| Taxon |
Family |
Common Name |
Photograph |
| Acalypha rhomboidea Raf. |
Euphorbiaceae |
rhombic copper-leaf, three-seeded-mercury |
|
| Acorus americanus (Raf.) Raf. |
Acoraceae |
sweet-flag |
|
| Adoxa moschatellina L. |
Adoxaceae |
moschatel, musk-root |
|
| Aegopodium podagraria L. |
Apiaceae |
bishop's gout-weed, gout-weed |
|
| Agastache nepetoides (L.) Kuntze |
Lamiaceae |
catnip giant hyssop, yellow giant hyssop |
|
| Allium tricoccum Sol. |
Liliaceae |
ramp, wild leek |
|
| Allium tricoccum Sol. var. burdickii Hanes |
Liliaceae |
narrow-leaved wild leek, wild leek |
|
| Allium tricoccum Sol. var. tricoccum |
Liliaceae |
ramp, wild leek |
|
| Amaranthus albus L. |
Amaranthaceae |
prostrate pigweed, tumble pigweed, tumbleweed, tumbleweed amaranth, white amaranth |
|
| Amaranthus albus L. X A. blitoides S.Watson |
Amaranthaceae |
|
|
| Amaranthus arenicola I.M.Johnst. |
Amaranthaceae |
sand amaranth, sand-hills amaranth |
|
| Amaranthus blitoides S.Watson |
Amaranthaceae |
creeping amaranth, mat amaranth, matweed, matweed amaranth, prostratre amaranth, prostrate pigweed |
|
| Amaranthus hybridus L. |
Amaranthaceae |
green amaranth, green pigweed, smooth amaranth, smooth pigweed |
|
| Amaranthus hybridus L. X A. retroflexus L. |
Amaranthaceae |
|
|
| Amaranthus hybridus L. X A. tuberculatus (Moq.) J.D.Sauer |
Amaranthaceae |
|
|
| Amaranthus powellii S.Watson |
Amaranthaceae |
green amaranth, Powell's amaranth, Powell's smooth amaranth, tall amaranth |
|
| Amaranthus powellii S.Watson X A. retroflexus L. |
Amaranthaceae |
|
|
| Amaranthus powellii S.Watson X A. tuberculatus (Moq.) J.D.Sauer |
Amaranthaceae |
|
|
| Amaranthus retroflexus L. |
Amaranthaceae |
common amaranth, pigweed, redroot, rough amaranth, rough pigweed, wild-beet amaranth |
|
| Amaranthus retroflexus L. X A. tuberculatus (Moq.) J.D.Sauer |
Amaranthaceae |
|
|
| Amaranthus spinosus L. |
Amaranthaceae |
spiny amaranth, thorny amaranth |
|
| Ambrosia artemisiifolia L. |
Asteraceae |
annual bur-sage, common ragweed, short ragweed |
|
| Ambrosia psilostachya DC. |
Asteraceae |
perennial ragweed, western ragweed |
|
| Ambrosia tomentosa Nutt. |
Asteraceae |
bur ragweed, skeleton-leaf bur ragweed, skeleton-leaf bur-sage |
|
| Ambrosia trifida L. var. trifida |
Asteraceae |
giant ragweed, great ragweed, horse-cane |
|
| Ambrosia X intergradiens W.H.Wagner |
Asteraceae |
intergrading ragweed |
|
| Androsace occidentalis Pursh |
Primulaceae |
rock-jasmine, western androsace |
|
| Anethum graveolens L. |
Apiaceae |
dill |
|
| Arisaema dracontium (L.) Schott |
Araceae |
dragon-root, green dragon |
|
| Arisaema triphyllum (L.) Schott subsp. triphyllum |
Araceae |
Indian turnip, Jack-in-the-pulpit |
|
| Artemisia absinthium L. |
Asteraceae |
absinth sage-wort, absinth wormwood, absinthe, common wormwood, sage-wort |
|
| Artemisia annua L. |
Asteraceae |
annual sage-wort, sweet wormwood |
|
| Artemisia biennis Willd. |
Asteraceae |
biennial sage-wort, biennial wormwood |
|
| Artemisia campestris L. subsp. caudata (Michx.) H.M.Hall & Clem. |
Asteraceae |
field sage-wort, field wormwood |
|
| Artemisia dracunculus L. |
Asteraceae |
dragon sage-wort, dragon wormwood, estragon, false tarragon |
|
| Artemisia frigida Willd. |
Asteraceae |
fringed sage-wort, prairie sagebrush, prairie sage-wort |
|
| Artemisia ludoviciana Nutt. subsp. ludoviciana |
Asteraceae |
Louisiana sage-wort, western mugwort, white sage |
|
| Artemisia pontica L. |
Asteraceae |
Roman wormwood |
|
| Artemisia serrata Nutt. |
Asteraceae |
saw-leaf mugwort, saw-toothed sagebrush, saw-tooth wormwood, toothed sage |
|
| Artemisia stelleriana Besser |
Asteraceae |
beach sage-wort, beach wormwood, dusty-miller sage-wort |
|
| Artemisia vulgaris L. |
Asteraceae |
common wormwood, mugwort, sage-wort |
|
| Asarum canadense L. |
Aristolochiaceae |
Canadian wild-ginger, wild-ginger |
|
| Asclepias exaltata L. |
Asclepiadaceae |
poke milkweed, tall milkweed |
|
| Asclepias hirtella (Pennell) Woodson |
Asclepiadaceae |
prairie milkweed, tall green milkweed |
|
| Asclepias lanuginosa Nutt. |
Asclepiadaceae |
side-cluster milkweed, woolly milkweed |
|
| Asclepias meadii Torr. ex A.Gray |
Asclepiadaceae |
Mead's milkweed |
|
| Asclepias verticillata L. |
Asclepiadaceae |
whorled milkweed |
|
| Asclepias viridiflora Raf. |
Asclepiadaceae |
green-flowered milkweed, short green milkweed |
|
| Atriplex hortensis L. |
Chenopodiaceae |
garden orache |
|
| Atriplex patula L. |
Chenopodiaceae |
common orache, spear-scale, spear orach, spear saltbush |
|
