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Penthorum sedoides L.
Ditch stonecrop S5 CP HV
Saxifraga virginiensis Michx.
Early saxifrage S5 CP HV RC BT
Tiarella cordifolia L.
Foamflower S5 CP HV
Rose family
Agrimonia gryposepala Wallr.
Rosaceae
Tall hairy agrimony S5 CP
Agrimonia parviflora Aiton
Many-flowered agrimony S3 S4 R
Agrimonia pubescens Wallr.
Hairy agrimony S4 CP HV RC
[Specimens previously misidentified as A. striata Michx.]
Amelanchier alnifolia (Nutt.) Nutt. ex R. Roem.
Saskatoon berry S4? CP HV RC
[A. humilis Wieg. var. humilis]
Amelanchier arborea (Michx. f.) Fern.
Downy juneberry S5 CP
Amelanchier laevis Wiegand
Smooth juneberry S5 CP HV
Amelanchier sanguinea (Pursh) DC.
Roundleaf juneberry S5? CP RC
Amelanchier spicata (Lam.) K. Koch
N Low juneberry S5? HV
Amelanchier X wiegandii Nielsen
? Wiegand’s juneberry S1? RC
[A. arborea X A. sanguinea?]
Most specimens have been referred to other taxa.
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The following treatment of Crataegus follows Dr. Phipp’s revisions of
HAM collections. Except where noted with a “?” at least one voucher
of each species has been annotated by Dr. Phipps or Dr. J.S.Pringle.
Crataegus beata Sarg.
Dunbar’s hawthorn SH CP
Crataegus brainerdii Sarg.
Brainerd’s hawthorn S2 CP
Crataegus calpodendron (Ehrh.) Medik.
Urn-fruited hawthorn S4S5 CP HV RC BT
Crataegus chrysocarpa Ashe
Round-leaved hawthorn S5 CP RC
Crataegus compacta Sarg.
Compact hawthorn S4? CP
Crataegus compta Sarg.
Adorned hawthorn S2? CP
Crataegus corusca Sarg.
Gleaming hawthorn S2 S3 CP
Crataegus dissona Sarg.
Hawthorn S3 CP
Crataegus dodgei Ashe
Dodge’s hawthorn S4 CP HV
Crataegus flabellata (Bosc ex Spach) K. Koch
? Bosc’s thorn S4? RC
Crataegus foetida Ashe
? Ill-scented hawthorn SH
Crataegus fulleriana Sarg.
Fuller’s hawthorn S2? CP
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