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Families: 112
Genera: 386
Species: 869 (species rank)
Total Taxa: 878 (including subsp. and var.)

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Acorus calamus L. - sweet-flag
Sambucus racemosa - scarlet elderberry
Viburnum acerifolium L. - maple-leaved viburnum
Viburnum lentago L. - sheepberry
Viburnum opulus L. - high-bush cranberry
Viburnum trilobum Marshall - high-bush cranberry
Alisma triviale Pursh - northern water-plantain
Sagittaria sp. L. - Arrowhead
Sagittaria graminea subsp. graminea - grass-leaved sagittaria
Chenopodium capitatum - strawberry-blite
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
Heracleum maximum W.Bartram - American cow-parsnip
Osmorhiza sp. - Sweet-Cicely
Pastinaca sativa L. - wild parsnip
Sanicula marilandica L. - Maryland sanicle
Sium suave Walter - water-parsnip
Apocynum androsaemifolium L. - spreading dogbane
Asclepias exaltata L. - tall milkweed
Asclepias incarnata - swamp 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 racemosum - Solomon's-plume
Maianthemum stellatum (L.) Link - starry false Solomon's-seal
Maianthemum trifolium (L.) Sloboda - three-leaf Solomon's-plume
Ambrosia trifida L. - horse-cane
Antennaria neglecta Greene - field pussy-toes
Anthemis cotula L. - stinking-cotula
Bidens cernua L. - nodding bur-marigold
Bidens frondosa L. - devil's beggar-ticks
Bidens tripartita L. - swamp tickseed
Centaurea nigra L. - lesser knapweed
Coreopsis lanceolata L. - sand tickseed
Crepis tectorum L. - narrow-leaved hawk's-beard
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 giganteus L. - tall sunflower
Helianthus strumosus L. - rough-leaved sunflower
Heliopsis helianthoides (L.) Sweet - sunflower-everlasting
Hieracium caespitosum Dumort. - yellow king-devil
Hieracium scabrum Michx. - sticky hawkweed
Hieracium umbellatum L. - northern hawkweed
Lactuca canadensis L. - wild lettuce
Lactuca serriola L. - prickly lettuce
Lapsana communis L. - nipplewort
Packera aurea (L.) A.Löve & D.Löve - heart-leaved groundsel
Petasites frigidus - northern sweet-colt's-foot
Petasites frigidus var. sagittatus (L.) Fr. - arrow-leaf sweet-colt's-foot
Prenanthes alba L. - white rattlesnakeroot
Rudbeckia hirta - black-eyed Susan
Rudbeckia laciniata L. - wild golden-glow
Solidago altissima L. - late goldenrod
Solidago canadensis L. - common goldenrod
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 arvensis L. - perennial sow-thistle
Sonchus asper (L.) Hill - spiny-leaf sow-thistle
Impatiens capensis Meerb. - spotted touch-me-not
Podophyllum peltatum L. - wild mandrake
Alnus incana - swamp alder
Betula cordifolia Regel - mountain white birch
Betula pumila L. - swamp birch
Betula x sandbergii Britton - Sandberg's birch
Corylus cornuta - beaked hazelnut
Cynoglossum boreale Fernald - northern wild comfrey
Hydrophyllum virginianum L. - Virginia waterleaf
Lithospermum incisum Lehm. - narrow-leaved puccoon
Myosotis arvensis (L.) Hill - field scorpion-grass
Myosotis scorpioides L. - water scorpion-grass
Myosotis sylvatica Ehrh. ex Hoffm. - woodland forget-me-not
Berteroa incana (L.) DC. - hoary-alyssum
Boechera stricta (Graham) Al-Shehbaz - Drummond's rock-cress
Brassica napus L. - Swedish turnip
Cardamine pensylvanica Muhl. ex Willd. - Pennsylvania bitter-cress
Erysimum cheiranthoides L. - worm-seed wallflower
Lepidium densiflorum Schrad. - small peppergrass
Rorippa sp. Scop. - Yellowcress
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 glomerata L. - Dane's blood
Campanula rapunculoides L. - rover bellflower
Lobelia dortmanna L. - water lobelia
Lobelia inflata L. - Indian-tobacco
Lobelia siphilitica L. - great blue lobelia
Diervilla lonicera Mill. - northern bush-honeysuckle
Linnaea borealis - twinflower
Lonicera dioica L. - red honeysuckle
Lonicera hirsuta Eaton - hairy honeysuckle
Lonicera villosa (Michx.) Schult. - mountain fly honeysuckle
Triosteum aurantiacum var. aurantiacum - orange-fruit horse-gentian
Valeriana officinalis L. - garden valerian
Arenaria sp. L. - Sandwort
Arenaria serpyllifolia - thyme-leaved sandwort
Cerastium fontanum - common mouse-ear chickweed
Dianthus armeria - Deptford pink
Dianthus barbatus - sweet-William
Dianthus deltoides - meadow pink
Dianthus plumarius - garden pink
Gypsophila muralis L. - low baby's-breath
Scleranthus annuus - German knotgrass
Silene latifolia Poir. - white cockle
Spergula arvensis L. - corn spurry
Stellaria borealis - northern starwort
Stellaria longifolia Muhl. ex Willd. - long-leaved stitchwort
Stellaria media (L.) Vill. - common chickweed
Celastrus orbiculatus Thunb. - Oriental bittersweet
Celastrus scandens L. - climbing bittersweet
Uvularia grandiflora Sm. - large-flowered bellwort
Calystegia sepium (L.) R.Br. - hedge false bindweed
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 sp. L. - Sedge
Carex arcta Boott - northern clustered sedge
Carex arctata Boott - drooping woodland sedge
Carex assiniboinensis W.Boott - Assiniboine sedge
Carex brunnescens - green bog sedge
Carex canescens L. - silvery 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 crinita - fringed 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 flava L. - yellow sedge
Carex foenea Willd. - bronze-headed oval sedge
Carex gracillima Schwein. - purple-sheathed graceful sedge
Carex gynandra Schwein. - nodding sedge
Carex hirtifolia Mack. - pubescent sedge
Carex houghtoniana Torr. ex Dewey - Houghton's woolly 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 limosa L. - mud sedge
Carex magellanica - boreal bog sedge
Carex michauxiana Boeck. - Michaux's 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 pensylvanica Lam. - Pennsylvania sedge
Carex plantaginea Lam. - plantain-leaved wood 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 rostrata Stokes - northern yellow lake sedge
Carex scoparia var. scoparia - lance-fruited oval sedge
Carex stipata - owl-fruit sedge
Carex stricta Lam. - uptight sedge
Carex tenera Dewey - narrow-leaved oval sedge
Carex tenuiflora Wahlenb. - sparse-flowered sedge
Carex tonsa var. rugosperma (Mack.) Crins - wrinkled-seeded oak sedge
Carex tonsa var. tonsa - smooth-fruited oak sedge
Carex trisperma Dewey - three-seeded sedge
Carex tuckermanii Dewey - Tuckerman's sedge
Carex utriculata Boott - Northwest Territory sedge
Carex vaginata Tauscher - sheathed sedge
Carex vesicaria L. - tufted lake sedge
Carex woodii Dewey - Wood's stiff sedge
Dulichium arundinaceum - three-way sedge
Eleocharis intermedia Schult. - matted spike-rush
Eriophorum sp. L. - Cotton-Grass
Eriophorum tenellum Nutt. - few-nerved cotton-grass
Eriophorum vaginatum L. - tussock cotton-grass
Eriophorum virginicum L. - tawny cotton-grass
Rhynchospora alba (L.) Vahl - white beak-rush
Rhynchospora capillacea Torr. - needle beak sedge
Schoenoplectus torreyi (Olney) Palla - Torrey's three-square bulrush
Scirpus atrocinctus Fernald - black-girdled wool-grass
Scirpus atrovirens Willd. - dark-green bulrush
Scirpus hattorianus Makino - mosquito bulrush
Scirpus pedicellatus Fernald - stalked wool-grass
Pteridium aquilinum - eastern bracken fern
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 tenuis (Michx.) Desv. - upland brittle bladder fern
Onoclea sensibilis L. - sensitive fern
Elatine sp. - Waterwort
Elatine triandra Schkuhr - greater waterwort
Equisetum arvense L. - field horsetail
Equisetum fluviatile L. - water horsetail
Equisetum hyemale - scouring rush horsetail
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 sp. L. - Shinleaf
Pyrola asarifolia - pink 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
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 dubium Sibth. - suckling clover
Trifolium hybridum L. - alsike clover
Trifolium repens L. - white clover
Vicia americana - American vetch
Vicia sativa - spring vetch
Vicia villosa Roth - winter vetch
Quercus alba L. - white oak
Quercus bicolor Willd. - swamp white oak
Quercus rubra L. - northern red oak
Gentiana rubricaulis Schwein. - red-stemmed gentian
Halenia deflexa - spurred-gentian
Geranium bicknellii - northern crane's-bill
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 sibiricum Kom. - short-spike water-milfoil
Myriophyllum spicatum L. - 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
Triadenum fraseri (Spach) Gleason - Fraser's marsh St. John's-wort
Iris versicolor L. - northern blue flag
Sisyrinchium angustifolium Mill. - stout blue-eyed-grass
Sisyrinchium atlanticum E.P.Bicknell - eastern blue-eyed-grass
Sisyrinchium montanum Greene - strict blue-eyed grass
Sisyrinchium strictum E.P.Bicknell - mountain blue-eyed-grass
Isoëtes sp. L. - Quillwort
Isoëtes echinospora - stiff quillwort
Isoëtes lacustris L. - large-spored quillwort
Juglans cinerea L. - white walnut
Juncus articulatus L. - jointed rush
Juncus bufonius L. - toad rush
Juncus canadensis J.Gay - Canadian rush
Juncus effusus L. - soft rush
Juncus nodosus L. - knotted rush
Juncus pelocarpus E.Mey. - brown-fruited rush
Juncus tenuis Willd. - roadside rush
Luzula acuminata - hairy wood rush
Triglochin maritima L. - seaside arrow-grass
Ajuga genevensis L. - standing bugle
Ajuga reptans L. - common bugle
Galeopsis tetrahit L. - hemp-nettle
Lycopus sp. L. - Water-Horehound
Lycopus uniflorus Michx. - northern water-horehound
Monarda fistulosa - wild bergamot
Scutellaria lateriflora L. - mad-dog skullcap
Utricularia cornuta Michx. - naked bladderwort
Utricularia geminiscapa Benj. - twin-stemmed bladderwort
Utricularia intermedia Hayne - northern bladderwort
Utricularia minor L. - small bladderwort
Utricularia vulgaris L. - great bladderwort
Erythronium americanum - yellow trout-lily
Lindernia dubia (L.) Pennell - moist bank pimpernel