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Families: 117
Genera: 455
Species: 975 (species rank)
Total Taxa: 1083 (including subsp. and var.)

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Euphorbia maculata L. - spotted sand-mat
Lathyrus latifolius L. - perennial pea-vine
Lathyrus palustris L. - slender-stem pea-vine
Lotus corniculatus L. - bird's-foot trefoil
Medicago lupulina L. - black medick
Melilotus albus Medik. - white sweet-clover
Melilotus officinalis (L.) Lam. - yellow sweet-clover
Securigera varia (L.) Lassen - purple crown-vetch
Trifolium arvense L. - rabbit-foot clover
Trifolium campestre Schreb. - pinnate hop clover
Trifolium hybridum L. - alsike clover
Trifolium repens L. - white clover
Vicia sativa - spring vetch
Vicia villosa Roth - winter vetch
Quercus alba L. - white oak
Quercus rubra L. - northern red oak
Gentiana andrewsii var. andrewsii - prairie closed gentian
Gentianopsis crinita (Froel.) Ma - greater fringed gentian
Geranium maculatum L. - wild geranium
Geranium robertianum L. - Robert's geranium
Ribes americanum Mill. - wild black currant
Ribes cynosbati L. - prickly wild gooseberry
Ribes glandulosum Grauer - skunk currant
Ribes hirtellum Michx. - swamp gooseberry
Ribes lacustre (Pers.) Poir. - spiny swamp currant
Ribes missouriense Nutt. - wild gooseberry
Ribes rubrum L. - garden red currant
Ribes triste Pall. - wild red currant
Myriophyllum sibiricum Kom. - short-spike water-milfoil
Myriophyllum spicatum L. - spike water-milfoil
Myriophyllum verticillatum L. - whorled water-milfoil
Hamamelis virginiana L. - American witch-hazel
Elodea canadensis Michx. - common waterweed
Hypericum ascyron L. - great St. John's-wort
Hypericum majus (A.Gray) Britton - larger Canadian St. John's-wort
Hypericum perforatum L. - St. John's-wort
Hypericum punctatum Lam. - spotted St. John's-wort
Triadenum fraseri (Spach) Gleason - Fraser's marsh St. John's-wort
Iris pseudacorus L. - yellow water iris
Iris versicolor L. - northern blue flag
Sisyrinchium sp. L. - Blue-Eyed-Grass
Sisyrinchium angustifolium Mill. - stout blue-eyed-grass
Sisyrinchium montanum Greene - strict blue-eyed grass
Carya ovata var. ovata - shellbark hickory
Juglans cinerea L. - white walnut
Juncus alpinoarticulatus Chaix - northern green rush
Juncus bufonius L. - toad rush
Juncus canadensis J.Gay - Canadian rush
Juncus compressus Jacq. - round-fruited rush
Juncus dudleyi Wiegand - Dudley's rush
Juncus effusus L. - soft rush
Juncus filiformis L. - thread rush
Juncus nodosus L. - knotted rush
Juncus tenuis Willd. - roadside rush
Juncus torreyi Coville - Torrey's rush
Luzula acuminata Raf. - hairy wood rush
Triglochin palustris L. - slender bog arrow-grass
Galeopsis tetrahit L. - hemp-nettle
Lamium maculatum L. - variegated dead-nettle
Lycopus uniflorus Michx. - northern water-horehound
Mentha aquatica L. - water mint
Monarda fistulosa - wild bergamot
Scutellaria lateriflora L. - mad-dog skullcap
Utricularia subulata L. - zigzag bladderwort
Utricularia vulgaris L. - great bladderwort
Erythronium albidum Nutt. - white trout-lily
Erythronium americanum - yellow trout-lily
Lilium michiganense Farw. - Turk's-cap lily
Medeola virginiana L. - Indian cucumber-root
Lindernia dubia (L.) Pennell - moist bank pimpernel
Lycopodium clavatum L. - staghorn club-moss
Lythrum salicaria L. - spiked loosestrife
Hibiscus trionum L. - flower-of-an-hour
Malva moschata L. - musk mallow
Malva neglecta Wallr. - common mallow
Trillium cernuum L. - whip-poor-will flower
Menispermum canadense L. - common moonseed
Menyanthes trifoliata L. - common buckbean
Mollugo verticillata L. - Indian chickweed
Claytonia virginica L. - Virginia spring-beauty
Morus alba L. - white mulberry
Myrica gale L. - sweet gale
Nuphar variegata Durand - bull-head pond-lily
Syringa vulgaris L. - common lilac
Circaea alpina subsp. alpina - small enchanter's-nightshade
Circaea canadensis (L.) Hill - broad-leaf enchanter's-nightshade
Circaea canadensis subsp. canadensis (L.) Hill - broad-leaf enchanter's-nightshade
Epilobium ciliatum Raf. - hairy willow-herb
Epilobium coloratum Biehler - eastern willow-herb
Epilobium hirsutum L. - codlins-and-cream
Epilobium leptophyllum Raf. - fen willow-herb
Oenothera biennis L. - common evening-primrose
Oenothera parviflora L. - small-flowered evening-primrose
Oenothera perennis L. - small sundrops
Oenothera villosa subsp. villosa - hairy evening-primrose
Cypripedium acaule Aiton - small pink lady's-slipper
Cypripedium parviflorum Salisb. - yellow lady's-slipper
Cypripedium reginae Walter - showy lady's-slipper
Goodyera repens (L.) R.Br. - lesser rattlesnake-plantain
Liparis loeselii (L.) Rich. - Loesel's twayblade
Malaxis unifolia Michx. - green adder's-mouth
Platanthera huronensis (Nutt.) Lindl. - tall nothern bog orchid
Platanthera psycodes (L.) Lindl. - lesser purple fringed orchid
Spiranthes cernua (L.) Rich. - nodding lady's-tresses
Agalinis tenuifolia (Vahl) Raf. - common false foxglove
Melampyrum lineare Desr. - narrow-leaved cow-wheat
Orobanche fasciculata Nutt. - clustered broom-rape
Osmunda cinnamomea L. - cinnamon fern
Osmunda claytoniana L. - interrupted fern
Oxalis dillenii Jacq. - southern yellow wood-sorrel
Oxalis stricta L. - tall wood-sorrel
Corydalis aurea - scrambled eggs
Dicentra cucullaria (L.) Bernh. - Dutchman's-breeches
Papaver rhoeas L. - Shirley's poppy
Penthorum sedoides L. - ditch stonecrop
Phryma leptostachya L. - American lop-seed
Pinus strobus L. - eastern white pine
Callitriche palustris L. - vernal water-starwort
Chelone glabra L. - white turtlehead
Linaria vulgaris Mill. - butter-and-eggs
Penstemon digitalis Nutt. ex Sims - tall white beard-tongue
Penstemon pallidus Small - eastern white beard-tongue
Plantago patagonica Jacq. - woolly plantain
Plantago rugelii Decne. - Rugel's plantain
Veronica arvensis L. - corn speedwell
Veronica scutellata L. - skullcap speedwell
Veronica verna L. - spring speedwell
Agrostis stolonifera L. - creeping tickle grass
Alopecurus aequalis Sobol. - short-awned foxtail
Alopecurus pratensis L. - meadow foxtail
Bromus ciliatus L. - fringed brome
Bromus inermis Leyss. - smooth brome
Bromus kalmii A.Gray - prairie brome
Bromus pubescens Muhl. ex Willd. - hairy woodland 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 curvatus Piper - awnless wild-rye
Elymus hystrix L. - glumeless wild-rye
Elymus riparius Wiegand - eastern riverbank wild-rye
Festuca rubra L. - red fescue
Glyceria borealis (Nash) Batch. - boreal manna grass
Glyceria grandis S.Watson - reed manna grass
Hordeum jubatum L. - squirrel-tail grass
Hordeum vulgare L. - common barley
Lolium perenne L. - perennial rye grass
Milium effusum L. - wood millet
Panicum capillare - witch grass
Panicum virgatum L. - switch grass
Paspalum setaceum Michx. - thin paspalum
Phalaris arundinacea L. - reed canary grass
Poa alsodes A.Gray - woodland bluegrass
Poa annua L. - speargrass
Poa compressa L. - wiregrass
Poa languida Hitchc. - weak bluegrass
Poa paludigena Fernald & Wiegand - Patterson's bluegrass
Poa palustris L. - fowl meadow grass
Poa pratensis L. - Kentucky bluegrass
Poa trivialis L. - rough bluegrass
Setaria faberi R.A.W.Herrm. - nodding foxtail
Collomia linearis Nutt. - narrow-leaved mountain trumpet
Phlox divaricata - woodland phlox
Polygala sanguinea L. - purple milkwort
Persicaria maculosa Gray - spotted lady's-thumb
Rumex acetosella L. - sheep sorrel
Rumex crispus L. - yellow dock
Rumex fueginus Phil. - Tierra del Fuego dock
Rumex obtusifolius L. - bitter dock
Rumex patientia L. - patience dock
Potamogeton amplifolius Tuck. - large-leaved pondweed
Potamogeton crispus L. - curly pondweed
Potamogeton foliosus - leafy pondweed
Potamogeton friesii Rupr. - Fries's 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
Lysimachia ciliata L. - fringed loosestrife
Lysimachia thyrsiflora L. - tufted loosestrife
Primula mistassinica Michx. - Lake Mistassini primrose
Trientalis borealis Raf. - American starflower
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
Coptis trifolia (L.) Salisb. - three-leaved gold-thread
Enemion biternatum Raf. - false rue anemone
Ranunculus abortivus L. - small-flowered buttercup
Ranunculus acris L. - tall buttercup
Ranunculus flabellaris Raf. - yellow water crowfoot
Ranunculus hispidus Michx. - rough buttercup
Ranunculus pensylvanicus L.f. - Pennsylvania buttercup
Ranunculus repens L. - creeping buttercup
Ranunculus sceleratus L. - cursed crowfoot
Thalictrum dioicum L. - quicksilver-weed
Reseda lutea L. - yellow mignonette
Ceanothus herbaceus Raf. - prairie red-root
Agrimonia gryposepala Wallr. - tall hairy agrimony
Amelanchier laevis Wiegand - smooth serviceberry
Amelanchier sanguinea - round-leaved serviceberry
Comarum palustre L. - purple marshlocks
Crataegus holmesiana Ashe - Holmes' hawthorn
Crataegus intricata Lange - Copenhagen hawthorn
Crataegus lumaria Ashe - roundleaf hawthorn
Crataegus macrosperma Ashe - eastern hawthorn
Crataegus scabrida Sarg. - rough hawthorn
Crataegus schuettei Ashe - royal hawthorn
Fragaria vesca - woodland strawberry
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 pumila L. - sand cherry
Prunus serotina Ehrh. - wild black cherry
Prunus virginiana L. - chokecherry
Rosa blanda Aiton - meadow roae
Rubus canadensis L. - smooth highbush blackberry
Rubus flagellaris Willd. - rambling dewberry
Rubus occidentalis L. - black raspberry
Rubus parviflorus Nutt. - western thimbleberry
Rubus pensilvanicus Poir. - Vicksburg blackberry
Rubus pubescens Raf. - dwarf red blackberry
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 lanceolatum Torr. - wild licorice
Galium tinctorium L. - stiff bedstraw
Galium trifidum L. - small bedstraw
Galium triflorum Michx. - sweet-scented bedstraw
Mitchella repens L. - partridgeberry
Zanthoxylum americanum Mill. - northern prickly-ash
Populus deltoides - eastern cottonwood
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 lucida Muhl. - shining willow