| Family |
Taxon |
Common Name | Photographs |
| Euphorbiaceae |
Acalypha rhomboidea Raf. |
rhombic copper-leaf, three-seeded-mercury |
|
| Aceraceae |
Acer negundo L. |
ash-leaved maple, box elder |
|
| Aceraceae |
Acer negundo L. var. negundo |
box elder |
|
| Aceraceae |
Acer negundo L. var. violaceum (Kirchn.) H.Jaeger |
box elder |
|
| Aceraceae |
Acer rubrum L. var. rubrum |
red maple |
|
| Aceraceae |
Acer saccharinum L. |
silver maple, soft maple |
|
| Aceraceae |
Acer saccharum Marshall var. saccharum |
hard maple, sugar maple |
|
| Aceraceae |
Acer spicatum Lam. |
mountain maple |
|
| Asteraceae |
Achillea millefolium L. |
common yarrow, milfoil |
|
| Asteraceae |
Achillea millefolium L. subsp. lanulosa (Nutt.) Piper |
common yarrow, milfoil |
|
| Acoraceae |
Acorus americanus (Raf.) Raf. |
sweet-flag |
|
| Ranunculaceae |
Actaea pachypoda Elliott |
doll's-eyes, white baneberry |
|
| Ranunculaceae |
Actaea rubra (Aiton) Willd. |
red baneberry |
|
| Pteridaceae |
Adiantum pedatum L. |
maidenhair fern, northern maidenhair fern |
|
| Scrophulariaceae |
Agalinis tenuifolia (Vahl) Raf. |
common agalinis, common false foxglove |
|
| Lamiaceae |
Agastache foeniculum (Pursh) Kuntze |
blue giant hyssop, fragrant giant hyssop, lavender giant hyssop |
|
| Lamiaceae |
Agastache scrophulariaefolia (Willd.) Kuntze |
figwort giant hyssop, purple giant hyssop |
|
| Rosaceae |
Agrimonia gryposepala Wallr. |
common agrimony, tall hairy agrimony |
|
| Rosaceae |
Agrimonia pubescens Wallr. |
downy agrimony, soft agrimony |
|
| Poaceae |
Agrostis perennans (Walter) Tuck. var. perennans |
autumn bent grass, thin grass, upland bent grass |
|
| Poaceae |
Agrostis scabra Willd. |
rough bent grass, southern hair grass, tickle grass |
|
| Liliaceae |
Allium canadense L. var. canadense |
meadow garlic, wild garlic, wild onion |
|
| Liliaceae |
Allium stellatum Ker Gawl. |
Autumn onion, prairie onion, wild onion |
|
| Liliaceae |
Allium tricoccum Sol. |
ramp, wild leek |
|
| Liliaceae |
Allium tricoccum Sol. var. burdickii Hanes |
narrow-leaved wild leek, wild leek |
|
| Betulaceae |
Alnus incana (L.) Moench subsp. rugosa (Du Roi) R.T.Clausen |
mountain alder, speckled alder, swamp alder |
|
| Amaranthaceae |
Amaranthus albus L. |
prostrate pigweed, tumble pigweed, tumbleweed, tumbleweed amaranth, white amaranth |
|
| Amaranthaceae |
Amaranthus retroflexus L. |
common amaranth, pigweed, redroot, rough amaranth, rough pigweed, wild-beet amaranth |
|
| Amaranthaceae |
Amaranthus tuberculatus (Moq.) J.D.Sauer |
rough-fruited amaranth, rough-fruited water-hemp, tall water-hemp |
|
| Asteraceae |
Ambrosia artemisiifolia L. |
annual bur-sage, common ragweed, short ragweed |
|
| Asteraceae |
Ambrosia trifida L. var. trifida |
giant ragweed, great ragweed, horse-cane |
|
| Rosaceae |
Amelanchier laevis Wiegand |
Allegheny serviceberry, Allegheny shadblow, smooth serviceberry |
|
| Rosaceae |
Amelanchier sanguinea (Pursh) DC. var. sanguinea |
low shadblow, New England serviceberry, round-leaved serviceberry |
|
| Fabaceae |
Amorpha canescens Pursh |
lead-plant |
|
| Fabaceae |
Amorpha fruticosa L. |
desert indigo-bush, false indigo, indigo-bush |
|
| Fabaceae |
Amphicarpaea bracteata (L.) Fernald |
American hog-peanut, hog-peanut |
|
| Asteraceae |
Anaphalis margaritacea (L.) Benth. & Hook.f. |
pearly everlasting, western pearly everlasting |
|
| Poaceae |
Andropogon gerardii Vitman |
big blue-stem, turkey-foot |
|
| Ranunculaceae |
Anemone acutiloba (DC.) G.Lawson |
sharp-lobed hepatica |
|
| Ranunculaceae |
Anemone americana (DC.) H.Hara |
round-lobed hepatica |
|
| Ranunculaceae |
Anemone canadensis L. |
Canada anemone, Canadian anemone, meadow anemone |
|
| Ranunculaceae |
Anemone patens L. var. multifida Pritz. |
American pasqueflower, prairie-smoke |
|
| Ranunculaceae |
Anemone quinquefolia L. var. quinquefolia |
nightcaps, wood anemone |
|
| Ranunculaceae |
Anemone virginiana L. |
tall anemone, tall thimbleweed |
|
| Ranunculaceae |
Anemone virginiana L. var. alba (Oakes) A.W.Wood |
tall anemone, thimbleweed |
|
| Ranunculaceae |
Anemone virginiana L. var. virginiana |
tall anemone, tall thimbleweed |
|
| Apiaceae |
Angelica atropurpurea L. |
common great angelica, great angelica, purple-stem angelica |
|
| Apiaceae |
Angelica atropurpurea L. var. occidentalis Fassett |
purple-stem angelica, western great angelica |
|
| Asteraceae |
Antennaria plantaginifolia (L.) Richardson |
plantain pussy-toes, plantain-leaved pussy-toes, woman's-tobacco |
|
| Apocynaceae |
Apocynum androsaemifolium L. |
spreading dogbane |
|