry 

UMBELLIFERAE 

Angelica arguta Nutt. 

Lyall's angelica 

Angelica canbyi Coult. & Rose 

Canby's angelica 

Angelica genuflexa Nutt. 

kneeling angelica 

Angelica hendersonii Coult. & Rose 

beach angelica 

Angelica lucida L. 

wild celery 

Angelica tomentosa S. Wats. 

woolly angelica 

Anthriscus caucalis Bieb. 

burr chervil 

Apium prostratum Labill. 

prostrate marshwort 

Berula erecta (Huds.) Coville 

cutleaf waterparsnip 

Carum carvi L. 

caraway 

Cicuta bulbifera L. 

bulblet bearing water hemlock 

Cicuta douglasii (DC.) Coult. & Rose 

western water hemlock 

Conioselinum gmelinii (Cham. & Schlecht.) Steud. 

Pacific hemlockparsley 

Conium maculatum L. 

poison hemlock 

Cymopterus terebinthinus (Hook.) Torr. & Gray 

= Pteryxia terebinthina var. terebinthina 

Daucus carota L. 

Queen Anne's lace 

Daucus pusillus Michx. 

American wild carrot 

Eryngium articulatum Hook. 

beethistle 

Eryngium petiolatum Hook. 

rushleaf eryngo 

Foeniculum vulgare P. Mill. 

sweet fennel 

Glehnia littoralis F. Schmidt ex Miq. 

American silvertop 

Heracleum lanatum Michx. 

= Heracleum maximum 

Heracleum maximum Bartr. 

common cowparsnip 

Heracleum sphondylium L. 

eltrot (??) 

Hydrocotyle ranunculoides L. f. 

floating marshpennywort 

Leptotaenia dissecta Nutt. 

= Lomatium dissectum var. dissectum 

Leptotaenia multifida Nutt. 

= Lomatium dissectum var. multifidum 

Ligusticum apiifolium (Nutt. ex Torr. & Gray) Gray 

celeryleaf licoriceroot 

Ligusticum canbyi Coult. & Rose 


Canby's licoriceroot 

Hall's biscuitroot 

Ligusticum grayi Coult. & Rose 

Lomatium laevigatum (Nutt.) Coult. & Rose 

Gray's licoriceroot 

Slickrock biscuitroot 

Lilaeopsis occidentalis Coult. & Rose 

Lomatium macrocarpum (Nutt. ex Torr. & Gray) Coult. & Rose 

western grasswort 

bigseed biscuitroot 

Lomatium ambiguum (Nutt.) Coult. & Rose 

Lomatium martindalei (Coult. & Rose) Coult. & Rose 

Wyeth biscuitroot 

cascade desertparsley 

Lomatium bicolor (S. Wats.) Coult. & Rose 

Lomatium nudicaule (Pursh) Coult. & Rose 

Wasatch desertparsley 

barestem biscuitroot 

Lomatium bicolor var. leptocarpum (Torr. & Gray) Schlessman Lomatium orientale Coult. & Rose 

Wasatch desertparsley 

Northern Idaho biscuitroot 

Lomatium brandegei (Coult. & Rose) J.F. Macbr. 

Lomatium piperi Coult. & Rose 

Brandegee's desertparsley 

Indian biscuitroot 

Lomatium canbyi (Coult. & Rose) Coult. & Rose 

Lomatium quintuplex Schlessman & Constance 

Canby's biscuitroot 

Umtanum desertparsley 

Lomatium columbianum Mathias & Constance 

Lomatium rollinsii Mathias & Constance 

purple leptotaenia 

Rollins' biscuitroot 

Lomatium cous (S. Wats.) Coult. & Rose 

Lomatium salmoniflorum (Coult. & Rose) Mathias & Constance 

cous biscuitroot 

salmonflower biscuitroot 

Lomatium cuspidatum Mathias & Constance 

Lomatium serpentinum (M.E. Jones) Mathias 

Wenatchee desertparsley 

sweetscented biscuitroot 

Lomatium dissectum (Nutt.) Mathias & Constance 

Lomatium simplex (Nutt.) J.F. Macbr. 

lomatiumroot 

narrowleaf lomatium 

Lomatium dissectum var. dissectum (Nutt.) Mathias & Constance Lomatium simplex var. leptophyllum (Hook.) Mathias 

lomatiumroot 

narrowleaf lomatium 

Lomatium dissectum var. multifidum (Nutt.) Mathias & Constance Lomatium simplex var. simplex (Nutt.) J.F. Macbr. 

lomatiumroot 

Great Basin desertparsley 

Lomatium donnellii (Coult. & Rose) Coult. & Rose 

Lomatium suksdorfii (S. Wats.) Coult. & Rose 

Donnell's biscuitroot 

Suksdorf's desertparsley 

Lomatium farinosum (Hook.) Coult. & Rose 

Lomatium thompsonii (Mathias ) Cronq. 

northern biscuitroot 

Thompson's desertparsley 

Lomatium farinosum var. farinosum (Hook.) Coult. & Rose 

Lomatium triternatum (Pursh) Coult. & Rose 

northern biscuitroot 

nineleaf biscuitroot 

Lomatium farinosum var. hambleniae (Mathias & Constance) Lomatium triternatum var. anomalum (M.E. Jones ex Coult. & Rose) 

Schlessman 

Mathias 

Hamblen's biscuitroot 

broadnineleaf biscuitroot 

Lomatium geyeri (S. Wats.) Coult. & Rose 

Lomatium triternatum var. brevifolium (Coult. & Rose) Mathias 

Geyer's biscuitroot 


Lomatium gormanii (T.J. Howell) Coult. & Rose 

Lomatium triternatum var. macrocarpum (Coult. & Rose) Mathias 

Gorman's biscuitroot 


Lomatium grayi (Coult. & Rose) Coult. & Rose 

Lomatium triternatum var. triternatum (Pursh) Coult. & Rose 

Gray's biscuitroot 


Lomatium grayi var. grayi (Coult. & Rose) Coult. & Rose 

Lomatium tuberosum Hoover 

Gray's biscuitroot 

Hoover's desertparsley 

Lomatium hallii (S. Wats.) Coult. & Rose 

Lomatium utriculatum (Nutt. ex Torr. & Gray) Coult. & Rose 


common lomatium 

Lomatium watsonii (Coult. & Rose) Coult. & Rose 

Watson's desertparsley 

Oenanthe sarmentosa K. Presl ex DC. 

water parsely 

Orogenia linearifolia S. Wats. 

Great Basin Indian potato 

Osmorhiza berteroi DC. 

sweetcicely 

Osmorhiza chilensis Hook. & Arn. 

= Osmorhiza berteroi 

Osmorhiza depauperata Phil. 

bluntseed sweetroot 

Osmorhiza occidentalis (Nutt. ex Torr. & Gray) Torr. 

western sweetroot 

Osmorhiza purpurea (Coult. & Rose) Suksdorf 

purple sweetroot 

Pastinaca sativa L. 

wild parsnip 

Perideridia gairdneri (Hook. & Arn.) Mathias 

yampa 

Perideridia gairdneri ssp. borealis Chuang & Constance 

common yampah 

Perideridia gairdneri ssp. gairdneri (Hook. & Arn.) Mathias 

Gairdner's yampah 

Perideridia oregana (S. Wats.) Mathias 

squaw potato 

Pimpinella saxifraga L. 

solidstem burnet saxifrage 

Pimpinella saxifraga ssp. nigra (P. Mill.) Gaudin 

solidstem burnet saxifrage 

Pteryxia terebinthina (Hook.) Coult. & Rose 

smoothshore springparsley 

Pteryxia terebinthina var. foeniculacea (Nutt. ex Torr. & Gray) Mathias 

lesser lomatiumroot 

Pteryxia terebinthina var. terebinthina (Hook.) Coult. & Rose 

lesser lomatiumroot 

Sanicula arctopoides Hook. & Arn. 

footsteps of spring 

Sanicula bipinnatifida Dougl. ex Hook. 

purple sanicle 

Sanicula crassicaulis Poepp. ex DC. 

Pacific blacksnakeroot 

Sanicula crassicaulis var. crassicaulis Poepp. ex DC. 


Sanicula crassicaulis var. tripartita (Suksdorf) H. Wolff 


Sanicula graveolens Poepp. ex DC. 

northern sanicle 

Sanicula marilandica L. 

Maryland sanicle 

Scandix pecten-veneris L. 

shepherdsneedle 

Sium suave Walt. 

hemlock waterparsnip 

Tauschia hooveri Mathias & Constance 

Hoover's umbrellawort 

Tauschia stricklandii (Coult. & Rose) Mathias & Constance 

Strickland's umbrellawort 

Yabea microcarpa (Hook. & Arn.) K.-Pol. 

falsecarrot 

Zizia aptera (Gray) Fern. 

meadow zizia 

URTICACEAE 

Parietaria pensylvanica Muhl. ex Willd. 

Pennsylvania pellitory 

Parietaria pensylvanica var. pensylvanica Muhl. ex Willd. 

Pennsylvania pellitory 

Urtica dioica L. 

stinging nettle 

Urtica dioica ssp. gracilis (Ait.) Seland. 

California nettle 

Urtica dioica ssp. holosericea (Nutt.) Thorne 

stinging nettle 

Urtica gracilis Ait. 

= Urtica dioica ssp. gracilis 

Urtica holosericea Nutt. 

= Urtica dioica ssp. holosericea 

Urtica lyallii S. Wats. 

= Urtica dioica ssp. gracilis 

Urtica urens L. 

dwarf nettle 

VALERIANACEAE 

Plectritis ciliosa (Greene) Jepson 

longspur seablush 

Plectritis congesta (Lindl.) DC. 

shortspur seablush 


Plectritis congesta ssp. brachystemon (Fisch. & C.A. Mey.) Morey 


Plectritis congesta ssp. congesta (Lindl.) DC. 


Plectritis macrocera Torr. & Gray 

longhorn plectritis 

Plectritis macrocera ssp. grayi (Suksdorf) Morey 

Gray's seablush 

Plectritis macrocera ssp. macrocera Torr. & Gray 

white seablush 

Valeriana acutiloba Rydb. 

sharpleaf valerian 

Valeriana acutiloba var. pubicarpa (Rydb.) Cronq. 

hairyfruit valerian 

Valeriana columbiana Piper 

Wenatchee valerian 

Valeriana dioica L. 

marsh valerian 

Valeriana dioica var. sylvatica S. Wats. 

woods valerian 

Valeriana edulis Nutt. ex Torr. & Gray 

edible valerian 

Valeriana edulis var. edulis Nutt. ex Torr. & Gray 

tobacco root 

Valeriana officinalis L. 

garden valerian 

Valeriana scouleri Rydb. 

Scouler's valerian 

Valeriana sitchensis Bong. 

Sitka valerian 

Valerianella carinata Loisel. 

European cornsalad 

Valerianella locusta (L.) Lat. 

Lewiston cornsalad 

VERBENACEAE 

Verbena X perriana Moldenke 

verbena 

Verbena bracteata Lag. & Rodr. 

bigbract verbena 

Verbena hastata L. 

swamp verbena 

Verbena hastata var. scabra Moldenke 

swamp verbena 

Verbena stricta Vent. 

hoary verbena 


VIOLACEAE 

Viola adunca Sm. 

hookedspur violet 

Viola adunca var. adunca Sm. 

hookedspur violet 

Viola affinis Le Conte 

sand violet 

Viola arvensis Murr. 

field pansy 

Viola bakeri Greene 

Baker's violet 

Viola canadensis L. 

Canadian white violet 

Viola canadensis var. rugulosa (Greene) C.L. Hitchc. 

creepingroot violet 

Viola epipsila Ledeb. 

dwarf marsh violet 

Viola epipsila ssp. repens Becker 

dwarf marsh violet 

Viola flettii Piper 

Olympic violet 

Viola glabella Nutt. 

pioneer violet 

Viola howellii Gray 

Howell's violet 

Viola lanceolata L. 

bog white violet 

Viola lanceolata ssp. lanceolata L. 

bog white violet 

Viola langsdorfii Fisch. ex Gingins 

Aleutian violet 

Viola macloskeyi Lloyd 

small white violet 

Viola macloskeyi ssp. macloskeyi Lloyd 

Macloskey's violet 

Viola macloskeyi ssp. pallens (Banks ex DC.) M.S. Baker 

smooth white violet 

Viola nephrophylla var. nephrophylla Greene 

northern bog violet 

Viola orbiculata Geyer ex Holz. 

darkwoods violet

Viola palustris L. 

marsh violet 

Viola palustris var. palustris L. 

marsh violet 

Viola praemorsa Dougl. ex Lindl. 

canary violet 

Viola praemorsa ssp. linguifolia (Nutt.) M.S. Baker & J.C. Clausen 

ex M.E. Peck 

upland yellow violet 

Viola praemorsa ssp. praemorsa Dougl. ex Lindl. 

canary violet 

Viola purpurea Kellogg 

goosefoot violet 

Viola purpurea ssp. venosa (S. Wats.) M.S. Baker & J.C. Clausen 

goosefoot yellow violet 

Viola sempervirens Greene 

evergreen violet 

Viola sheltonii Torr. 

Shelton's violet 

Viola sororia Willd. 

common blue violet 

Viola trinervata (T.J. Howell) T.J. Howell ex Gray 

Rainier violet 

Viola vallicola A. Nels. 

valley violet 

Viola vallicola var. major (Hook.) Fabijan 

valley violet 

Viola vallicola var. vallicola A. Nels. 

sagebrush violet 

VISCACEAE 

Arceuthobium abietinum Engelm. ex Munz 

fir dwarf mistletoe 

Arceuthobium americanum Nutt. ex Engelm. 

American dwarf mistletoe 

Arceuthobium campylopodum Engelm. 

western dwarf mistletoe 

Arceuthobium douglasii Engelm. 

Douglas fir dwarf mistletoe 

Arceuthobium laricis (Piper) St. John 

larch dwarf mistletoe 

Arceuthobium tsugense (Rosendahl) G.N. Jones 

hemlock dwarf mistletoe 

VITACEAE 

Vitis vinifera L. 

domestic grape 

ZANNICHELLIACEAE 

Zannichellia palustris L. 

horned pondweed 

ZOSTERACEAE 

Phyllospadix scouleri Hook. 

Scouler's surfgrass 

Phyllospadix serrulatus Rupr. ex Aschers. 

toothed surfgrass 

Phyllospadix torreyi S. Wats. 

Torrey's surfgrass 

Zostera japonica Aschers. & Graebn. 

dwarf eelgrass 

Zostera marina L. 

seawrack 

Zostera marina var. latifolia Morong 

seawrack 

ZYGOPHYLLACEAE 

Peganum harmala L. 

Syrian rue 

Tribulus terrestris L. 

puncturevine 

Zygophyllum fabago L. 

Syrian beancaper

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