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Families: 125
Genera: 544
Species: 1252 (species rank)
Total Taxa: 1391 (including subsp. and var.)

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Carex comosa Boott - bristly sedge
Carex eburnea Boott - bristle-leaf sedge
Carex gracillima Schwein. - purple-sheathed graceful sedge
Carex gravida L.H.Bailey - long-awned bracted sedge
Carex grayi J.Carey - Gray's sedge
Carex haydenii Dewey - long-scaled tussock sedge
Carex hirta L. - sharp-toothed woolly sedge
Carex hirtifolia Mack. - pubescent sedge
Carex hitchcockiana Dewey - Hitchcock's sedge
Carex interior L.H.Bailey - inland star sedge
Carex intumescens Rudge - swollen sedge
Carex jamesii Schwein. - James' sedge
Carex lacustris Willd. - rip-gut sedge
Carex laeviconica Dewey - smooth-cone sedge
Carex laxiculmis var. laxiculmis - weak-stemmed wood sedge
Carex meadii Dewey - Mead's stiff sedge
Carex molesta Mack. ex Bright - troublesome sedge
Carex normalis Mack. - spreading oval sedge
Carex oligocarpa Willd. - rich-woods sedge
Carex pellita Willd. - broad-leaved woolly sedge
Carex pensylvanica Lam. - Pennsylvania sedge
Carex prairea Dewey - prairie sedge
Carex projecta Mack. - necklace sedge
Carex radiata (Wahlenb.) Small - straight-styled wood sedge
Carex richardsonii R.Br. - Richardson's sedge
Carex scoparia var. scoparia - lance-fruited oval sedge
Carex sparganioides Muhl. ex Willd. - loose-headed bracted sedge
Carex stricta Lam. - uptight sedge
Carex tenera Dewey - narrow-leaved oval sedge
Carex tonsa var. rugosperma (Mack.) Crins - wrinkled-seeded oak sedge
Carex trichocarpa Willd. - hairy-fruit sedge
Carex tuckermanii Dewey - Tuckerman's sedge
Carex typhina Michx. - cat-tail sedge
Carex utriculata Boott - Northwest Territory sedge
Carex vesicaria L. - tufted lake sedge
Cyperus sp. L. - Flat Sedge
Cyperus bipartitus Torr. - slender flat sedge
Cyperus diandrus Torr. - umbrella flat sedge
Cyperus erythrorhizos Muhl. - red-rooted sedge
Cyperus odoratus L. - rusty flat sedge
Cyperus schweinitzii Torr. - Schweinitz's flat sedge
Cyperus squarrosus L. - bearded flat sedge
Cyperus strigosus L. - straw-colored cyperus
Cyperus X mesochorus Geise - midland sand sedge
Eleocharis compressa var. compressa - flat-stemmed spike-rush
Eriophorum virginicum L. - tawny cotton-grass
Lipocarpha micrantha (Vahl) G.C.Tucker - small-flowered hemicarpha
Schoenoplectus pungens (Vahl) Palla - common three-square bulrush
Scirpus atrovirens Willd. - dark-green bulrush
Scirpus pedicellatus Fernald - stalked wool-grass
Cystopteris bulbifera (L.) Bernh. - bulblet fragile fern
Cystopteris fragilis (L.) Bernh. - northern fragile fern
Cystopteris tennesseensis Shaver - Tennessee bladder fern
Cystopteris tenuis (Michx.) Desv. - upland brittle bladder fern
Dryopteris x pittsfordensis Sloss. - Pittsford's wood fern
Onoclea sensibilis L. - sensitive fern
Woodsia obtusa subsp. obtusa - blunt-lobed woodsia
Shepherdia argentea (Pursh) Nutt. - silver buffalo-berry
Shepherdia canadensis (L.) Nutt. - russet buffalo-berry
Equisetum arvense L. - field horsetail
Equisetum fluviatile L. - water horsetail
Equisetum laevigatum A.Braun - smooth scouring rush
Equisetum pratense Ehrh. - meadow horsetail
Equisetum scirpoides Michx. - sedge horsetail
Monotropa uniflora L. - Indian-pipe
Pyrola americana Sweet - round-leaved shin-leaf
Pyrola elliptica Nutt. - wax-flower shin-leaf
Vaccinium angustifolium Aiton - low sweet blueberry
Vaccinium corymbosum L. - high-bush blueberry
Euphorbia corollata L. - flowering spurge
Euphorbia cyparissias L. - graveyard spurge
Euphorbia davidii Subils - David's spurge
Euphorbia dentata Michx. - toothed spurge
Euphorbia geyeri Engelm. - Geyer's spurge
Euphorbia glyptosperma Engelm. - ridge-seeded spurge
Euphorbia marginata Pursh - snow-on-the-mountain
Euphorbia nutans Lag. - nodding spurge
Amorpha fruticosa L. - indigo-bush
Baptisia lactea (Raf.) Thieret - white wild indigo
Baptisia leucophaea Nutt. - plains wild indigo
Caragana arborescens Lam. - Siberian pea-shrub
Dalea candida Michx. ex Willd. - slender white prairie-clover
Dalea candida var. candida - white prairie-clover
Dalea purpurea var. purpurea - violet prairie-clover
Desmodium canadense (L.) DC. - showy tick-trefoil
Desmodium canescens (L.) DC. - hoary tick-trefoil
Desmodium illinoense A.Gray - prairie tick-trefoil
Desmodium perplexum B.G.Schub. - perplexed tick-trefoil
Gymnocladus dioicus (L.) K.Koch - Kentucky coffee-tree
Lathyrus latifolius L. - perennial pea-vine
Lathyrus palustris L. - slender-stem pea-vine
Lathyrus tuberosus L. - tuberous vetchling
Lespedeza capitata Michx. - round-headed lespedeza
Lespedeza repens (L.) W.P.C.Barton - smooth trailing 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
Senna marilandica (L.) Link - southern wild senna
Tephrosia virginiana (L.) Pers. - Virginia tephrosia
Trifolium campestre Schreb. - pinnate hop clover
Trifolium hybridum L. - alsike clover
Trifolium repens L. - white clover
Vicia villosa Roth - winter vetch
Quercus alba L. - white oak
Quercus bicolor Willd. - swamp 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
Ribes sp. L. - Gooseberry
Ribes americanum Mill. - wild black currant
Ribes cynosbati L. - prickly wild gooseberry
Ribes hirtellum Michx. - swamp gooseberry
Ribes missouriense Nutt. - wild gooseberry
Ribes rubrum L. - garden red currant
Myriophyllum spicatum L. - spike water-milfoil
Myriophyllum verticillatum L. - whorled water-milfoil
Hamamelis virginiana L. - American witch-hazel
Elodea canadensis Michx. - common waterweed
Elodea nuttallii (Planch.) H.St.John - free-flowered waterweed
Hypericum sp. L. - St. John's-Wort
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
Hypericum sphaerocarpum Michx. - round-seeded St. John's-wort
Triadenum fraseri (Spach) Gleason - Fraser's marsh St. John's-wort
Hypoxis hirsuta (L.) Coville - yellow star-grass
Sisyrinchium albidum Raf. - white blue-eyed-grass
Sisyrinchium campestre E.P.Bicknell - prairie blue-eyed-grass
Carya sp. Nutt. - Hickory
Carya ovata var. ovata - shellbark hickory
Juglans cinerea L. - white walnut
Juglans nigra L. - black walnut
Juncus interior Wiegand - interior rush
Juncus tenuis Willd. - roadside rush
Juncus torreyi Coville - Torrey's rush
Agastache nepetoides (L.) Kuntze - yellow giant hyssop
Blephilia sp. Raf. - Pogoda-Plant
Hedeoma hispida Pursh - rough pennyroyal
Hedeoma pulegioides (L.) Pers. - American pennyroyal
Lamium purpureum L. - red dead-nettle
Lycopus sp. L. - Water-Horehound
Lycopus uniflorus Michx. - northern water-horehound
Lycopus virginicus L. - Virginia water-horehound
Mentha spicata L. - spearmint
Monarda didyma L. - scarlet bee balm
Monarda punctata - spotted bee balm
Salvia reflexa Hornem. - Rocky Mountain sage
Scutellaria lateriflora L. - mad-dog skullcap
Scutellaria ovata subsp. ovata - heart-leaved skullcap
Stachys tenuifolia - smooth hedge-nettle
Utricularia vulgaris L. - great bladderwort
Erythronium albidum Nutt. - white trout-lily
Lilium michiganense Farw. - Turk's-cap lily
Linum sulcatum Riddell - grooved yellow flax
Lindernia dubia var. dubia - yellow-seed false pimpernel
Lythrum salicaria L. - spiked loosestrife
Hibiscus laevis All. - smooth rose mallow
Hibiscus trionum L. - flower-of-an-hour
Malva neglecta Wallr. - common mallow
Malva pusilla Sm. - low mallow
Malva sylvestris L. - high mallow
Napaea dioica L. - glade mallow
Trillium cernuum L. - whip-poor-will flower
Trillium flexipes Raf. - nodding wake-robin
Menispermum canadense L. - common moonseed
Mollugo verticillata L. - Indian chickweed
Claytonia virginica L. - Virginia spring-beauty
Morus sp. - Mulberry
Morus alba L. - white mulberry
Morus rubra L. - red mulberry
Nelumbo lutea Willd. - water-chinquapin
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
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
Oenothera villosa subsp. villosa - hairy evening-primrose
Ophioglossum pusillum Raf. - northern adder's-tongue
Sceptridium dissectum (Spreng.) Lyon - lace-frond grape fern
Cypripedium acaule Aiton - small pink lady's-slipper
Cypripedium parviflorum Salisb. - yellow lady's-slipper
Cypripedium reginae Walter - showy lady's-slipper
Goodyera pubescens (Willd.) R.Br. - downy rattlesnake-plantain
Liparis loeselii (L.) Rich. - Loesel's twayblade
Malaxis unifolia Michx. - green adder's-mouth
Platanthera psycodes (L.) Lindl. - lesser purple fringed orchid
Spiranthes lacera var. lacera - northern slender lady's-tresses
Spiranthes magnicamporum Sheviak - Great Plains lady's-tresses
Agalinis gattingeri (Small) Small - round-stemmed false foxglove
Agalinis tenuifolia (Vahl) Raf. - common false foxglove
Aureolaria grandiflora var. pulchra Pennell - large-flowered yellow false foxglove
Castilleja coccinea (L.) Spreng. - scarlet painted-cup
Castilleja sessiliflora Pursh - downy painted-cup
Orobanche uniflora L. - one-flowered broom-rape
Osmunda cinnamomea L. - cinnamon fern
Osmunda claytoniana L. - interrupted fern
Oxalis corniculata L. - creeping yellow wood-sorrel
Oxalis dillenii Jacq. - southern yellow wood-sorrel
Oxalis stricta L. - tall wood-sorrel
Oxalis violacea L. - violet wood-sorrel
Chelidonium majus L. - greater celandine
Corydalis micrantha subsp. micrantha - small-flowered corydalis
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
Linaria vulgaris Mill. - butter-and-eggs
Penstemon digitalis Nutt. ex Sims - tall white beard-tongue
Penstemon grandiflorus Nutt. - large-flowered beard-tongue
Plantago aristata Michx. - large-bracted plantain
Plantago patagonica Jacq. - woolly plantain
Plantago rugelii Decne. - Rugel's plantain
Plantago virginica L. - Virginia plantain
Veronica arvensis L. - corn speedwell
Veronica longifolia L. - long-leaved speedwell
Veronica peregrina L. - purslane speedwell
Veronica persica Poir. - bird's-eye speedwell
Veronica polita Fr. - wayside speedwell
Veronica scutellata L. - skullcap speedwell
Agrostis perennans - upland bent grass
Alopecurus aequalis Sobol. - short-awned foxtail
Alopecurus pratensis L. - meadow foxtail
Aristida basiramea Engelm. ex Vasey - fork-tip three-awn grass
Aristida dichotoma var. dichotoma - Shinners' three-awned grass
Aristida oligantha Michx. - plains three-awn grass
Aristida tuberculosa Nutt. - seaside three-awn
Avena fatua L. - wild oats
Bromus arvensis 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
Chloris verticillata Nutt. - tumble windmill grass
Cinna arundinacea L. - stout wood-reed
Dactylis glomerata L. - orchard grass
Dichanthelium latifolium (L.) Harvill - broad-leaved panic grass
Dichanthelium oligosanthes - few-flowered panic grass
Dichanthelium perlongum (Nash) Freckmann - long-stalked panic grass
Digitaria cognata - fall witch grass