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Families: 124
Genera: 493
Species: 1168 (species rank)
Total Taxa: 1267 (including subsp. and var.)

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Polygala sanguinea L. - purple milkwort
Polygala senega L. - senega root
Fallopia scandens (L.) Holub - climbing false buckwheat
Persicaria maculosa Gray - spotted lady's-thumb
Polygonum tenue Michx. - slender knotweed
Rumex acetosella L. - sheep sorrel
Rumex britannica L. - British dock
Rumex crispus L. - yellow dock
Pontederia cordata L. - pickerel-weed
Potamogeton amplifolius Tuck. - large-leaved pondweed
Potamogeton crispus L. - curly pondweed
Potamogeton epihydrus Raf. - ribbon-leaved pondweed
Potamogeton friesii Rupr. - Fries's pondweed
Potamogeton gramineus L. - variable-leaved pondweed
Potamogeton illinoensis Morong - Illinois pondweed
Potamogeton natans L. - floating-leaf pondweed
Potamogeton nodosus Poir. - long-leaved pondweed
Potamogeton praelongus Wulfen - white-stemmed pondweed
Potamogeton robbinsii Oakes - Robbins' pondweed
Potamogeton strictifolius A.Benn. - straight-leaved pondweed
Potamogeton zosteriformis Fernald - flat-stemmed pondweed
Zannichellia palustris L. - horned-pondweed
Lysimachia ciliata L. - fringed loosestrife
Lysimachia nummularia L. - creeping jenny
Lysimachia punctata L. - spotted loosestrife
Lysimachia quadriflora Sims - smooth loosestrife
Lysimachia quadrifolia L. - whorled yellow loosestrife
Lysimachia thyrsiflora L. - tufted loosestrife
Adiantum pedatum L. - northern maidenhair fern
Actaea pachypoda Elliott - white baneberry
Anemone acutiloba (DC.) G.Lawson - sharp-lobed hepatica
Anemone americana (DC.) H.Hara - round-lobed hepatica
Anemone canadensis L. - meadow anemone
Anemone virginiana L. - tall thimbleweed
Aquilegia canadensis L. - wild columbine
Caltha palustris L. - yellow marsh-marigold
Clematis virginiana L. - virgin's-bower
Enemion biternatum Raf. - false rue anemone
Ranunculus abortivus L. - small-flowered buttercup
Ranunculus flabellaris Raf. - yellow water crowfoot
Ranunculus hispidus Michx. - rough buttercup
Ranunculus pensylvanicus L.f. - Pennsylvania buttercup
Ranunculus sceleratus L. - cursed crowfoot
Thalictrum dioicum L. - quicksilver-weed
Thalictrum revolutum DC. - waxy meadow-rue
Frangula alnus Mill. - glossy buckthorn
Rhamnus alnifolia L'Hér. - alder-leaf buckthorn
Rhamnus cathartica L. - European buckthorn
Agrimonia gryposepala Wallr. - tall hairy agrimony
Amelanchier laevis Wiegand - smooth serviceberry
Amelanchier sanguinea - round-leaved serviceberry
Crataegus dodgei Ashe - Dodge's hawthorn
Crataegus holmesiana Ashe - Holmes' hawthorn
Crataegus lumaria Ashe - roundleaf hawthorn
Crataegus macrosperma Ashe - eastern hawthorn
Crataegus magniflora Sarg. - shining-branch hawthorn
Crataegus schuettei Ashe - royal hawthorn
Crataegus submollis Sarg. - northern red haw
Dasiphora fruticosa (L.) Rydb. - shrubby five-fingers
Drymocallis arguta (Pursh) Rydb. - prairie cinquefoil tall cinquefoil tall potentilla
Geum aleppicum Jacq. - yellow avens
Geum canadense Jacq. - white avens
Geum rivale L. - water avens
Malus ioensis - prairie crabapple
Malus pumila Mill. - orchard apple
Potentilla argentea L. - silvery five-fingers
Potentilla norvegica L. - strawberry-weed
Potentilla recta L. - sulphur five-fingers
Potentilla simplex Michx. - old-field cinquefoil
Prunus nigra Aiton - Canadian plum
Prunus serotina Ehrh. - wild black cherry
Prunus virginiana L. - chokecherry
Pyrus communis L. - common pear
Rosa blanda Aiton - meadow roae
Rosa carolina L. - pasture rose
Rubus flagellaris Willd. - rambling dewberry
Rubus hispidus L. - swamp dewberry
Rubus occidentalis L. - black raspberry
Rubus pensilvanicus Poir. - Vicksburg blackberry
Rubus pubescens Raf. - dwarf red blackberry
Rubus setosus Bigelow - Wheeler's blackberry
Sorbus americana Marshall - American mountain ash
Sorbus aucuparia L. - European mountain ash
Spiraea alba var. alba - white meadowsweet
Galium aparine L. - sticky-willy
Galium asprellum Michx. - rough bedstraw
Galium boreale L. - northern bedstraw
Galium tinctorium L. - stiff bedstraw
Galium triflorum Michx. - sweet-scented bedstraw
Houstonia longifolia Gaertn. - long-leaved bluets
Zanthoxylum americanum Mill. - northern prickly-ash
Populus alba L. - white poplar
Populus grandidentata Michx. - large-toothed aspen
Populus tremuloides Michx. - trembling aspen
Salix amygdaloides Andersson - peach-leaved willow
Salix bebbiana Sarg. - long-beaked willow
Salix discolor Muhl. - pussy willow
Salix interior Rowlee - sandbar willow
Salix myricoides Muhl. - blue-leaf willow
Salix nigra Marshall - black willow
Salix pentandra L. - laurel willow
Salix petiolaris Sm. - slender willow
Salix purpurea L. - purple willow
Salix x fragilis L. - crack willow
Acer ginnala Maxim. - Amur maple
Acer negundo L. - box elder
Acer nigrum F.Michx. - black maple
Acer platanoides L. - Norway maple
Acer saccharinum L. - soft maple
Acer spicatum Lam. - mountain maple
Heuchera richardsonii R.Br. - Richardson's alumroot
Mitella diphylla L. - two-leaf miterwort
Mitella nuda L. - small bishop's-cap
Scrophularia lanceolata Pursh - lance-leaf figwort
Verbascum blattaria L. - moth mullein
Verbascum thapsus L. - giant mullein
Selaginella eclipes W.R.Buck - northern meadow spike-moss
Smilax ecirrhata S.Watson - upright carrion-flower
Smilax illinoensis Mangaly - Illinois greenbrier
Smilax lasioneura Hook. - hairy carrion-flower
Physalis virginiana var. virginiana - Virginia ground-cherry
Solanum dulcamara L. - deadly nightshade
Solanum ptychanthum Dunal - West Indian nightshade
Staphylea trifolia L. - American bladdernut
Dirca palustris L. - rope-bark
Triantha glutinosa (Michx.) Baker - sticky false asphodel
Sparganium emersum Rehmann - narrow-leaved bur-reed
Typha angustifolia L. - narrow-leaved cat-tail
Typha latifolia L. - common cat-tail
Ulmus americana L. - white elm
Ulmus pumila L. - Siberian elm
Ulmus rubra Muhl. - slippery elm
Boehmeria cylindrica (L.) Sw. - small-spike false nettle
Parietaria pensylvanica Muhl. ex Willd. - Pennsylvanian pellitory
Pilea fontana (Lunell) Rydb. - lesser clearweed
Pilea pumila (L.) A.Gray - Canadian clearweed
Verbena bracteata Lag. & Rodr. - prostrate vervain
Verbena hastata L. - swamp verbena
Verbena stricta Vent. - hoary vervain
Viola affinis Leconte - sand violet
Viola cucullata Aiton - marsh blue violet
Viola nephrophylla Greene - northern bog violet
Viola odorata L. - sweet violet
Viola pedata L. - bird's-foot violet
Viola pedata f. rosea Sanders - bird's-foot violet
Viola pedatifida G.Don - prairie violet
Viola pubescens Aiton - yellow violet
Viola sagittata var. sagittata - arrow-leaved violet
Viola sororia Willd. - hairy wood violet
Viola striata Aiton - striped white violet
Vitis riparia Michx. - river bank grape