Alberta Invasive Plant Identification Guide

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Sarah Schumacher, Wheatland County Loosestrife, purple Lythrum salicaria, Lythraceae (Loosestrife Family) Category: Prohibited Noxious • Information: Native to Europe, Asia and Africa, introduced as an orna- mental, poses huge threats to riparian/wetland habitat. • Life Cycle: Perennial. • Root: Short rhizomes and taproot. Sarah Schumacher, Wheatland County • Leaves: Clasping, lance-shaped leaves with a notched base and smooth margins are opposite or whorled on stem. • Stems: 1.5-3m tall, square or octagonal. • Flower: Clustered on vertical terminal spike extending 5cm to 90cm down stem, one or more flowering branches; rose to purple with four to eight petals. • Seed/Fruit: Small brown capsules with many seeds, can produce up to 2.5 million seeds/plant, remains viable up to 20 years. • Control: Handpick, chemical. http://www.invasiveplants.ab.ca/Downloads/FS-PurpleLoosestrife.pdf Sarah Schumacher, Wheatland County Sarah Schumacher, Wheatland County 38
Steve Dewey, Utah State University, Bugwood.org Medusahead Taeniatherum caput‑medusae, Poaceae (Grass Family) Category: Prohibited Noxious • Information: Introduced from the Mediterranean, weed of forage. • Life Cycle: Annual. • Root: Fibrous. • Leaves: Produces tillers but very few leaves, narrow. •Stems: Hairy. • Flower: Awns 2-7cm long, stiff, finely barbed. • Seed/Fruits: Seed twists as fruit matures, reproduces by seed, doesn't shatter, 7 seeds per spike. •Toxicity: Barbed awns can cause injury to grazing animals. • Control: Mowing, early grazing and cultivation. Chris Evans, River to River CWMA, Bugwood.org Steve Dewey, Utah State University, Bugwood.org 39 Steve Hurst, USDA NRCS PLANTS Database, Bugwood
Page 1 and 2: Alberta Invasive Plant Identificati
Page 3 and 4: Alberta Invasive Plant Identificati
Page 5 and 6: Alberta Weed Control Act Legislatio
Page 7 and 8: White Flowers Scentless Chamomile P
Page 9 and 10: Yellow Flowers Hawkweed spp. Pg. 24
Page 11 and 12: Prohibited Noxious Weeds Prohibited
Page 13 and 14: Balsam, Himalayan Impatiens glandul
Page 15 and 16: http://commons.wikimedia.org/wiki/F
Page 17 and 18: Montana State University Invasive P
Page 21 and 22: Flowering Rush Butomus umbellatus,
Page 23 and 24: USDA APHIS PPQ Archive, USDA APHIS
Page 25 and 26: Michael Shephard, USDA Forest Servi
Page 27 and 28: Donna R. Ellis, University of Conne
Page 29 and 30: Knapweed, Bighead Centaurea macroce
Page 35 and 36: knapweed, Squarrose Centaurea virga
Page 37: Knotweed Complex Fallopia spp./ Pol
Page 41 and 42: Puncturevine Tribulus terrestris, Z
Page 43 and 44: Rush Skeletonweed Chondrilla juncea
Page 45 and 46: Saltlover Halogeton glomeratus, Che
Page 47 and 48: Starthistle, Yellow Centaurea solst
Page 49 and 50: Thistle, Nodding Carduus nutans, As
Page 51 and 52: Noxious Weeds Noxious Weeds have th
Page 53 and 54: Bellflower, Creeping Campanula rapu
Page 55 and 56: Blueweed Echium vulgare, Boraginace
Page 57 and 58: Brome, Japanese Bromus japonicas, P
Page 59 and 60: Buttercup, Tall Ranunculus acris, R
Page 61 and 62: Clematis, Yellow Clematis tangutica
Page 63 and 64: Oxeye Daisy Leucanthemum vulgare, A
Page 65 and 66: Henbane, Black Hyoscyamus niger, So
Page 67 and 68: Hound’s‑Tongue Cynoglossum offi
Page 69 and 70: Life cycle: Perennial. Root: Deep
Page 71 and 72: Sow thistle, Perennial Sonchus arve
Page 73 and 74: Tansy, Common Tanacetum vulgare, As
Page 75 and 76: Toadflax, Dalmatian Linaria dalmati
Page 77 and 78: Glossary adventitious roots Roots a
Page 79 and 80: Weed Websites Alberta Invasive Plan
Page 81: Produced by Wheatland County For mo

Alberta Invasive Plant Identification Guide

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