| Family |
Taxon |
Common Name | Photographs |
| Acoraceae |
Acorus americanus (Raf.) Raf. |
sweet-flag |
|
| Alismataceae |
Alisma subcordatum Raf. |
American water-plantain, common water-plantain, southern water-plantain |
|
| Amaranthaceae |
Amaranthus tuberculatus (Moq.) J.D.Sauer |
rough-fruited amaranth, rough-fruited water-hemp, tall water-hemp |
|
| Apiaceae |
Aegopodium podagraria L. |
bishop's gout-weed, gout-weed |
|
| Apiaceae |
Pastinaca sativa L. |
wild parsnip |
|
| Apocynaceae |
Apocynum androsaemifolium L. |
spreading dogbane |
|
| Apocynaceae |
Apocynum cannabinum L. |
hemp-dogbane, Indian hemp |
|
| Araceae |
Arisaema triphyllum (L.) Schott subsp. triphyllum |
Indian turnip, Jack-in-the-pulpit |
|
| Asclepiadaceae |
Asclepias amplexicaulis Sm. |
clasping milkweed, sand milkweed |
|
| Asclepiadaceae |
Asclepias incarnata L. subsp. incarnata |
swamp milkweed |
|
| Asclepiadaceae |
Asclepias syriaca L. |
common milkweed, silkweed |
|
| Asteraceae |
Achillea millefolium L. |
common yarrow, milfoil |
|
| Asteraceae |
Achillea millefolium L. subsp. lanulosa (Nutt.) Piper |
common yarrow, milfoil |
|
| Asteraceae |
Ambrosia artemisiifolia L. |
annual bur-sage, common ragweed, short ragweed |
|
| Asteraceae |
Ambrosia trifida L. var. trifida |
giant ragweed, great ragweed, horse-cane |
|
| Asteraceae |
Antennaria howellii Greene |
Howell's pussy-toes |
|
| Asteraceae |
Antennaria howellii Greene subsp. neodioica (Greene) R.J.Bayer |
field pussy-toes, Howell's pussy-toes |
|
| Asteraceae |
Antennaria neglecta Greene |
cat's-foot, field pussy-toes |
|
| Asteraceae |
Antennaria parlinii Fernald |
Parlin's pussy-toes, plantain pussy-toes |
|
| Asteraceae |
Antennaria parlinii Fernald subsp. fallax (Greene) R.J.Bayer & Stebbins |
Parlin's pussy-toes, plantain pussy-toes |
|
| Asteraceae |
Antennaria plantaginifolia (L.) Richardson |
plantain pussy-toes, plantain-leaved pussy-toes, woman's-tobacco |
|
| Asteraceae |
Anthemis cotula L. |
dog-fennel, mayweed, stinking chamomile, stinking-cotula |
|
| Asteraceae |
Arnoglossum atriplicifolium (L.) H.Rob. |
pale Indian-plantain |
|
| Asteraceae |
Artemisia ludoviciana Nutt. subsp. ludoviciana |
Louisiana sage-wort, western mugwort, white sage |
|
| Asteraceae |
Aster firmus Nees |
shining aster, shiny-leaved aster |
|
| Asteraceae |
Aster laevis L. var. laevis |
smooth aster, smooth blue aster |
|
| Asteraceae |
Aster laevis L. X A. lanceolatus Willd. |
|
|
| Asteraceae |
Aster linariifolius L. |
flax-leaved aster, stiff aster |
|
| Asteraceae |
Aster pilosus Willd. |
awl aster, frost aster, hairy aster, white old-field aster |
|
| Asteraceae |
Aster pilosus Willd. var. pilosus |
awl aster, frost aster, hairy aster, white old-field aster |
|
| Asteraceae |
Aster pilosus Willd. X A. sagittifolius Wedem. ex Willd. |
|
|
| Asteraceae |
Bidens cernua L. |
nodding beggar-ticks, nodding bur-marigold |
|
| Asteraceae |
Bidens frondosa L. |
common beggar-ticks, devil's beggar-ticks |
|
| Asteraceae |
Carduus X orthocephalus Wallr. |
plumeless thistle |
|
| Asteraceae |
Cirsium discolor (Muhl. ex Willd.) Spreng. X C. muticum Michx. |
|
|
| Asteraceae |
Cirsium flodmanii (Rydb.) Arthur |
Flodman's thistle, prairie thistle |
|
| Asteraceae |
Cirsium vulgare (Savi) Ten. |
bull thistle |
|
| Asteraceae |
Conyza canadensis (L.) Cronquist var. canadensis |
Canadian horseweed, fleabane, hogweed |
|
| Asteraceae |
Echinacea pallida (Nutt.) Nutt. |
pale purple coneflower, prairie coneflower |
|
| Asteraceae |
Erigeron annuus (L.) Pers. |
annual fleabane, eastern daisy fleabane |
|
| Asteraceae |
Erigeron philadelphicus L. |
common fleabane, marsh fleabane, Philadelphia daisy |
|
| Asteraceae |
Erigeron pulchellus Michx. var. pulchellus |
Robin's-plantain |
|
| Asteraceae |
Eupatorium altissimum L. |
upland boneset, tall boneset, tall eupatorium, tall thoroughwort |
|
| Asteraceae |
Eupatorium perfoliatum L. var. perfoliatum |
boneset, common boneset, thoroughwort |
|
| Asteraceae |
Euthamia graminifolia (L.) Nutt. var. graminifolia |
common flat-topped goldenrod, grass-leaved goldenrod |
|
| Asteraceae |
Galinsoga quadriradiata Ruiz & Pav. |
common quick-weed, Peruvian-daisy, quick-weed, shaggy-soldier |
|
| Asteraceae |
Gnaphalium obtusifolium L. var. obtusifolium |
cat's-foot, fragrant cudweed, old-field-balsam, old-field cudweed, rabbit-tobacco |
|
| Asteraceae |
Helenium amarum (Raf.) H.Rock var. amarum |
bitter-weed, narrow-leaved sneezeweed, yellow-dicks |
|
| Asteraceae |
Helianthus giganteus L. |
giant sunflower, swamp sunflower, tall sunflower |
|
| Asteraceae |
Helianthus occidentalis Riddell subsp. occidentalis |
few-leaved sunflower, naked-stemmed sunflower, western sunflower |
|