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Families: 117
Genera: 455
Species: 975 (species rank)
Total Taxa: 989 (including subsp. and var.)

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Acorus calamus L. - sweet-flag
Sambucus racemosa - scarlet elderberry
Viburnum acerifolium L. - maple-leaved viburnum
Viburnum lantana L. - wayfaring-tree
Viburnum lentago L. - sheepberry
Viburnum opulus L. - high-bush cranberry
Viburnum trilobum Marshall - high-bush cranberry
Alisma sp. L. - Water-plantain
Alisma triviale Pursh - northern water-plantain
Sagittaria sp. L. - Arrowhead
Amaranthus retroflexus L. - wild-beet amaranth
Chenopodium capitatum - strawberry-blite
Chenopodium glaucum - oak-leaved goosefoot
Chenopodium simplex (Torr.) Raf. - maple-leaved goosefoot
Corispermum pallasii Steven - Siberian bugseed
Salsola tragus L. - tumbleweed
Rhus typhina L. - staghorn sumac
Angelica atropurpurea L. - purple-stem angelica
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
Osmorhiza longistylis (Torr.) DC. - smooth sweet cicely
Pastinaca sativa L. - wild parsnip
Sanicula marilandica L. - Maryland sanicle
Sanicula trifoliata E.P.Bicknell - large-fruited black snakeroot
Sium suave Walter - water-parsnip
Torilis japonica (Houtt.) DC. - Japanese hedge-parsley
Apocynum androsaemifolium L. - spreading dogbane
Asclepias exaltata L. - tall milkweed
Asclepias verticillata L. - whorled milkweed
Ilex verticillata (L.) A.Gray - common winterberry
Arisaema triphyllum - Jack-in-the-pulpit
Calla palustris L. - wild calla
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
Panax trifolius L. - groundnut
Asarum canadense L. - Canadian wild-ginger
Maianthemum canadense Desf. - wild lily-of-the-valley
Maianthemum canadense var. canadense - wild lily-of-the-valley
Maianthemum racemosum - Solomon's-plume
Maianthemum stellatum (L.) Link - starry false Solomon's-seal
Maianthemum trifolium (L.) Sloboda - three-leaf Solomon's-plume
Antennaria neglecta Greene - field pussy-toes
Anthemis cotula L. - stinking-cotula
Arctium tomentosum Mill. - woolly burdock
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 vulgata Greene - tall beggar-ticks
Carduus nutans L. - nodding thistle
Centaurea cyanus L. - cornflower
Centaurea diffusa Lam. - white knapweed
Cirsium muticum Michx. - swamp thistle
Coreopsis lanceolata L. - sand tickseed
Doellingeria umbellata (Mill.) Nees - tall flat-topped white aster
Echinops sphaerocephalus L. - great globe-thistle
Erigeron annuus (L.) Pers. - eastern daisy fleabane
Erigeron pulchellus - Robin's-plantain
Eurybia macrophylla (L.) Cass. - large-leaved aster
Euthamia graminifolia (L.) Nutt. - grass-leaved goldenrod
Eutrochium maculatum L. - spotted Joe-Pye-weed
Helenium autumnale L. - common sneezeweed
Helianthus decapetalus L. - thin-leaved sunflower
Helianthus divaricatus L. - woodland sunflower
Helianthus giganteus L. - tall sunflower
Helianthus strumosus L. - rough-leaved sunflower
Hieracium caespitosum Dumort. - yellow king-devil
Hieracium umbellatum L. - northern hawkweed
Inula helenium L. - elecampane
Lactuca canadensis L. - wild lettuce
Lactuca serriola L. - prickly lettuce
Liatris aspera Michx. - rough gayfeather
Packera aurea (L.) A.Löve & D.Löve - heart-leaved groundsel
Petasites frigidus var. sagittatus (L.) Fr. - arrow-leaf sweet-colt's-foot
Polymnia canadensis L. - white-flowered leaf-cup
Prenanthes alba L. - white rattlesnakeroot
Rudbeckia hirta - black-eyed Susan
Rudbeckia triloba - three-lobed coneflower
Rudbeckia triloba var. triloba - three-lobed coneflower
Senecio vulgaris L. - common groundsel
Solidago canadensis L. - common goldenrod
Solidago flexicaulis L. - zigzag goldenrod
Solidago gigantea Aiton - smooth goldenrod
Solidago juncea Aiton - early goldenrod
Solidago missouriensis Nutt. - Missouri goldenrod
Solidago nemoralis Aiton - old-field goldenrod
Solidago patula - swamp goldenrod
Solidago uliginosa Nutt. - northern bog goldenrod
Sonchus arvensis L. - perennial sow-thistle
Sonchus asper (L.) Hill - spiny-leaf sow-thistle
Tragopogon dubius Scop. - yellow salsify
Tragopogon pratensis L. - yellow goat's-beard
Xanthium strumarium L. - rough cocklebur
Impatiens capensis Meerb. - spotted touch-me-not
Impatiens pallida Nutt. - yellow touch-me-not
Berberis thunbergii DC. - Japanese barberry
Podophyllum peltatum L. - wild mandrake
Betula cordifolia Regel - mountain white birch
Betula pumila L. - swamp birch
Betula x sandbergii Britton - Sandberg's birch
Cynoglossum boreale Fernald - northern wild comfrey
Echium vulgare L. - viper's-bugloss
Hackelia deflexa - nodding stickseed
Hydrophyllum virginianum L. - Virginia waterleaf
Lithospermum latifolium Michx. - broad-leaved gromwell
Lithospermum officinale L. - European gromwell
Myosotis scorpioides L. - true forget-me-not
Myosotis sylvatica Ehrh. ex Hoffm. - woodland forget-me-not
Symphytum officinale L. - common comfrey
Arabis pycnocarpa M.Hopkins - hairy rock-cress
Berteroa incana (L.) DC. - hoary-alyssum
Cakile edentula (Bigelow) Hook. - American sea-rocket
Cardamine douglassii Britton - purple spring-cress
Diplotaxis muralis (L.) DC. - stinking wall-rocket
Draba reptans (Lam.) Fernald - common whitlow-grass
Erysimum cheiranthoides L. - worm-seed wallflower
Hesperis matronalis L. - dame's rocket
Iberis umbellata L. - globe candytuft
Rorippa palustris (L.) Besser - common yellow-cress
Sinapis arvensis L. - charlock mustard
Sisymbrium altissimum L. - tall tumble mustard
Thlaspi arvense L. - field pennycress
Turritis glabra L. - tower rock-cress
Campanula rapunculoides L. - rover bellflower
Lobelia inflata L. - Indian-tobacco
Lobelia kalmii L. - Ontario lobelia
Lobelia siphilitica L. - great blue lobelia
Diervilla lonicera Mill. - northern bush-honeysuckle
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
Lonicera X bella Zabel - white-bell honeysuckle
Triosteum aurantiacum E.P.Bicknell - orange-fruit horse-gentian
Triosteum aurantiacum var. aurantiacum - orange-fruit horse-gentian
Agrostemma githago - corn cockle
Arenaria serpyllifolia - thyme-leaved sandwort
Atocion armeria (L.) Raf. - sweet-William silene
Cerastium fontanum - common mouse-ear chickweed
Cerastium nutans - nodding mouse-ear chickweed
Dianthus armeria - Deptford pink
Scleranthus annuus - German knotgrass
Silene antirrhina L. - sleepy silene
Silene csereii Baumg. - glaucous campion
Silene dichotoma - forked catchfly
Silene latifolia Poir. - white cockle
Silene noctiflora L. - sticky cockle
Spergula arvensis L. - corn spurry
Stellaria longifolia Muhl. ex Willd. - long-leaved stitchwort
Stellaria media (L.) Vill. - common chickweed
Celastrus scandens L. - climbing bittersweet
Parnassia glauca Raf. - fen grass-of-Parnassus
Uvularia grandiflora Sm. - large-flowered bellwort
Commelina communis L. - common dayflower
Calystegia sepium (L.) R.Br. - hedge false bindweed
Convolvulus arvensis L. - field bindweed
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
Juniperus communis L. - common juniper
Thuja occidentalis L. - northern white-cedar
Carex sp. L. - Sedge
Carex albursina E.Sheld. - white bear sedge
Carex arctata Boott - drooping woodland sedge
Carex aurea Nutt. - golden-fruited sedge
Carex blanda Dewey - wood sedge
Carex communis var. communis - fibrous-root sedge
Carex comosa Boott - bristly sedge
Carex cryptolepis Mack. - small yellow sedge
Carex deweyana - Dewey's sedge
Carex disperma Dewey - two-seeded bog sedge
Carex eburnea Boott - bristle-leaf sedge
Carex flava L. - yellow sedge
Carex gracillima Schwein. - purple-sheathed graceful sedge
Carex granularis Muhl. ex Willd. - limestone meadow 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 lacustris Willd. - rip-gut sedge
Carex leptonervia (Fernald) Fernald - nerveless woodland sedge
Carex magellanica - boreal bog sedge
Carex nigra (L.) Reichard - smooth black sedge
Carex normalis Mack. - spreading oval 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 prairea Dewey - prairie sedge
Carex projecta Mack. - necklace sedge
Carex pseudocyperus L. - false bristly sedge
Carex radiata (Wahlenb.) Small - straight-styled wood sedge
Carex retrorsa Schwein. - retrorse sedge
Carex siccata Dewey - running savanna sedge
Carex sparganioides Muhl. ex Willd. - loose-headed bracted sedge
Carex stipata - owl-fruit sedge
Carex stricta Lam. - uptight sedge
Carex tenera Dewey - narrow-leaved oval sedge
Carex tonsa var. tonsa - smooth-fruited oak sedge
Carex trichocarpa Willd. - hairy-fruit sedge
Carex trisperma Dewey - three-seeded sedge
Carex tuckermanii Dewey - Tuckerman's sedge
Carex utriculata Boott - Northwest Territory sedge
Carex vesicaria L. - tufted lake sedge
Carex viridula - little green sedge
Cyperus bipartitus Torr. - slender flat sedge
Cyperus schweinitzii Torr. - Schweinitz's flat sedge
Cyperus squarrosus L. - bearded flat sedge
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
Schoenoplectus pungens (Vahl) Palla - common three-square bulrush
Scirpus atrovirens Willd. - dark-green bulrush
Scirpus pendulus Muhl. - rufous bulrush
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
Cystopteris fragilis (L.) Bernh. - northern fragile fern
Cystopteris tenuis (Michx.) Desv. - upland brittle bladder fern
Onoclea sensibilis L. - sensitive fern
Shepherdia canadensis (L.) Nutt. - russet buffalo-berry
Equisetum arvense L. - field horsetail
Equisetum fluviatile L. - water horsetail
Equisetum hyemale - scouring rush horsetail
Equisetum laevigatum A.Braun - smooth scouring rush
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
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 corollata L. - flowering spurge
Euphorbia cyparissias L. - graveyard spurge
Euphorbia glyptosperma Engelm. - ridge-seeded spurge
Lathyrus latifolius L. - perennial pea-vine
Lathyrus palustris L. - slender-stem pea-vine
Lotus corniculatus L. - bird's-foot trefoil
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 arvense L. - rabbit-foot clover
Trifolium campestre Schreb. - pinnate hop clover
Trifolium hybridum L. - alsike clover
Trifolium repens L. - white clover
Vicia sativa - spring vetch
Vicia villosa Roth - winter vetch
Quercus alba L. - 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
Geranium robertianum L. - Robert's geranium
Ribes americanum Mill. - wild black currant
Ribes cynosbati L. - prickly wild gooseberry
Ribes glandulosum Grauer - skunk currant
Ribes hirtellum Michx. - swamp gooseberry
Ribes lacustre (Pers.) Poir. - spiny swamp currant
Ribes missouriense Nutt. - wild gooseberry
Ribes rubrum L. - garden red currant
Ribes triste Pall. - wild red currant
Myriophyllum sibiricum Kom. - short-spike water-milfoil
Myriophyllum spicatum L. - spike water-milfoil
Myriophyllum verticillatum L. - whorled water-milfoil