| Taxon |
Family |
Common Name |
Photograph |
| Achillea millefolium L. |
Asteraceae |
common yarrow, milfoil |
|
| Achillea millefolium L. subsp. lanulosa (Nutt.) Piper |
Asteraceae |
common yarrow, milfoil |
|
| Achillea millefolium L. subsp. millefolium |
Asteraceae |
common yarrow, milfoil |
|
| Achillea ptarmica L. |
Asteraceae |
sneezeweed, sneezewort |
|
| Aconitum columbianum Nutt. subsp. columbianum |
Ranunculaceae |
Columbian monk's-hood |
|
| Actaea pachypoda Elliott |
Ranunculaceae |
doll's-eyes, white baneberry |
|
| Actaea rubra (Aiton) Willd. |
Ranunculaceae |
red baneberry |
|
| Actaea X ludovici B.Boivin |
Ranunculaceae |
hybrid actaea |
|
| Adoxa moschatellina L. |
Adoxaceae |
moschatel, musk-root |
|
| Aegopodium podagraria L. |
Apiaceae |
bishop's gout-weed, gout-weed |
|
| Aethusa cynapium L. |
Apiaceae |
fool's-parsley |
|
| Aletris farinosa L. |
Liliaceae |
unicorn root, white colic-root, white stargrass |
|
| Alliaria petiolata (M.Bieb.) Cavara & Grande |
Brassicaceae |
garlic mustard |
|
| Allium canadense L. var. canadense |
Liliaceae |
meadow garlic, wild garlic, wild onion |
|
| Allium cepa L. |
Liliaceae |
cultivated onion, garden onion |
|
| Allium cernuum Roth |
Liliaceae |
nodding wild onion |
|
| Allium sativum L. var. sativum |
Liliaceae |
cultivated garlic |
|
| Allium stellatum Ker Gawl. |
Liliaceae |
Autumn onion, prairie onion, wild onion |
|
| Allium tricoccum Sol. |
Liliaceae |
ramp, wild leek |
|
| Allium tricoccum Sol. var. burdickii Hanes |
Liliaceae |
narrow-leaved wild leek, wild leek |
|
| Allium tricoccum Sol. var. tricoccum |
Liliaceae |
ramp, wild leek |
|
| Allium tuberosum Rottler ex Spreng. |
Liliaceae |
Chinese chives |
|
| Amaranthus albus L. |
Amaranthaceae |
prostrate pigweed, tumble pigweed, tumbleweed, tumbleweed amaranth, white amaranth |
|
| Amaranthus albus L. X A. blitoides S.Watson |
Amaranthaceae |
|
|
| Amaranthus arenicola I.M.Johnst. |
Amaranthaceae |
sand amaranth, sand-hills amaranth |
|
| Amaranthus blitoides S.Watson |
Amaranthaceae |
creeping amaranth, mat amaranth, matweed, matweed amaranth, prostratre amaranth, prostrate pigweed |
|
| Ammannia robusta Heer & Regel |
Lythraceae |
grand red-stem, sessile tooth-cup |
|
| Anaphalis margaritacea (L.) Benth. & Hook.f. |
Asteraceae |
pearly everlasting, western pearly everlasting |
|
| Androsace occidentalis Pursh |
Primulaceae |
rock-jasmine, western androsace |
|
| Anemone acutiloba (DC.) G.Lawson |
Ranunculaceae |
sharp-lobed hepatica |
|
| Anemone americana (DC.) H.Hara |
Ranunculaceae |
round-lobed hepatica |
|
| Anemone canadensis L. |
Ranunculaceae |
Canada anemone, Canadian anemone, meadow anemone |
|
| Anemone caroliniana Walter |
Ranunculaceae |
Carolina anemone, prairie anemone |
|
| Anemone cylindrica A.Gray |
Ranunculaceae |
candle anemone, long-headed anemone, thimbleweed |
|
| Anemone multifida Poir. var. multifida |
Ranunculaceae |
cut-leaved anemone, early anemone, Pacific anemone |
|
| Anemone quinquefolia L. var. quinquefolia |
Ranunculaceae |
nightcaps, wood anemone |
|
| Anemone virginiana L. var. alba (Oakes) A.W.Wood |
Ranunculaceae |
tall anemone, thimbleweed |
|
| Anemone virginiana L. var. virginiana |
Ranunculaceae |
tall anemone, tall thimbleweed |
|
| Angelica atropurpurea L. |
Apiaceae |
common great angelica, great angelica, purple-stem angelica |
|
| Angelica atropurpurea L. var. atropurpurea |
Apiaceae |
common great angelica, great angelica, purple-stem angelica |
|
| Angelica atropurpurea L. var. occidentalis Fassett |
Apiaceae |
purple-stem angelica, western great angelica |
|
| Antennaria howellii Greene |
Asteraceae |
Howell's pussy-toes |
|
| Antennaria howellii Greene subsp. canadensis (Greene) R.J.Bayer |
Asteraceae |
Canadian pussy-toes, Howell's pussy-toes |
|
| Antennaria howellii Greene subsp. neodioica (Greene) R.J.Bayer |
Asteraceae |
field pussy-toes, Howell's pussy-toes |
|
| Antennaria howellii Greene subsp. petaloidea (Fernald) R.J.Bayer |
Asteraceae |
Howell's pussy-toes, small pussy-toes |
|
| Antennaria neglecta Greene |
Asteraceae |
cat's-foot, field pussy-toes |
|
| Antennaria parlinii Fernald |
Asteraceae |
Parlin's pussy-toes, plantain pussy-toes |
|
| Antennaria parlinii Fernald subsp. fallax (Greene) R.J.Bayer & Stebbins |
Asteraceae |
Parlin's pussy-toes, plantain pussy-toes |
|
| Antennaria parlinii Fernald subsp. parlinii |
Asteraceae |
Parlin's pussy-toes, plantain pussy-toes |
|
| Antennaria plantaginifolia (L.) Richardson |
Asteraceae |
plantain pussy-toes, plantain-leaved pussy-toes, woman's-tobacco |
|