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Families: 113
Genera: 374
Species: 726 (species rank)
Total Taxa: 768 (including subsp. and var.)

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Aristida basiramea Engelm. ex Vasey - fork-tip three-awn grass
Aristida oligantha Michx. - plains three-awn grass
Bromus ciliatus L. - fringed brome
Bromus inermis Leyss. - smooth brome
Bromus tectorum L. - June grass
Cinna arundinacea L. - stout wood-reed
Dactylis glomerata L. - orchard grass
Dichanthelium latifolium (L.) Harvill - broad-leaved panic grass
Elymus canadensis L. - Great Plains wild-rye
Elymus diversiglumis Scribn. & Ball - unequal-glumed wild-rye
Glyceria grandis S.Watson - reed manna grass
Hordeum jubatum L. - squirrel-tail grass
Panicum virgatum L. - switch grass
Phalaris arundinacea L. - reed canary grass
Poa alsodes A.Gray - woodland bluegrass
Poa annua L. - speargrass
Poa compressa L. - wiregrass
Poa palustris L. - marsh bluegrass
Poa pratensis L. - Kentucky bluegrass
Sorghastrum nutans (L.) Nash - yellow Indian grass
Polygala sanguinea L. - purple milkwort
Fallopia scandens (L.) Holub - climbing false buckwheat
Persicaria maculosa Gray - spotted lady's-thumb
Polygonum ramosissimum - bushy knotweed
Polygonum tenue Michx. - slender knotweed
Rumex britannica L. - British dock
Rumex crispus L. - yellow dock
Rumex fueginus Phil. - Tierra del Fuego dock
Potamogeton amplifolius Tuck. - large-leaved pondweed
Potamogeton crispus L. - curly 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 pusillus L. - small pondweed
Potamogeton robbinsii Oakes - Robbins' pondweed
Potamogeton strictifolius A.Benn. - straight-leaved pondweed
Potamogeton zosteriformis Fernald - flat-stemmed pondweed
Zannichellia palustris L. - horned-pondweed
Androsace occidentalis Pursh - western rock jasmine
Lysimachia ciliata L. - fringed loosestrife
Lysimachia hybrida Michx. - river loosestrife
Primula mistassinica Michx. - Lake Mistassini primrose
Trientalis borealis Raf. - American starflower
Adiantum pedatum L. - northern maidenhair fern
Cheilanthes feei T.Moore - slender lip fern
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 pensylvanicus L.f. - Pennsylvania buttercup
Thalictrum dioicum L. - quicksilver-weed
Ceanothus herbaceus Raf. - prairie red-root
Frangula alnus Mill. - glossy buckthorn
Crataegus chrysocarpa Ashe - round-leaved hawthorn
Crataegus fluviatilis Sarg. - Fort Sheridan hawthorn
Crataegus holmesiana Ashe - Holmes' hawthorn
Crataegus macrosperma Ashe - eastern hawthorn
Dasiphora fruticosa (L.) Rydb. - shrubby five-fingers
Drymocallis arguta (Pursh) Rydb. - prairie cinquefoil tall cinquefoil tall potentilla
Geum canadense Jacq. - white avens
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
Rosa arkansana Porter - wild prairie rose
Rubus flagellaris Willd. - whiplash dewberry
Rubus occidentalis L. - black raspberry
Rubus pensilvanicus Poir. - Vicksburg blackberry
Rubus pubescens Raf. - dwarf red blackberry
Rubus setosus Bigelow - Wheeler's blackberry
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 deltoides - eastern cottonwood
Populus grandidentata Michx. - large-toothed aspen
Populus tremuloides Michx. - trembling aspen
Salix bebbiana Sarg. - long-beaked willow
Salix discolor Muhl. - pussy willow
Salix humilis Marshall - upland willow
Salix x rubens Schrank (pro sp.) - hybrid crack willow
Acer negundo L. - box elder
Acer nigrum F.Michx. - black maple
Acer saccharinum L. - soft maple
Heuchera richardsonii R.Br. - Richardson's alumroot
Mitella diphylla L. - two-leaf miterwort
Scrophularia lanceolata Pursh - lance-leaf figwort
Verbascum thapsus L. - giant mullein
Smilax ecirrhata S.Watson - upright carrion-flower
Smilax illinoensis Mangaly - Illinois greenbrier
Smilax lasioneura Hook. - hairy carrion-flower
Smilax tamnoides L. - hellfetter
Physalis heterophylla - clammy ground-cherry
Solanum dulcamara L. - deadly nightshade
Solanum ptychanthum Dunal - West Indian nightshade
Staphylea trifolia L. - American bladdernut
Taxus canadensis Marshall - ground-hemlock
Dirca palustris L. - rope-bark
Typha angustifolia L. - narrow-leaved cat-tail
Typha latifolia L. - common cat-tail
Typha X glauca Godr. - white 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
Laportea canadensis (L.) Wedd. - Canadian wood-nettle
Parietaria pensylvanica Muhl. ex Willd. - Pennsylvanian pellitory
Pilea pumila (L.) A.Gray - Canadian clearweed
Verbena hastata L. - swamp verbena
Verbena urticifolia L. - white vervain
Viola canadensis L. - tall white violet
Viola pedata f. rosea Sanders - bird's-foot violet
Viola pedatifida G.Don - prairie violet
Viola sagittata var. sagittata - arrow-leaved violet
Viola sororia Willd. - hairy wood violet
Vitis labrusca L. - fox grape
Vitis riparia Michx. - river bank grape