| Family |
Taxon |
Common Name | Photographs |
| 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 nigrum F.Michx. |
black maple |
|
| Aceraceae |
Acer platanoides L. |
Norway maple |
|
| 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 |
|
| Acoraceae |
Acorus americanus (Raf.) Raf. |
sweet-flag |
|
| Acoraceae |
Acorus calamus L. |
sweet-flag |
|
| Alismataceae |
Alisma subcordatum Raf. |
American water-plantain, common water-plantain, southern water-plantain |
|
| Alismataceae |
Alisma triviale Pursh |
northern water-plantain |
|
| Alismataceae |
Sagittaria cristata Engelm. |
crested arrow-head |
|
| Alismataceae |
Sagittaria latifolia Willd. |
broad-leaved arrow-head, common arrow-head, duck-potato, wapato |
|
| Alismataceae |
Sagittaria rigida Pursh |
sessile-fruited arrow-head, stiff arrow-head |
|
| Amaranthaceae |
Amaranthus albus L. |
prostrate pigweed, tumble pigweed, tumbleweed, tumbleweed amaranth, white amaranth |
|
| Amaranthaceae |
Amaranthus albus L. X A. blitoides S.Watson |
|
|
| Amaranthaceae |
Amaranthus blitoides S.Watson |
creeping amaranth, mat amaranth, matweed, matweed amaranth, prostratre amaranth, prostrate pigweed |
|
| Amaranthaceae |
Amaranthus powellii S.Watson |
green amaranth, Powell's amaranth, Powell's smooth amaranth, tall 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 |
|
| Anacardiaceae |
Rhus glabra L. |
smooth sumac |
|
| Anacardiaceae |
Rhus hirta (L.) Sudw. |
staghorn sumac, velvet sumac |
|
| Anacardiaceae |
Toxicodendron radicans (L.) Kuntze subsp. negundo (Greene) Gillis |
common eastern poison-ivy, poison-ivy |
|
| Anacardiaceae |
Toxicodendron rydbergii (Small ex Rydb.) Greene |
Rydberg's poison-ivy, western poison-ivy |
|
| Anacardiaceae |
Toxicodendron vernix (L.) Kuntze |
poison sumac, swamp sumac |
|
| Apiaceae |
Angelica atropurpurea L. |
common great angelica, great angelica, purple-stem angelica |
|
| Apiaceae |
Angelica atropurpurea L. var. atropurpurea |
common great angelica, great angelica, purple-stem angelica |
|
| Apiaceae |
Berula erecta (Huds.) Coville |
cut-leaved water-parsnip, low water-parsnip |
|
| Apiaceae |
Carum carvi L. |
caraway |
|
| Apiaceae |
Cicuta bulbifera L. |
bulblet water-hemlock |
|
| Apiaceae |
Cicuta maculata L. |
common water-hemlock, spotted water-hemlock |
|
| Apiaceae |
Conioselinum chinense (L.) Britton, Sterns & Poggenb. |
Chinese hemlock-parsley, hemlock-parsley |
|
| Apiaceae |
Cryptotaenia canadensis (L.) DC. |
Canadian honewort, white chervil |
|
| Apiaceae |
Daucus carota L. |
Queen Anne's-lace, wild carrot |
|
| Apiaceae |
Eryngium yuccifolium Michx. |
button eryngo, rattlesnake-master |
|
| Apiaceae |
Heracleum lanatum Michx. |
American cow-parsnip |
|
| Apiaceae |
Osmorhiza claytonii (Michx.) C.B.Clarke |
bland sweet cicely, Clayton's sweet-root, hairy sweet cicely |
|
| Apiaceae |
Osmorhiza longistylis (Torr.) DC. |
anise-root, long-styled sweet cicely, long-styled sweet-root, smooth sweet cicely |
|
| Apiaceae |
Oxypolis rigidior (L.) Raf. |
common water-dropwort, stiff cowbane |
|
| Apiaceae |
Polytaenia nuttallii DC. |
Nuttall's prairie-parsley, prairie-parsley |
|
| Apiaceae |
Sanicula gregaria E.P.Bicknell |
clustered black snakeroot |
|
| Apiaceae |
Sanicula marilandica L. |
black snakeroot, Maryland sanicle |
|
| Apiaceae |
Sium suave Walter |
hemlock water-parsnip, water-parsnip |
|
| Apiaceae |
Taenidia integerrima (L.) Drude |
yellow-pimpernel |
|
| Apiaceae |
Zizia aptera (A.Gray) Fernald |
heart-leaved golden alexanders, heart-leaved meadow-parsnip |
|
| Apiaceae |
Zizia aurea (L.) W.D.J.Koch |
common golden alexanders, golden alexanders, golden zizia |
|
| Apocynaceae |
Apocynum androsaemifolium L. |
spreading dogbane |
|
| Apocynaceae |
Apocynum X floribundum Greene (pro sp.) |
hybrid dogbane, intermediate dogbane |
|