| Family |
Taxon |
Common Name | Photographs |
| Asteraceae |
Achillea millefolium L. |
common yarrow, milfoil |
|
| Scrophulariaceae |
Agalinis tenuifolia (Vahl) Raf. |
common agalinis, common false foxglove |
|
| Poaceae |
Agropyron cristatum (L.) Gaertn. |
desert wheat grass |
|
| Poaceae |
Agrostis gigantea Roth |
redtop |
|
| Alismataceae |
Alisma subcordatum Raf. |
American water-plantain, common water-plantain, southern water-plantain |
|
| Amaranthaceae |
Amaranthus albus L. |
prostrate pigweed, tumble pigweed, tumbleweed, tumbleweed amaranth, white amaranth |
|
| Rosaceae |
Amelanchier sanguinea (Pursh) DC. var. sanguinea |
low shadblow, New England serviceberry, round-leaved serviceberry |
|
| Fabaceae |
Amorpha canescens Pursh |
lead-plant |
|
| Asteraceae |
Anaphalis margaritacea (L.) Benth. & Hook.f. |
pearly everlasting, western pearly everlasting |
|
| Poaceae |
Andropogon gerardii Vitman |
big blue-stem, turkey-foot |
|
| Asteraceae |
Antennaria howellii Greene |
Howell's pussy-toes |
|
| Asteraceae |
Antennaria howellii Greene subsp. canadensis (Greene) R.J.Bayer |
Canadian 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 |
|
| Asteraceae |
Antennaria parlinii Fernald subsp. parlinii |
Parlin's pussy-toes, plantain pussy-toes |
|
| Apocynaceae |
Apocynum androsaemifolium L. |
spreading dogbane |
|
| Apocynaceae |
Apocynum X floribundum Greene (pro sp.) |
hybrid dogbane, intermediate dogbane |
|
| Ranunculaceae |
Aquilegia canadensis L. |
Canadian columbine, red columbine, wild columbine |
|
| Brassicaceae |
Arabis lyrata L. |
lyrate rock-cress, sand cress |
|
| Araliaceae |
Aralia hispida Vent. |
bristly sarsaparilla |
|
| Araliaceae |
Aralia nudicaulis L. |
wild sarsaparilla |
|
| Poaceae |
Aristida basiramea Engelm. ex Vasey |
fork-tip three-awn grass |
|
| Rosaceae |
Aronia X prunifolia (Marshall) Rehder (pro sp.) |
black chokecherry, hybrid chokeberry |
|
| Rosaceae |
Aronia melanocarpa (Michx.) Elliott |
black chokeberry |
|
| Asteraceae |
Artemisia campestris L. subsp. caudata (Michx.) H.M.Hall & Clem. |
field sage-wort, field wormwood |
|
| Asclepiadaceae |
Asclepias lanuginosa Nutt. |
side-cluster milkweed, woolly milkweed |
|
| Asclepiadaceae |
Asclepias ovalifolia Decne. |
dwarf milkweed, oval milkweed, oval-leaved milkweed |
|
| Asteraceae |
Aster lanceolatus Willd. |
eastern lined aster, panicled aster, white panicle aster |
|
| Asteraceae |
Aster lanceolatus Willd. var. lanceolatus |
eastern lined aster, marsh aster, panicled aster, white panicle aster |
|
| Asteraceae |
Aster lanceolatus Willd. X A. lateriflorus (L.) Britton |
|
|
| Asteraceae |
Aster lanceolatus Willd. X A. pilosus Willd. |
|
|
| Asteraceae |
Aster lanceolatus Willd. X A. puniceus L. |
|
|
| Asteraceae |
Aster lanceolatus Willd. X A. sagittifolius Wedem. ex Willd. |
|
|
| Asteraceae |
Aster lateriflorus (L.) Britton |
calico aster, goblet aster, side-flowering aster |
|
| Asteraceae |
Aster lateriflorus (L.) Britton var. hirsuticaulis (Lindl. ex DC.) Porter |
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 oolentangiensis Riddell |
azure aster, prairie heart-leaved aster, sky-blue 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 |
|
| Scrophulariaceae |
Aureolaria pedicularia (L.) Raf. |
annual false foxglove, clammy false foxglove |
|
| Scrophulariaceae |
Aureolaria pedicularia (L.) Raf. var. ambigens (Fernald) Farw. |
annual false foxglove, clammy false foxglove, fern-leaf yellow false foxglove |
|
| Fabaceae |
Baptisia bracteata Muhl. ex Elliott var. glabrescens (Larisey) Isely |
cream wild indigo, long-bracted wild indigo, plains wild indigo |
|
| Gentianaceae |
Bartonia virginica (L.) Britton, Sterns & Poggenb. |
Virginia bartonia, yellow screw-stem |
|
| Betulaceae |
Betula nigra L. |
black birch, red birch, river birch |
|
| Betulaceae |
Betula papyrifera Marshall |
canoe birch, paper birch, white birch |
|
| Betulaceae |
Betula pumila L. |
bog birch, dwarf birch, swamp birch |
|
| Asteraceae |
Bidens connata Muhl. ex Willd. |
purple-stem beggar-ticks, purple-stemmed tickseed |
|