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Families: 111
Genera: 349
Species: 692 (species rank)
Total Taxa: 704 (including subsp. and var.)

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Viburnum acerifolium L. - maple-leaved viburnum
Viburnum lentago L. - sheepberry
Alisma subcordatum Raf. - southern water-plantain
Sagittaria graminea subsp. graminea - grass-leaved sagittaria
Sagittaria rigida Pursh - stiff arrow-head
Amaranthus retroflexus L. - wild-beet amaranth
Chenopodium simplex (Torr.) Raf. - maple-leaved goosefoot
Rhus glabra L. - smooth sumac
Rhus typhina L. - staghorn sumac
Angelica atropurpurea L. - purple-stem angelica
Carum carvi L. - caraway
Cicuta maculata L. - spotted water-hemlock
Osmorhiza longistylis (Torr.) DC. - smooth sweet cicely
Pastinaca sativa L. - wild parsnip
Sanicula canadensis L. - Canadian sanicle
Sanicula marilandica L. - Maryland sanicle
Sanicula trifoliata E.P.Bicknell - large-fruited black snakeroot
Apocynum androsaemifolium L. - spreading dogbane
Asclepias exaltata L. - tall milkweed
Asclepias tuberosa - orange milkweed
Asclepias verticillata L. - whorled milkweed
Ilex verticillata (L.) A.Gray - common winterberry
Lemna minor L. - small duckweed
Lemna turionifera Landolt - Turion duckweed
Aralia hispida Vent. - bristly sarsaparilla
Aralia nudicaulis L. - wild sarsaparilla
Panax trifolius L. - groundnut
Asarum canadense L. - wild-ginger
Maianthemum canadense Desf. - wild lily-of-the-valley
Maianthemum canadense var. canadense - wild lily-of-the-valley
Maianthemum stellatum (L.) Link - starry false Solomon's-seal
Ambrosia trifida L. - horse-cane
Antennaria neglecta Greene - field pussy-toes
Bidens cernua L. - nodding bur-marigold
Bidens frondosa L. - devil's beggar-ticks
Bidens vulgata Greene - tall beggar-ticks
Cirsium muticum Michx. - swamp thistle
Doellingeria umbellata (Mill.) Nees - tall flat-topped white aster
Erigeron annuus (L.) Pers. - eastern daisy fleabane
Eurybia macrophylla (L.) Cass. - large-leaved aster
Euthamia graminifolia (L.) Nutt. - grass-leaved goldenrod
Eutrochium maculatum L. - spotted Joe-Pye-weed
Gnaphalium uliginosum L. - marsh cudweed
Helenium autumnale L. - common sneezeweed
Helianthus decapetalus L. - thin-leaved sunflower
Helianthus giganteus L. - tall sunflower
Helianthus strumosus L. - rough-leaved sunflower
Helianthus tuberosus L. - woodland sunflower
Hieracium scabrum Michx. - sticky hawkweed
Hieracium umbellatum L. - northern hawkweed
Lactuca canadensis L. - wild lettuce
Liatris aspera Michx. - rough gayfeather
Packera aurea (L.) A.Löve & D.Löve - heart-leaved groundsel
Polymnia canadensis L. - white-flowered leaf-cup
Prenanthes alba L. - white rattlesnakeroot
Prenanthes racemosa Michx. - purple rattlesnake-root
Rudbeckia laciniata L. - wild golden-glow
Solidago flexicaulis L. - zigzag goldenrod
Solidago gigantea Aiton - smooth goldenrod
Solidago juncea Aiton - early goldenrod
Solidago nemoralis Aiton - old-field goldenrod
Solidago speciosa Nutt. - showy goldenrod
Solidago uliginosa Nutt. - northern bog goldenrod
Sonchus asper (L.) Hill - spiny-leaf sow-thistle
Vernonia fasciculata Michx. - smooth ironweed
Impatiens capensis Meerb. - spotted touch-me-not
Impatiens pallida Nutt. - yellow touch-me-not
Podophyllum peltatum L. - wild mandrake
Betula cordifolia Regel - mountain white birch
Betula pumila L. - swamp birch
Corylus americana Walter - American hazelnut
Hydrophyllum virginianum L. - Virginia waterleaf
Myosotis scorpioides L. - water scorpion-grass
Myosotis sylvatica Ehrh. ex Hoffm. - woodland forget-me-not
Symphytum officinale L. - common comfrey
Berteroa incana (L.) DC. - hoary-alyssum
Cardamine parviflora L. - small-flowered bitter-cress
Cardamine pensylvanica Muhl. ex Willd. - Pennsylvania bitter-cress
Erysimum cheiranthoides L. - worm-seed wallflower
Lepidium densiflorum Schrad. - small peppergrass
Sinapis arvensis L. - charlock mustard
Lobelia inflata L. - Indian-tobacco
Lobelia siphilitica L. - great blue lobelia
Diervilla lonicera Mill. - northern bush-honeysuckle
Lonicera hirsuta Eaton - hairy honeysuckle
Lonicera tatarica L. - Tartarian honeysuckle
Triosteum aurantiacum var. aurantiacum - orange-fruit horse-gentian
Dianthus armeria - Deptford pink
Silene latifolia Poir. - white cockle
Spergula arvensis L. - corn spurry
Stellaria longifolia Muhl. ex Willd. - long-leaved stitchwort
Celastrus scandens L. - climbing bittersweet
Crocanthemum canadense (L.) Britton - long-branch frostweed
Uvularia grandiflora Sm. - large-flowered bellwort
Cornus alternifolia L.f. - pagoda dogwood
Cornus canadensis L. - dwarf cornel
Cornus rugosa Lam. - round-leaved dogwood
Cornus sericea L. - red osier dogwood
Thuja occidentalis L. - northern white-cedar
Carex adusta Boott - lesser brown sedge
Carex arctata Boott - drooping woodland sedge
Carex blanda Dewey - wood sedge
Carex brevior (Dewey) Mack. - plains oval sedge
Carex cephaloidea (Dewey) Dewey - clustered bracted sedge
Carex crawfordii Fernald - Crawford's sedge
Carex folliculata L. - northern long sedge
Carex gracillima Schwein. - purple-sheathed graceful sedge
Carex gynandra Schwein. - nodding sedge
Carex haydenii Dewey - long-scaled tussock sedge
Carex hirtifolia Mack. - pubescent sedge
Carex intumescens Rudge - swollen sedge
Carex lacustris Willd. - rip-gut sedge
Carex leptonervia (Fernald) Fernald - nerveless woodland sedge
Carex lurida Wahlenb. - shallow sedge
Carex normalis Mack. - spreading oval sedge
Carex oligosperma Michx. - few-seeded sedge
Carex pensylvanica Lam. - Pennsylvania sedge
Carex plantaginea Lam. - plantain-leaved wood sedge
Carex projecta Mack. - necklace sedge
Carex radiata (Wahlenb.) Small - straight-styled wood sedge
Carex retrorsa Schwein. - retrorse 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 utriculata Boott - Northwest Territory sedge
Carex vesicaria L. - tufted lake sedge
Carex woodii Dewey - Wood's stiff sedge
Cyperus bipartitus Torr. - slender flat sedge
Cyperus erythrorhizos Muhl. - red-rooted sedge
Eleocharis robbinsii Oakes - Robbins' spike-rush
Eriophorum virginicum L. - tawny cotton-grass
Rhynchospora capillacea Torr. - needle beak sedge
Scirpus atrocinctus Fernald - black-girdled wool-grass
Scirpus atrovirens Willd. - dark-green bulrush
Scirpus hattorianus Makino - mosquito bulrush
Drosera intermedia Hayne - spoon-leaf sundew
Drosera rotundifolia L. - round-leaved sundew
Cystopteris fragilis (L.) Bernh. - northern fragile fern
Cystopteris tenuis (Michx.) Desv. - upland brittle bladder fern
Dryopteris x triploidea Wherry - triploid wood fern
Onoclea sensibilis L. - sensitive fern
Equisetum arvense L. - field horsetail
Equisetum pratense Ehrh. - meadow horsetail
Equisetum sylvaticum L. - woodland horsetail
Epigaea repens L. - trailing-arbutus
Pyrola elliptica Nutt. - wax-flower shin-leaf
Vaccinium angustifolium Aiton - low sweet blueberry
Vaccinium macrocarpon Aiton - large cranberry
Vaccinium oxycoccos L. - small cranberry
Acalypha rhomboidea Raf. - three-seeded-mercury
Euphorbia corollata L. - flowering spurge
Euphorbia nutans Lag. - nodding spurge
Baptisia lactea (Raf.) Thieret - white wild indigo
Lespedeza capitata Michx. - round-headed lespedeza
Lotus corniculatus L. - bird's-foot trefoil
Lupinus perennis L. - wild lupine
Medicago lupulina L. - black medick
Trifolium aureum Pollich - yellow hop clover
Trifolium repens L. - white clover
Quercus alba L. - white oak
Quercus rubra L. - northern red oak
Geranium maculatum L. - wild geranium
Ribes americanum Mill. - wild black currant
Ribes cynosbati L. - prickly wild gooseberry
Ribes glandulosum Grauer - skunk currant
Ribes missouriense Nutt. - wild gooseberry
Ribes triste Pall. - wild red currant
Myriophyllum farwellii Morong - Farwell's water-milfoil
Myriophyllum heterophyllum Michx. - various-leaved water-milfoil
Hamamelis virginiana L. - American witch-hazel
Elodea canadensis Michx. - common waterweed
Hypericum ascyron L. - great St. John's-wort
Hypericum boreale (Britton) E.P.Bicknell - northern St. John's-wort
Hypericum canadense L. - lesser Canadian St. John's-wort
Hypericum kalmianum L. - Kalm's St. John's-wort
Triadenum fraseri (Spach) Gleason - Fraser's marsh St. John's-wort
Iris versicolor L. - northern blue flag
Sisyrinchium montanum var. montanum - strict blue-eyed grass
Juglans cinerea L. - white walnut
Juncus bufonius L. - toad rush
Juncus canadensis J.Gay - Canadian rush
Juncus effusus L. - soft rush
Juncus interior Wiegand - interior rush
Juncus tenuis Willd. - roadside rush
Lycopus uniflorus Michx. - northern water-horehound
Scutellaria lateriflora L. - mad-dog skullcap
Utricularia minor L. - small bladderwort
Utricularia vulgaris L. - great bladderwort
Erythronium albidum Nutt. - white trout-lily
Lilium michiganense Farw. - Turk's-cap lily
Lindernia dubia (L.) Pennell - moist bank pimpernel
Lindernia dubia var. dubia - yellow-seed false pimpernel
Lycopodiella inundata (L.) Holub - northern bog club-moss
Lycopodium clavatum L. - staghorn club-moss
Lythrum salicaria L. - spiked loosestrife
Malva neglecta Wallr. - common mallow
Trillium cernuum L. - whip-poor-will flower
Menispermum canadense L. - common moonseed
Mollugo verticillata L. - Indian chickweed
Claytonia virginica L. - Virginia spring-beauty
Nelumbo lutea Willd. - American lotus-lily
Nuphar variegata Durand - bull-head pond-lily
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
Ophioglossum pusillum Raf. - northern adder's-tongue
Sceptridium dissectum (Spreng.) Lyon - lace-frond grape fern
Malaxis unifolia Michx. - green adder's-mouth
Platanthera clavellata (Michx.) Luer - small green fringed orchid
Platanthera psycodes (L.) Lindl. - lesser purple fringed 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
Agalinis tenuifolia (Vahl) Raf. - common false foxglove
Melampyrum lineare Desr. - narrow-leaved cow-wheat
Osmunda cinnamomea L. - cinnamon fern
Osmunda claytoniana L. - interrupted fern
Oxalis corniculata L. - creeping yellow wood-sorrel
Oxalis dillenii Jacq. - southern yellow 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
Linaria vulgaris Mill. - butter-and-eggs
Agrostis stolonifera L. - creeping tickle grass
Alopecurus pratensis L. - meadow foxtail
Aristida basiramea Engelm. ex Vasey - fork-tip three-awn grass
Avena fatua L. - wild oats
Bromus ciliatus L. - fringed brome
Bromus inermis Leyss. - smooth brome
Bromus pubescens Muhl. ex Willd. - hairy woodland brome
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
Dichanthelium perlongum (Nash) Freckmann - long-stalked panic grass
Elymus canadensis L. - Great Plains wild-rye
Elymus hystrix var. hystrix - glumeless wild-rye
Glyceria borealis (Nash) Batch. - boreal manna grass