| 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 rubrum L. var. rubrum |
red maple |
|
| Rosaceae |
Agrimonia gryposepala Wallr. |
common agrimony, tall hairy agrimony |
|
| Poaceae |
Agrostis gigantea Roth |
redtop |
|
| Betulaceae |
Alnus incana (L.) Moench subsp. rugosa (Du Roi) R.T.Clausen |
mountain alder, speckled alder, swamp alder |
|
| Poaceae |
Alopecurus aequalis Sobol. |
short-awned foxtail |
|
| Amaranthaceae |
Amaranthus albus L. |
prostrate pigweed, tumble pigweed, tumbleweed, tumbleweed amaranth, white amaranth |
|
| Rosaceae |
Amelanchier laevis Wiegand |
Allegheny serviceberry, Allegheny shadblow, smooth serviceberry |
|
| Asteraceae |
Anaphalis margaritacea (L.) Benth. & Hook.f. |
pearly everlasting, western pearly everlasting |
|
| Ranunculaceae |
Anemone americana (DC.) H.Hara |
round-lobed hepatica |
|
| Ranunculaceae |
Anemone cylindrica A.Gray |
candle anemone, long-headed anemone, thimbleweed |
|
| Ranunculaceae |
Anemone quinquefolia L. var. quinquefolia |
nightcaps, wood anemone |
|
| 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 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 |
|
| Poaceae |
Anthoxanthum hirtum (Schrank) Y. Schouten & Veldkamp subsp. arcticum (J. Presl) G. Tucker |
northern sweet grass, vanilla grass |
|
| Brassicaceae |
Arabis glabra (L.) Bernh. |
tower mustard, tower rock-cress |
|
| Brassicaceae |
Arabis laevigata (Muhl. ex Willd.) Poir. var. laevigata |
smooth bank-cress, smooth rock-cress |
|
| Brassicaceae |
Arabis missouriensis Greene |
green rock-cress, Missouri rock-cress |
|
| Asteraceae |
Arctium minus Bernh. |
common burdock, lesser burdock |
|
| Araceae |
Arisaema dracontium (L.) Schott |
dragon-root, green dragon |
|
| Araceae |
Arisaema triphyllum (L.) Schott subsp. triphyllum |
Indian turnip, Jack-in-the-pulpit |
|
| Asteraceae |
Artemisia campestris L. subsp. caudata (Michx.) H.M.Hall & Clem. |
field sage-wort, field wormwood |
|
| Aristolochiaceae |
Asarum canadense L. |
Canadian wild-ginger, wild-ginger |
|
| Asclepiadaceae |
Asclepias syriaca L. |
common milkweed, silkweed |
|
| Asclepiadaceae |
Asclepias verticillata L. |
whorled milkweed |
|
| Asteraceae |
Aster borealis (Torr. & A.Gray) Prov. |
northern bog aster, rush aster |
|
| 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 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 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 |
Aster umbellatus Mill. |
flat-top aster, parasol aster, tall flat-topped white aster |
|
| Asteraceae |
Aster umbellatus Mill. var. pubens A.Gray |
hairy flat-top aster, parasol aster |
|
| Dryopteridaceae |
Athyrium filix-femina (L.) Roth ex Mert. var. angustum (Willd.) G.Lawson |
common lady fern, lady fern, northeastern lady fern, northern lady fern |
|
| Betulaceae |
Betula papyrifera Marshall |
canoe birch, paper birch, white birch |
|
| Asteraceae |
Bidens cernua L. |
nodding beggar-ticks, nodding bur-marigold |
|
| Asteraceae |
Bidens frondosa L. |
common beggar-ticks, devil's beggar-ticks |
|
| Urticaceae |
Boehmeria cylindrica (L.) Sw. |
small-spike false nettle |
|
| Ophioglossaceae |
Botrychium dissectum Spreng. |
cut-leaved grape fern, dissected grape fern, lace-frond grape fern |
|
| Ophioglossaceae |
Botrychium matricariifolium (Döll) A.Braun ex W.D.J.Koch |
daisy-leaf grape fern, daisy-leaf moonwort, matricary grape fern |
|
| Ophioglossaceae |
Botrychium multifidum (S.G.Gmel.) Rupr. |
leathery grape fern, leather-leaved grape fern |
|