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Families: 113
Genera: 393
Species: 824 (species rank)
Total Taxa: 831 (including subsp. and var.)

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Viburnum acerifolium L. - maple-leaved viburnum
Viburnum lentago L. - sheepberry
Viburnum opulus L. - high-bush cranberry
Viburnum trilobum Marshall - high-bush cranberry
Alisma sp. L. - Water-plantain
Alisma subcordatum Raf. - southern water-plantain
Alisma triviale Pursh - northern water-plantain
Sagittaria sp. L. - Arrowhead
Sagittaria cristata Engelm. - crested arrow-head
Sagittaria graminea subsp. graminea - grass-leaved sagittaria
Sagittaria rigida Pursh - stiff arrow-head
Amaranthus albus L. - white amaranth
Amaranthus retroflexus L. - wild-beet amaranth
Chenopodium simplex (Torr.) Raf. - maple-leaved goosefoot
Rhus typhina L. - staghorn sumac
Carum carvi L. - caraway
Cicuta bulbifera L. - bulblet water-hemlock
Cicuta maculata L. - spotted water-hemlock
Daucus carota L. - wild carrot
Heracleum maximum W.Bartram - American cow-parsnip
Pastinaca sativa L. - wild parsnip
Sanicula canadensis L. - Canadian sanicle
Sanicula marilandica L. - Maryland sanicle
Apocynum androsaemifolium L. - spreading dogbane
Asclepias verticillata L. - whorled milkweed
Vinca minor L. - running-myrtle
Ilex verticillata (L.) A.Gray - common winterberry
Arisaema triphyllum - Jack-in-the-pulpit
Calla palustris L. - wild calla
Lemna minor L. - small duckweed
Lemna trisulca L. - star duckweed
Lemna turionifera Landolt - Turion duckweed
Aralia hispida Vent. - bristly sarsaparilla
Aralia nudicaulis L. - wild sarsaparilla
Aralia racemosa L. - life-of-man
Hydrocotyle americana L. - marsh pennywort
Panax trifolius L. - groundnut
Asarum canadense L. - wild-ginger
Asparagus officinalis L. - garden asparagus
Maianthemum canadense Desf. - wild lily-of-the-valley
Maianthemum canadense var. canadense - wild lily-of-the-valley
Maianthemum trifolium (L.) Sloboda - three-leaf Solomon's-plume
Antennaria neglecta Greene - field pussy-toes
Anthemis cotula L. - stinking-cotula
Artemisia biennis Willd. - biennial wormwood
Bidens cernua L. - nodding bur-marigold
Bidens connata Muhl. ex Willd. - purple-stemmed tickseed
Bidens frondosa L. - devil's beggar-ticks
Bidens tripartita L. - swamp tickseed
Bidens vulgata Greene - tall beggar-ticks
Centaurea sp. L. - Star-Thistle
Centaurea cyanus L. - cornflower
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
Helianthus annuus L. - garden sunflower
Helianthus giganteus L. - tall sunflower
Helianthus strumosus L. - rough-leaved sunflower
Heliopsis helianthoides (L.) Sweet - sunflower-everlasting
Hieracium caespitosum Dumort. - yellow king-devil
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
Petasites frigidus - northern sweet-colt's-foot
Prenanthes alba L. - white rattlesnakeroot
Rudbeckia laciniata L. - wild golden-glow
Solidago canadensis L. - common goldenrod
Solidago flexicaulis L. - zigzag goldenrod
Solidago gigantea Aiton - smooth goldenrod
Solidago nemoralis Aiton - old-field goldenrod
Solidago uliginosa Nutt. - northern bog goldenrod
Sonchus asper (L.) Hill - spiny-leaf sow-thistle
Tragopogon dubius Scop. - yellow salsify
Impatiens capensis Meerb. - spotted touch-me-not
Berberis thunbergii DC. - Japanese barberry
Betula cordifolia Regel - mountain white birch
Betula pumila L. - swamp birch
Betula x sandbergii Britton - Sandberg's birch
Corylus americana Walter - American hazelnut
Cynoglossum boreale Fernald - northern wild comfrey
Hydrophyllum virginianum L. - Virginia waterleaf
Myosotis scorpioides L. - water scorpion-grass
Symphytum officinale L. - common comfrey
Berteroa incana (L.) DC. - hoary-alyssum
Cardamine pensylvanica Muhl. ex Willd. - Pennsylvania bitter-cress
Erysimum cheiranthoides L. - worm-seed wallflower
Hesperis matronalis L. - dame's rocket
Lepidium densiflorum Schrad. - small peppergrass
Rorippa palustris (L.) Besser - common yellow-cress
Sinapis arvensis L. - charlock mustard
Thlaspi arvense L. - field pennycress
Turritis glabra L. - tower rock-cress
Campanula aparinoides Pursh - marsh bellflower
Campanula persicifolia L. - peach-leaved bellflower
Lobelia dortmanna L. - water lobelia
Lobelia inflata L. - Indian-tobacco
Lobelia siphilitica L. - great blue lobelia
Diervilla lonicera Mill. - northern bush-honeysuckle
Dipsacus laciniatus L. - cut-leaved teasel
Linnaea borealis - twinflower
Lonicera dioica L. - red honeysuckle
Lonicera hirsuta Eaton - hairy honeysuckle
Lonicera morrowii A.Gray - Morrow's honeysuckle
Lonicera oblongifolia (Goldie) Hook. - swamp fly honeysuckle
Lonicera tatarica L. - Tartarian honeysuckle
Lonicera villosa (Michx.) Schult. - mountain fly honeysuckle
Valeriana edulis - tap-rooted valerian
Valeriana officinalis L. - garden valerian
Arenaria serpyllifolia - thyme-leaved sandwort
Gypsophila muralis L. - low baby's-breath
Silene latifolia Poir. - white cockle
Stellaria graminea L. - common stitchwort
Stellaria longifolia Muhl. ex Willd. - long-leaved stitchwort
Celastrus scandens L. - climbing bittersweet
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
Sedum acre L. - yellow sedum
Sicyos angulatus L. - bur-cucumber
Thuja occidentalis L. - northern white-cedar
Carex sp. L. - Sedge
Carex albursina E.Sheld. - white bear sedge
Carex arcta Boott - northern clustered sedge
Carex arctata Boott - drooping woodland sedge
Carex aurea Nutt. - golden-fruited sedge
Carex blanda Dewey - wood sedge
Carex brunnescens - green bog sedge
Carex canescens L. - silvery sedge
Carex castanea Wahlenb. - chestnut woodland sedge
Carex communis - fibrous-root sedge
Carex communis var. communis - fibrous-root sedge
Carex comosa Boott - bristly sedge
Carex crawfordii Fernald - Crawford's sedge
Carex cryptolepis Mack. - small yellow sedge
Carex deweyana - Dewey's sedge
Carex diandra Schrank - lesser panicled sedge
Carex disperma Dewey - two-seeded bog sedge
Carex foenea Willd. - bronze-headed oval sedge
Carex gracillima Schwein. - purple-sheathed graceful sedge
Carex gynandra Schwein. - nodding sedge
Carex interior L.H.Bailey - inland star sedge
Carex intumescens Rudge - swollen sedge
Carex lacustris Willd. - rip-gut sedge
Carex leptalea - slender sedge
Carex leptonervia (Fernald) Fernald - nerveless woodland sedge
Carex normalis Mack. - spreading oval sedge
Carex oligosperma Michx. - few-seeded sedge
Carex ormostachya Wiegand - necklace-spike wood sedge
Carex peckii Howe - Peck's sedge
Carex pellita Willd. - broad-leaved woolly sedge
Carex pensylvanica Lam. - Pennsylvania sedge
Carex plantaginea Lam. - plantain-leaved wood sedge
Carex projecta Mack. - necklace sedge
Carex pseudocyperus L. - false bristly sedge
Carex retrorsa Schwein. - retrorse sedge
Carex rostrata Stokes - northern yellow lake sedge
Carex scabrata Schwein. - eastern rough sedge
Carex scoparia var. scoparia - lance-fruited oval sedge
Carex sparganioides Muhl. ex Willd. - loose-headed bracted sedge
Carex stricta Lam. - uptight sedge
Carex tenuiflora Wahlenb. - sparse-flowered sedge
Carex trisperma Dewey - three-seeded sedge
Carex tuckermanii Dewey - bent-seeded hop sedge
Carex utriculata Boott - Northwest Territory sedge
Carex vaginata Tauscher - sheathed sedge
Carex vesicaria L. - tufted lake sedge
Cyperus bipartitus Torr. - slender flat sedge
Eleocharis elliptica Kunth - elliptic spike-rush
Eleocharis intermedia Schult. - matted spike-rush
Eriophorum vaginatum L. - tussock cotton-grass
Eriophorum virginicum L. - tawny cotton-grass
Rhynchospora alba (L.) Vahl - white beak-rush
Scirpus atrocinctus Fernald - black-girdled wool-grass
Scirpus atrovirens Willd. - dark-green bulrush
Scirpus hattorianus Makino - mosquito bulrush
Scirpus pedicellatus Fernald - stalked wool-grass
Drosera intermedia Hayne - spoon-leaf sundew
Drosera rotundifolia L. - round-leaved sundew
Athyrium filix-femina - northern lady fern
Cystopteris bulbifera (L.) Bernh. - bulblet fragile fern
Onoclea sensibilis L. - sensitive fern
Shepherdia argentea (Pursh) Nutt. - silver buffalo-berry
Elatine sp. - Waterwort
Equisetum sp. L. - Scouring-Rush
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
Equisetum sylvaticum L. - woodland horsetail
Chimaphila umbellata - prince's-pine
Epigaea repens L. - trailing-arbutus
Monotropa uniflora L. - Indian-pipe
Orthilia secunda (L.) House - one-sided wintergreen
Pyrola americana Sweet - round-leaved shin-leaf
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 cyparissias L. - graveyard spurge
Lathyrus palustris L. - slender-stem pea-vine
Lathyrus sylvestris L. - perennial pea
Lotus corniculatus L. - bird's-foot trefoil
Lupinus polyphyllus Lindl. - big-leaf lupine
Medicago lupulina L. - black medick
Melilotus albus Medik. - white sweet-clover
Melilotus officinalis (L.) Lam. - yellow sweet-clover
Trifolium arvense L. - rabbit-foot clover
Trifolium aureum Pollich - yellow hop clover
Trifolium campestre Schreb. - pinnate hop clover
Trifolium hybridum L. - alsike clover
Trifolium repens L. - white clover
Vicia villosa Roth - winter vetch
Quercus bicolor Willd. - swamp white oak
Quercus rubra L. - northern red oak
Gentiana andrewsii var. andrewsii - prairie closed gentian
Gentiana rubricaulis Schwein. - red-stemmed gentian
Geranium maculatum L. - wild geranium
Geranium pratense L. - meadow geranium
Ribes americanum Mill. - wild black currant
Ribes cynosbati L. - prickly wild gooseberry
Ribes glandulosum Grauer - skunk currant
Ribes hirtellum Michx. - swamp gooseberry
Ribes hudsonianum Richardson - northern black currant
Ribes lacustre (Pers.) Poir. - spiny swamp currant
Ribes triste Pall. - wild red currant
Myriophyllum sp. L. - Water-Milfoil
Myriophyllum alterniflorum DC. - alternate-flowered water-milfoil
Myriophyllum farwellii Morong - Farwell's water-milfoil
Myriophyllum heterophyllum Michx. - various-leaved water-milfoil
Myriophyllum sibiricum Kom. - short-spike water-milfoil
Myriophyllum tenellum Bigelow - slender 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 ellipticum Hook. - pale 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
Isoëtes echinospora - stiff quillwort
Isoëtes lacustris L. - large-spored quillwort
Juglans cinerea L. - white walnut
Juglans nigra L. - black walnut
Juncus canadensis J.Gay - Canadian rush
Juncus effusus L. - soft rush
Juncus nodosus L. - joint rush
Juncus pelocarpus E.Mey. - brown-fruited rush
Juncus torreyi Coville - Torrey's rush
Triglochin maritima L. - seaside arrow-grass
Blephilia sp. Raf. - Pogoda-Plant
Galeopsis tetrahit L. - hemp-nettle
Lycopus uniflorus Michx. - northern water-horehound
Monarda didyma L. - scarlet bee balm
Scutellaria lateriflora L. - mad-dog skullcap
Utricularia sp. - 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
Lilium michiganense Farw. - Turk's-cap lily
Medeola virginiana L. - Indian cucumber-root
Diphasiastrum complanatum (L.) Holub - northern 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 moschata L. - musk mallow
Malva neglecta Wallr. - common mallow
Malva pusilla Sm. - low mallow
Trillium cernuum L. - whip-poor-will flower
Menyanthes trifoliata L. - common buckbean
Claytonia virginica L. - Virginia spring-beauty
Myrica gale L. - sweet gale
Nuphar sp. - Yellow Water-Lily
Nuphar variegata Durand - bull-head pond-lily
Nymphaea odorata Aiton - fragrant water-lily