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Families: 123
Genera: 487
Species: 1156 (species rank)
Total Taxa: 1280 (including subsp. and var.)

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Scirpus hattorianus Makino - mosquito bulrush
Scirpus pendulus Muhl. - rufous bulrush
Drosera intermedia Hayne - spoon-leaf sundew
Drosera rotundifolia L. - round-leaved sundew
Cystopteris bulbifera (L.) Bernh. - bulblet fragile fern
Cystopteris fragilis (L.) Bernh. - northern fragile fern
Cystopteris tenuis (Michx.) Desv. - upland brittle bladder fern
Onoclea sensibilis L. - sensitive fern
Elatine triandra Schkuhr - water-purslane
Equisetum arvense L. - field horsetail
Equisetum fluviatile L. - water horsetail
Equisetum hyemale - scouring rush horsetail
Equisetum laevigatum A.Braun - smooth scouring rush
Equisetum palustre L. - marsh horsetail
Equisetum pratense Ehrh. - meadow horsetail
Equisetum scirpoides Michx. - sedge horsetail
Equisetum sylvaticum L. - woodland horsetail
Equisetum variegatum - variegated scouring rush
Equisetum variegatum subsp. variegatum - variegated scouring rush
Chimaphila umbellata - prince's-pine
Epigaea repens L. - trailing-arbutus
Monotropa uniflora L. - Indian-pipe
Orthilia secunda (L.) House - one-sided wintergreen
Pyrola elliptica Nutt. - wax-flower shin-leaf
Vaccinium angustifolium Aiton - low sweet blueberry
Vaccinium macrocarpon Aiton - large cranberry
Vaccinium myrtilloides Michx. - velvet-leaf huckleberry
Vaccinium oxycoccos L. - small cranberry
Euphorbia corollata L. - flowering spurge
Euphorbia cyparissias L. - graveyard spurge
Euphorbia glyptosperma Engelm. - ridge-seeded spurge
Euphorbia maculata L. - milk-purslane
Euphorbia nutans Lag. - nodding spurge
Euphorbia serpyllifolia Pers. - thyme-leaved spurge
Desmodium canadense (L.) DC. - showy tick-trefoil
Lathyrus palustris L. - slender-stem pea-vine
Lathyrus sylvestris L. - perennial pea
Lespedeza capitata Michx. - round-headed lespedeza
Lotus corniculatus L. - bird's-foot trefoil
Lupinus perennis L. - wild lupine
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 aureum Pollich - yellow hop clover
Trifolium hybridum L. - alsike clover
Trifolium repens L. - white clover
Vicia villosa Roth - winter vetch
Quercus alba L. - white oak
Quercus rubra L. - northern red oak
Gentiana andrewsii - prairie closed gentian
Gentiana andrewsii var. andrewsii - prairie closed gentian
Gentiana rubricaulis Schwein. - red-stemmed gentian
Gentianopsis crinita (Froel.) Ma - greater fringed gentian
Geranium maculatum L. - wild geranium
Ribes americanum Mill. - wild black currant
Ribes cynosbati L. - prickly wild gooseberry
Ribes glandulosum Grauer - skunk currant
Ribes hirtellum Michx. - hairy-stem gooseberry
Ribes hudsonianum Richardson - northern black currant
Ribes lacustre (Pers.) Poir. - spiny swamp currant
Ribes missouriense Nutt. - wild gooseberry
Ribes triste Pall. - wild red currant
Myriophyllum heterophyllum Michx. - various-leaved water-milfoil
Myriophyllum sibiricum Kom. - short-spike water-milfoil
Myriophyllum spicatum L. - spike water-milfoil
Myriophyllum tenellum Bigelow - slender water-milfoil
Myriophyllum verticillatum L. - whorled water-milfoil
Proserpinaca palustris - marsh mermaid-weed
Hamamelis virginiana L. - American witch-hazel
Elodea canadensis Michx. - common waterweed
Hypericum sp. L. - St. John's-Wort
Hypericum ascyron L. - great St. John's-wort
Hypericum boreale (Britton) E.P.Bicknell - northern St. John's-wort
Hypericum kalmianum L. - Kalm's St. John's-wort
Hypericum majus (A.Gray) Britton - larger Canadian St. John's-wort
Hypericum perforatum L. - 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 montanum Greene - strict blue-eyed grass
Sisyrinchium montanum var. montanum - strict blue-eyed grass
Sisyrinchium strictum E.P.Bicknell - mountain blue-eyed-grass
Isoëtes sp. L. - Quillwort
Isoëtes lacustris L. - large-spored quillwort
Juglans cinerea L. - white walnut
Juglans nigra L. - black walnut
Juncus alpinoarticulatus Chaix - northern green rush
Juncus articulatus L. - jointed rush
Juncus bufonius L. - toad rush
Juncus canadensis J.Gay - Canadian rush
Juncus dudleyi Wiegand - Dudley's rush
Juncus effusus L. - soft rush
Juncus nodosus L. - knotted rush
Juncus pelocarpus E.Mey. - brown-fruited rush
Juncus tenuis Willd. - roadside rush
Juncus torreyi Coville - Torrey's rush
Luzula acuminata Raf. - hairy wood rush
Luzula multiflora - common wood rush
Triglochin maritima L. - seaside arrow-grass
Triglochin palustris L. - slender bog arrow-grass
Ajuga genevensis L. - standing bugle
Hedeoma hispida Pursh - rough pennyroyal
Lycopus uniflorus Michx. - northern water-horehound
Lycopus virginicus L. - Virginia water-horehound
Monarda fistulosa - wild bergamot
Pycnanthemum tenuifolium Schrad. - slender mountain mint
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
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 var. dubia - yellow-seed false pimpernel
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 sp. L. - Bog Clubmoss
Lycopodium clavatum L. - staghorn club-moss
Lythrum salicaria L. - spiked loosestrife
Malva neglecta Wallr. - common mallow
Malva pusilla Sm. - low 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 rubra L. - red mulberry
Myrica gale L. - sweet gale
Nuphar variegata Durand - bull-head pond-lily
Nymphaea odorata Aiton - fragrant water-lily
Syringa vulgaris L. - common lilac
Circaea alpina subsp. alpina - small 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 palustre L. - marsh willow-herb
Epilobium strictum Muhl. ex Spreng. - northeastern willow-herb
Ludwigia polycarpa Short & R.Peter - top-pod water-primrose
Oenothera biennis L. - common evening-primrose
Oenothera parviflora L. - small-flowered evening-primrose
Oenothera perennis L. - small sundrops
Botrychium lanceolatum - triangle moonwort
Botrychium simplex E.Hitchc. - small grape fern
Ophioglossum pusillum Raf. - northern adder's-tongue
Sceptridium dissectum (Spreng.) Lyon - lace-frond grape fern
Arethusa bulbosa L. - swamp-pink
Cypripedium acaule Aiton - small pink lady's-slipper
Cypripedium reginae Walter - showy lady's-slipper
Goodyera pubescens (Willd.) R.Br. - downy rattlesnake-plantain
Goodyera repens (L.) R.Br. - lesser rattlesnake-plantain
Liparis loeselii (L.) Rich. - Loesel's twayblade
Malaxis monophyllos - white adder's-mouth
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 psycodes (L.) Lindl. - lesser purple fringed orchid
Spiranthes casei var. casei - Case's lady's-tresses
Spiranthes cernua (L.) Rich. - nodding lady's-tresses
Spiranthes lacera var. lacera - northern slender lady's-tresses
Spiranthes romanzoffiana Cham. - hooded lady's-tresses
Agalinis tenuifolia (Vahl) Raf. - common false foxglove
Castilleja coccinea (L.) Spreng. - scarlet painted-cup
Melampyrum lineare Desr. - 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
Dicentra cucullaria (L.) Bernh. - Dutchman's-breeches
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
Gratiola neglecta Torr. - clammy hedge-hyssop
Hippuris vulgaris L. - mare's tail
Linaria vulgaris Mill. - butter-and-eggs
Penstemon digitalis Nutt. ex Sims - tall white beard-tongue
Plantago patagonica Jacq. - woolly plantain
Plantago rugelii Decne. - Rugel's plantain
Veronica arvensis L. - corn speedwell
Veronica scutellata L. - skullcap speedwell
Agrostis stolonifera L. - creeping tickle grass
Alopecurus aequalis Sobol. - short-awned foxtail
Alopecurus pratensis L. - meadow foxtail
Aristida basiramea Engelm. ex Vasey - fork-tip three-awn grass
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
Calamagrostis stricta (Timm) Koeler - slim-stem small reed grass
Cinna arundinacea L. - stout wood-reed
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 hystrix L. - glumeless wild-rye
Elymus hystrix var. hystrix - glumeless wild-rye
Eragrostis minor Host - little love grass
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
Lolium perenne subsp. perenne - perennial rye grass
Milium effusum L. - wood millet
Muhlenbergia uniflora (Muhl.) Fernald - one-flowered satin grass
Panicum capillare - witch 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 nemoralis L. - wood bluegrass
Poa palustris L. - marsh bluegrass
Poa pratensis L. - Kentucky bluegrass
Puccinellia distans (Jacq.) Parl. - weeping alkali grass
Setaria faberi R.A.W.Herrm. - nodding foxtail
Setaria viridis var. viridis - green bristle grass
Sorghastrum nutans (L.) Nash - yellow Indian grass
Zizania aquatica L. - southern wild rice
Phlox paniculata L. - summer phlox
Phlox subulata L. - moss-pink