water parsnip
Sium suave
Sium latifolium
greater water parsnip
Saururus cernuus
swamp lily
lizard's-tail
water dragon
Cardamine bulbosa
spring cress
rivulus
Erigeron annuus
daisy fleabane
nodding thistle
musk thistle
Carduus nutans
Northern snow bedstraw
Galium boreale
Northern bedstraw
prickle-weed
Desmanthus ilinoensis
prairie mimosa
brookweed
Alternanthera philoxeroides
edelweiss
alligator grass
alligator weed
western mugwort
cudweed
Artemisia ludoviciana
Artemisia gnaphalodes
prairie sage
white sage
horsemint
Allegheny mountain spurge
Allegheny spurge
Pachysandra procumbens
white mullein
Mentha longifolia
Aster dumosus
water arum
Calla palustris
bushy aster
Verbascum lychnitis
wild calla
genus Lysimachia
Lysimachia
American frogbit
Ranunculus aquatilis
water buttercup