Families: 60
Genera: 213
Species: 382
Total Taxa: 395 (including subsp. and var.)
Abutilon theophrasti
velvet-leaf
Acalypha gracilens subsp. gracilens
slender three-seeded-mercury
Acalypha rhomboidea
three-seeded-mercury
Achillea millefolium
milfoil
Aconitum columbianum subsp. columbianum
Columbian monk's-hood
Adlumia fungosa
climbing fumitory
Agalinis aspera
tall false foxglove
Agalinis gattingeri
round-stemmed false foxglove
Agalinis paupercula
smooth false foxglove
Agalinis paupercula var. borealis
smooth false foxglove
Agalinis purpurea
smooth agalinis
Agalinis skinneriana
Skinner's false foxglove
Agalinis tenuifolia
common false foxglove
Agastache foeniculum
lavender giant hyssop
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Agastache scrophulariaefolia
purple giant hyssop
Agrimonia gryposepala
tall hairy agrimony
Agrostemma githago var. githago
corn cockle
Alisma subcordatum
southern water-plantain
Allium cernuum
nodding wild onion
Allium stellatum
wild onion
Amaranthus albus
prostrate pigweed
Amaranthus blitoides
prostrate pigweed
Amaranthus hybridus
smooth pigweed
Amaranthus powellii
tall amaranth
Amaranthus retroflexus
redroot amaranth
Amaranthus tuberculatus
tall water-hemp
Ambrosia artemisiifolia
short ragweed
Amphicarpaea bracteata
hog-peanut
Anaphalis margaritacea
western pearly everlasting
Anthemis cotula
stinking-cotula
Apocynum androsaemifolium
spreading dogbane
Arctium minus
lesser burdock
Arenaria serpyllifolia var. serpyllifolia
thyme-leaved sandwort
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Arenaria stricta
stiff sandwort
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Argentina anserina
silver-weed
Arnoglossum atriplicifolium
pale Indian-plantain
Arnoglossum reniforme
Muhlenberg's cacalia
Artemisia campestris subsp. caudata
field wormwood
Artemisia ludoviciana subsp. ludoviciana
white sage
Asclepias incarnata subsp. incarnata
swamp milkweed
Asclepias verticillata
whorled milkweed
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Aster borealis
slender white bog aster
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Aster ericoides
white heath aster
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Aster laevis var. laevis
smooth blue aster
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Aster lateriflorus
side-flowering aster
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Aster linariifolius
stiff aster
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Aster macrophyllus
large-leaved aster
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Aster novae-angliae
New England aster
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Aster oblongifolius
oblong-leaved aster
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Aster oolentangiensis
sky-blue aster
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Aster pilosus
white old-field aster
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Aster puniceus
swamp aster
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Aster sagittifolius
white arrowleaf aster
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Aster sericeus
western silvery aster
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Aster umbellatus
tall flat-topped white aster
Atriplex patula
spear saltbush
Aureolaria grandiflora var. pulchra
large-flowered yellow false foxglove
Aureolaria pedicularia
clammy false foxglove
Aureolaria pedicularia var. ambigens
fern-leaf yellow false foxglove
Berteroa incana
hoary-alyssum
Berula erecta
low water-parsnip
Bidens cernua
nodding bur-marigold
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Bidens coronata
tall swamp marigold
Bidens vulgata
tall beggar-ticks
Blephilia hirsuta var. hirsuta
hairy pagoda-plant
Boltonia asteroides var. recognita
white doll's-daisy
Bouteloua curtipendula var. curtipendula
side-oats grama
Brassica juncea
Indian mustard
Brassica nigra
black mustard
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Calylophus serrulatus
yellow sundrops
Calystegia sepium
hedge false bindweed
Campanula aparinoides
marsh bellflower
Campanula aparinoides var. grandiflora
marsh bellflower
Campanula rapunculoides
rover bellflower
Campanula rotundifolia
harebell
Cannabis sativa
marijuana
Capsella bursa-pastoris
shepherd's-purse
Carduus acanthoides
spiny plumeless thistle
Carduus nutans
nodding thistle
Castilleja coccinea
scarlet painted-cup
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Centaurea biebersteinii
spotted knapweed
Cerastium fontanum subsp. vulgare
mouse-ear chickweed
Chaenorhinum minus
small snapdragon
Chamaecrista fasciculata
sleeping-plant
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Chamaesyce glyptosperma
ridge-seeded spurge
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Chamaesyce maculata
wart-weed
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Chamaesyce nutans
nodding spurge
Chasmanthium latifolium
wild oats
Chelone glabra
white turtlehead
Chenopodium album
lamb's quarters
Chenopodium capitatum var. capitatum
strawberry-blite
Chenopodium simplex
maple-leaved goosefoot
Cichorium intybus
chicory
Cicuta bulbifera
bulblet water-hemlock
Cirsium arvense
field thistle
Cirsium discolor
prairie thistle
Cirsium muticum
swamp thistle
Cirsium pitcheri
sand dune thistle
Cirsium vulgare
common thistle
Clinopodium vulgare
wild-basil
Collinsonia canadensis
stoneroot