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Families: 81
Genera: 94
Species: 154 (species rank)
Total Taxa: 155 (including subsp. and var.)

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Acalypha rhomboidea
three-seeded-mercury
Agalinis paupercula
smooth false foxglove
Agalinis paupercula var. borealis
smooth false foxglove
Amaranthus albus
white amaranth
Amaranthus blitoides
prostrate pigweed
Amaranthus powellii
tall amaranth
Amaranthus retroflexus
wild-beet amaranth
Anaphalis margaritacea
western pearly everlasting
Anthemis cotula
stinking-cotula
Arctium minus
lesser burdock
Aster borealis
slender white bog aster
Aster ericoides
white heath aster
Aster laevis var. laevis
smooth blue aster
Aster lateriflorus
side-flowering aster
Aster linariifolius
stiff aster
Aster macrophyllus
large-leaved aster
Aster novae-angliae
New England aster
Aster oblongifolius
oblong-leaved aster
Aster oolentangiensis
sky-blue aster
Aster pilosus
white old-field aster
Aster puniceus
swamp aster
Aster sagittifolius
white arrowleaf aster
Aster sericeus
western silvery aster
Atriplex patula
spear saltbush
Berteroa incana
hoary-alyssum
Bidens cernua
nodding bur-marigold
Bidens coronata
tall swamp marigold
Bidens vulgata
tall beggar-ticks
Brassica nigra
black mustard
Campanula rapunculoides
rover bellflower
Capsella bursa-pastoris
shepherd's-purse
Carduus acanthoides
spiny plumeless thistle
Carduus nutans
nodding thistle
Centaurea biebersteinii
spotted knapweed
Chamaesyce nutans
nodding spurge
Chenopodium simplex
maple-leaved goosefoot
Cirsium arvense
field thistle
Cirsium discolor
prairie thistle
Cirsium muticum
swamp thistle
Cirsium vulgare
common thistle
Crepis tectorum
narrow-leaved hawk's-beard
Echinacea pallida
prairie coneflower
Echinacea purpurea
eastern purple coneflower
Epifagus virginiana
cancer-root
Epilobium coloratum
eastern willow-herb
Erigeron strigosus
rough fleabane
Erysimum cheiranthoides
worm-seed wallflower
Eupatorium maculatum
spotted Joe-Pye-weed
Euthamia gymnospermoides
viscid grass-leaved goldenrod
Froelichia floridana
plains snake-cotton
Froelichia gracilis
small cotton-weed
Galinsoga quadriradiata
shaggy-soldier
Gentiana andrewsii var. andrewsii
prairie closed gentian
Gentiana puberulenta
prairie gentian
Gentianopsis crinita
greater fringed gentian
Gentianopsis procera
small fringed gentian
Geranium robertianum
Robert's geranium
Gratiola aurea
yellow hedge-hyssop
Gratiola neglecta
clammy hedge-hyssop
Helianthus giganteus
tall sunflower
Helianthus grosseserratus
saw-tooth sunflower
Helianthus strumosus
rough-leaved sunflower
Helianthus tuberosus
woodland sunflower
Hieracium kalmii
northern hawkweed
Iva xanthifolia
giant sump-weed
Lamium amplexicaule
dead-nettle
Lespedeza capitata
round-headed lespedeza
Liatris aspera
rough gayfeather
Linaria dalmatica
Dalmatian toadflax
Linaria vulgaris
butter-and-eggs
Lobelia inflata
Indian-tobacco
Malva moschata
musk mallow
Malva neglecta
common mallow
Mentha spicata
spearmint
Mimulus glabratus var. jamesii
round-leaved monkey-flower
Myosoton aquaticum
water chickweed
Oenothera biennis
common evening-primrose
Oenothera parviflora
small-flowered evening-primrose
Oxalis stricta
tall wood-sorrel
Parnassia glauca
fen grass-of-Parnassus
Pentaphylloides floribunda
shrubby five-fingers