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Families: 107
Genera: 379
Species: 855 (species rank)
Total Taxa: 955 (including subsp. and var.)

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Lycopus uniflorus Michx. - northern water-horehound
Monarda didyma L. - scarlet bee balm
Scutellaria lateriflora L. - mad-dog skullcap
Utricularia sp. - Bladderwort
Utricularia cornuta Michx. - naked bladderwort
Utricularia geminiscapa Benj. - twin-stemmed bladderwort
Utricularia gibba L. - humped bladderwort
Utricularia intermedia Hayne - northern bladderwort
Utricularia minor L. - small bladderwort
Utricularia purpurea Walter - spotted bladderwort
Utricularia vulgaris L. - great bladderwort
Diphasiastrum complanatum (L.) Holub - northern running-pine
Diphasiastrum x zeilleri (Rouy) Holub - Zeiller's running-pine
Lycopodiella inundata (L.) Holub - northern bog club-moss
Lycopodium clavatum L. - staghorn club-moss
Lythrum salicaria L. - spiked loosestrife
Malva moschata L. - musk mallow
Trillium cernuum L. - whip-poor-will flower
Menyanthes trifoliata L. - common buckbean
Mollugo verticillata L. - Indian chickweed
Myrica gale L. - sweet gale
Nuphar sp. - Yellow Water-Lily
Nuphar variegata Durand - bull-head pond-lily
Nuphar X rubrodisca Morong - intermediate pond-lily
Nymphaea odorata Aiton - fragrant water-lily
Syringa X persica L. - Persian lilac
Circaea alpina subsp. alpina - small enchanter's-nightshade
Epilobium ciliatum Raf. - hairy willow-herb
Epilobium coloratum Biehler - eastern willow-herb
Epilobium leptophyllum Raf. - fen willow-herb
Epilobium palustre L. - marsh willow-herb
Epilobium strictum Muhl. ex Spreng. - northeastern willow-herb
Oenothera biennis L. - common evening-primrose
Oenothera parviflora L. - small-flowered evening-primrose
Oenothera villosa subsp. villosa - hairy evening-primrose
Botrychium lanceolatum - triangle moonwort
Botrychium simplex E.Hitchc. - small grape fern
Sceptridium dissectum (Spreng.) Lyon - lace-frond grape fern
Arethusa bulbosa L. - swamp-pink
Cypripedium acaule Aiton - small pink lady's-slipper
Goodyera pubescens (Willd.) R.Br. - downy rattlesnake-plantain
Goodyera repens (L.) R.Br. - lesser rattlesnake-plantain
Goodyera tesselata Lodd. - tesselated rattlesnake-plantain
Malaxis unifolia Michx. - green adder's-mouth
Neottia cordata (L.) Rich. - heart-leaf twayblade
Platanthera clavellata (Michx.) Luer - small green fringed orchid
Platanthera huronensis (Nutt.) Lindl. - tall nothern bog orchid
Platanthera lacera (Michx.) G.Don - ragged fringed orchid
Platanthera orbiculata (Pursh) Lindl. - large round-leaved orchid
Spiranthes cernua (L.) Rich. - nodding lady's-tresses
Spiranthes lacera var. lacera - northern slender lady's-tresses
Spiranthes romanzoffiana Cham. - hooded lady's-tresses
Melampyrum lineare Desr. - narrow-leaved cow-wheat
Melampyrum lineare var. lineare - narrow-leaved cow-wheat
Osmunda cinnamomea L. - cinnamon fern
Osmunda claytoniana L. - interrupted fern
Oxalis dillenii Jacq. - southern yellow wood-sorrel
Oxalis stricta L. - tall wood-sorrel
Penthorum sedoides L. - ditch stonecrop
Pinus strobus L. - eastern white pine
Callitriche hermaphroditica L. - northern water-starwort
Callitriche palustris L. - vernal water-starwort
Chelone glabra L. - white turtlehead
Digitalis grandiflora Mill. - yellow foxglove
Digitalis lutea L. - straw foxglove
Digitalis purpurea L. - purple foxglove
Gratiola aurea Pursh - yellow hedge-hyssop
Gratiola neglecta Torr. - clammy hedge-hyssop
Hippuris vulgaris L. - mare's tail
Linaria dalmatica (L.) Mill. - Dalmatian toadflax
Linaria vulgaris Mill. - butter-and-eggs
Plantago rugelii Decne. - Rugel's plantain
Veronica chamaedrys L. - germander speedwell
Veronica longifolia L. - long-leaved speedwell
Veronica serpyllifolia L. - thyme-leaved speedwell
Veronica verna L. - spring speedwell
Agrostis stolonifera L. - creeping tickle grass
Alopecurus aequalis Sobol. - short-awned foxtail
Alopecurus pratensis L. - meadow foxtail
Anthoxanthum odoratum L. - sweet vernal grass
Bromus ciliatus L. - fringed brome
Bromus inermis Leyss. - smooth brome
Bromus kalmii A.Gray - prairie brome
Calamagrostis stricta (Timm) Koeler - slim-stem small reed grass
Dactylis glomerata L. - orchard grass
Dichanthelium latifolium (L.) Harvill - broad-leaved panic grass
Dichanthelium linearifolium (Scribn.) Gould - slender-leaved panic grass
Digitaria cognata - fall witch grass
Elymus canadensis L. - Great Plains wild-rye
Elymus curvatus Piper - awnless wild-rye
Elymus diversiglumis Scribn. & Ball - unequal-glumed wild-rye
Elymus hystrix L. - glumeless wild-rye
Festuca rubra L. - red fescue
Glyceria borealis (Nash) Batch. - boreal manna grass
Glyceria grandis S.Watson - reed manna grass
Holcus lanatus L. - velvet grass
Lolium perenne subsp. perenne - perennial rye grass
Milium effusum L. - wood millet
Muhlenbergia uniflora (Muhl.) Fernald - one-flowered satin grass
Phalaris arundinacea L. - reed canary grass
Poa alsodes A.Gray - woodland bluegrass
Poa annua L. - speargrass
Poa compressa L. - wiregrass
Poa nemoralis L. - wood bluegrass
Poa palustris L. - marsh bluegrass
Poa pratensis L. - Kentucky bluegrass
Torreyochloa fernaldii (Hitchc.) Church - Fernald's false manna grass
Zizania palustris L. - northern wild rice
Phlox paniculata L. - summer phlox
Fallopia cilinodis (Michx.) Holub - fringed black bindweed
Persicaria maculosa Gray - spotted lady's-thumb
Rumex acetosella L. - sheep sorrel
Rumex britannica L. - British dock
Rumex crispus L. - yellow dock
Rumex obtusifolius L. - bitter dock
Rumex patientia L. - patience dock
Pontederia cordata L. - pickerel-weed
Potamogeton amplifolius Tuck. - large-leaved pondweed
Potamogeton bicupulatus Fernald - snail-seed pondweed
Potamogeton confervoides Rchb. - Tuckerman's pondweed
Potamogeton crispus L. - curly pondweed
Potamogeton diversifolius Raf. - water-thread 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 praelongus Wulfen - white-stemmed pondweed
Potamogeton robbinsii Oakes - Robbins' pondweed
Potamogeton spirillus Tuck. - spiral-fruited pondweed
Potamogeton strictifolius A.Benn. - straight-leaved pondweed
Potamogeton zosteriformis Fernald - flat-stemmed pondweed
Stuckenia filiformis (Pers.) Börner - thread-leaved pondweed
Lysimachia nummularia L. - creeping jenny
Lysimachia quadrifolia L. - whorled yellow loosestrife
Lysimachia thyrsiflora L. - tufted loosestrife
Trientalis borealis Raf. - American starflower
Adiantum pedatum L. - northern maidenhair fern
Actaea pachypoda Elliott - white baneberry
Anemone americana (DC.) H.Hara - round-lobed hepatica
Aquilegia canadensis L. - wild columbine
Caltha palustris L. - yellow marsh-marigold
Clematis occidentalis var. occidentalis - western blue virgin's-bower
Clematis virginiana L. - virgin's-bower
Coptis trifolia (L.) Salisb. - three-leaved gold-thread
Ranunculus abortivus L. - small-flowered buttercup
Ranunculus acris L. - tall buttercup
Ranunculus flammula L. - spearwort buttercup
Ranunculus hispidus Michx. - rough buttercup
Ranunculus pensylvanicus L.f. - Pennsylvania buttercup
Ranunculus sceleratus L. - cursed crowfoot
Rhamnus alnifolia L'Hér. - alder-leaf buckthorn
Agrimonia striata Michx. - roadside agrimony
Amelanchier bartramiana (Tausch) M.Roem. - oblong-fruit serviceberry
Amelanchier interior Nielsen - Wiegand's shadbush
Amelanchier laevis Wiegand - smooth serviceberry
Amelanchier sanguinea - round-leaved serviceberry
Comarum palustre L. - purple marshlocks
Crataegus chrysocarpa Ashe - round-leaved hawthorn
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
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
Rosa blanda Aiton - meadow roae
Rosa majalis Herrm. - double cinnamon rose
Rosa rugosa Thunb. - rugose rose
Rubus canadensis L. - smooth highbush blackberry
Rubus flagellaris Willd. - rambling dewberry
Rubus parviflorus Nutt. - western thimbleberry
Rubus pensilvanicus Poir. - Vicksburg blackberry
Rubus pubescens Raf. - dwarf red blackberry
Rubus setosus Bigelow - swamp blackberry
Sorbus americana Marshall - American mountain ash
Spiraea alba Du Roi - eastern meadowsweet
Spiraea alba var. alba - white meadowsweet
Spiraea tomentosa - steeplebush
Galium album Mill. - wild madder
Galium asprellum Michx. - rough bedstraw
Galium lanceolatum Torr. - wild licorice
Galium tinctorium L. - stiff bedstraw
Galium triflorum Michx. - sweet-scented bedstraw
Galium verum L. - yellow spring bedstraw
Mitchella repens L. - partridgeberry
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 lucida Muhl. - shining willow
Salix petiolaris Sm. - slender willow
Salix x rubens Schrank (pro sp.) - hybrid crack willow
Arceuthobium pusillum Peck - eastern dwarf mistletoe
Acer rubrum L. - red maple
Acer spicatum Lam. - mountain maple
Sarracenia purpurea - purple pitcher-plant
Mitella nuda L. - small bishop's-cap
Scrophularia lanceolata Pursh - lance-leaf figwort
Verbascum thapsus L. - giant mullein
Smilax illinoensis Mangaly - Illinois greenbrier
Leucophysalis grandiflora (Hook.) Rydb. - white-flowered ground-cherry
Solanum dulcamara L. - deadly nightshade
Taxus canadensis Marshall - ground-hemlock
Dirca palustris L. - rope-bark
Sparganium americanum Nutt. - American bur-reed
Sparganium angustifolium Michx. - narrow-leaved bur-reed
Sparganium emersum Rehmann - narrow-leaved bur-reed
Sparganium natans L. - small bur-reed
Typha latifolia L. - common cat-tail
Ulmus americana L. - white elm
Pilea pumila (L.) A.Gray - Canadian clearweed
Verbena bracteata Lag. & Rodr. - prostrate vervain
Verbena hastata L. - swamp verbena
Viola adunca Sm. - sand violet
Viola blanda Willd. - sweet white violet
Viola canadensis L. - tall white violet
Viola cucullata Aiton - marsh blue violet
Viola nephrophylla Greene - northern bog violet
Viola pedata L. - bird's-foot violet
Viola pedata f. rosea Sanders - bird's-foot violet
Viola pubescens Aiton - yellow violet
Viola renifolia A.Gray - white violet
Viola sororia Willd. - hairy wood violet
Vitis riparia Michx. - river bank grape
Xyris montana Ries - northern yellow-eyed-grass