| 1. --- Alternate-leaved Dogwood ( Cornus alternifolia) | |
| 2. --- American Beech ( Fagus grandifolia) | |
3.  American Black Currant ( Ribes americanum)
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4.  American Brooklime ( Veronica americana)
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5.  American Elm ( Ulmus americana)
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6.  American Germander ( Teucrium canadense)
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| 7. --- American Mountain Ash ( Sorbus americana) | |
8.  American Wintergreen ( Pyrola americana)
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9.  Autumn Joy Sedum ( Sedum herbstfreude)
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| 10. --- Barren Strawberry ( Waldsteinia fragarioides) | |
11.  Bastard Toadflax ( Comandra umbellata)
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12.  Bay Forget-me-not ( Myosotis laxa)
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13.  Beaked Hazelnut ( Corylus cornuta)
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| 14. --- Bedstraws (genus: Galium) | |
| 15. --- Beechdrops ( Epifagus virginiana) | |
| 16. --- Bigtooth Aspen ( Populus grandidentata) | |
| 17. --- Bitter Nightshade ( Solanum dulcamara) | |
18.  Black Chokeberry ( Aronia melanocarpa)
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| 19. --- Black dog-strangling vine ( Cynanchum louiseae) | |
| 20. --- Black Knapweed ( Centaurea nigra) | |
21.  Black Locust ( Robinia pseudoacacia)
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| 22. --- Black Medick ( Medicago lupulina) | |
| 23. --- Blackthorn ( Prunus spinosa) | |
24.  Blue-eyed Grass ( Sisyrinchium montanum)
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25.  Bluebead Lily ( Clintonia borealis)
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