| Family |
Taxon |
Common Name | Photographs |
| Pinaceae |
Abies balsamea (L.) Mill. |
balsam fir, Canada balsam |
|
| Aceraceae |
Acer negundo L. |
ash-leaved maple, box elder |
|
| Aceraceae |
Acer saccharum Marshall var. saccharum |
hard maple, sugar maple |
|
| Asteraceae |
Achillea millefolium L. |
common yarrow, milfoil |
|
| Rosaceae |
Agrimonia gryposepala Wallr. |
common agrimony, tall hairy agrimony |
|
| Poaceae |
Agrostis gigantea Roth |
redtop |
|
| Poaceae |
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. |
southern hair grass, tickle grass, winter bent grass |
|
| Poaceae |
Agrostis stolonifera L. |
creeping bent grass, creeping tickle grass |
|
| Alismataceae |
Alisma triviale Pursh |
northern water-plantain |
|
| Brassicaceae |
Alliaria petiolata (M.Bieb.) Cavara & Grande |
garlic mustard |
|
| Amaranthaceae |
Amaranthus albus L. |
prostrate pigweed, tumble pigweed, tumbleweed, tumbleweed amaranth, white amaranth |
|
| Amaranthaceae |
Amaranthus blitoides S.Watson |
creeping amaranth, mat amaranth, matweed, matweed amaranth, prostratre amaranth, prostrate pigweed |
|
| Amaranthaceae |
Amaranthus retroflexus L. |
common amaranth, pigweed, redroot, rough amaranth, rough pigweed, wild-beet amaranth |
|
| Primulaceae |
Anagallis arvensis L. |
common pimpernel, scarlet pimpernel |
|
| Poaceae |
Andropogon gerardii Vitman |
big blue-stem, turkey-foot |
|
| Asteraceae |
Anthemis cotula L. |
dog-fennel, mayweed, stinking chamomile, stinking-cotula |
|
| Apocynaceae |
Apocynum androsaemifolium L. |
spreading dogbane |
|
| Apocynaceae |
Apocynum sibiricum Jacq. |
clasping dogbane, Indian hemp |
|
| Brassicaceae |
Arabis laevigata (Muhl. ex Willd.) Poir. var. laevigata |
smooth bank-cress, smooth rock-cress |
|
| Araliaceae |
Aralia elata (Miq.) Seem. |
Hercules-club |
|
| Araceae |
Arisaema dracontium (L.) Schott |
dragon-root, green dragon |
|
| Araceae |
Arisaema triphyllum (L.) Schott subsp. triphyllum |
Indian turnip, Jack-in-the-pulpit |
|
| Poaceae |
Aristida oligantha Michx. |
old-field three-awn, plains three-awn grass |
|
| Asteraceae |
Artemisia biennis Willd. |
biennial sage-wort, biennial wormwood |
|
| Asteraceae |
Artemisia ludoviciana Nutt. subsp. ludoviciana |
Louisiana sage-wort, western mugwort, white sage |
|
| Aristolochiaceae |
Asarum canadense L. |
Canadian wild-ginger, wild-ginger |
|
| Asclepiadaceae |
Asclepias incarnata L. subsp. incarnata |
swamp milkweed |
|
| Asclepiadaceae |
Asclepias verticillata L. |
whorled milkweed |
|
| Asteraceae |
Aster drummondii Lindl. |
Drummond's aster, hairy heart-leaved aster |
|
| Asteraceae |
Aster ericoides L. |
heath aster, squarrose white aster, white prairie aster |
|
| Asteraceae |
Aster ericoides L. var. ericoides |
heath aster, squarrose white aster, white prairie aster |
|
| Asteraceae |
Aster ericoides L. X A. sericeus Vent. |
|
|
| Asteraceae |
Aster firmus Nees |
shining aster, shiny-leaved aster |
|
| Asteraceae |
Aster furcatus E.S.Burgess |
forked aster, midwestern white heart-leaved aster |
|
| Asteraceae |
Aster lanceolatus Willd. var. interior (Wiegand) A.G.Jones X A. lanceolatus Willd. var. simplex (Willd.) A.G.Jones |
|
|
| Asteraceae |
Aster lateriflorus (L.) Britton |
calico aster, goblet aster, side-flowering aster |
|
| Asteraceae |
Aster lateriflorus (L.) Britton var. lateriflorus |
calico aster, goblet aster, side-flowering aster |
|
| Asteraceae |
Aster lateriflorus (L.) Britton X A. ontarionis Wiegand |
|
|
| Asteraceae |
Aster lateriflorus (L.) Britton X A. oolentangiensis Riddell |
|
|
| Asteraceae |
Aster lateriflorus (L.) Britton X A. puniceus L. |
|
|
| Asteraceae |
Aster lateriflorus (L.) Britton X A. sagittifolius Wedem. ex Willd. |
|
|
| Asteraceae |
Aster macrophyllus L. |
big-leaved aster, large-leaved aster |
|
| Asteraceae |
Aster novae-angliae L. |
New England aster |
|
| Asteraceae |
Aster oolentangiensis Riddell |
azure aster, prairie heart-leaved aster, sky-blue aster |
|
| Asteraceae |
Aster pilosus Willd. |
awl aster, frost aster, hairy aster, white old-field aster |
|
| Asteraceae |
Aster puniceus L. |
bristly aster, purple-stem aster, swamp aster |
|
| Asteraceae |
Aster shortii Lindl. |
Midwestern blue heart-leaved aster, Short's aster |
|
| Asteraceae |
Aster umbellatus Mill. |
flat-top aster, parasol aster, tall flat-topped white aster |
|
| Asteraceae |
Aster umbellatus Mill. var. umbellatus |
flat-top aster, parasol aster, tall flat-topped white aster |
|
| Chenopodiaceae |
Atriplex patula L. |
common orache, spear-scale, spear orach, spear saltbush |
|