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Families: 105
Genera: 403
Species: 811 (species rank)
Total Taxa: 830 (including subsp. and var.)

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Viburnum lantana L. - wayfaring-tree
Viburnum lentago L. - sheepberry
Viburnum trilobum Marshall - high-bush cranberry
Alisma triviale Pursh - northern water-plantain
Amaranthus albus L. - white amaranth
Amaranthus blitoides S.Watson - prostrate pigweed
Amaranthus hybridus L. - smooth pigweed
Amaranthus retroflexus L. - wild-beet amaranth
Atriplex patula L. - spear saltbush
Chenopodium glaucum var. glaucum - oak-leaved goosefoot
Chenopodium simplex (Torr.) Raf. - maple-leaved goosefoot
Chenopodium standleyanum Aellen - woodland goosefoot
Allium sp. L. - Garlic
Allium burdickii (Hanes) A.G.Jones - narrow-leaved wild leek
Allium cernuum Roth - nodding wild onion
Rhus glabra L. - smooth sumac
Rhus typhina L. - staghorn sumac
Angelica atropurpurea L. - purple-stem angelica
Cicuta maculata L. - spotted water-hemlock
Conium maculatum L. - poison-hemlock
Daucus carota L. - wild carrot
Eryngium yuccifolium Michx. - rattlesnake-master
Heracleum maximum W.Bartram - American cow-parsnip
Osmorhiza longistylis (Torr.) DC. - smooth sweet cicely
Pastinaca sativa L. - wild parsnip
Sanicula canadensis L. - Canadian sanicle
Sanicula marilandica L. - Maryland sanicle
Zizia aptera (A.Gray) Fernald - heart-leaved meadow-parsnip
Apocynum androsaemifolium L. - spreading dogbane
Asclepias exaltata L. - tall milkweed
Asclepias verticillata L. - whorled milkweed
Asclepias viridiflora Raf. - short green milkweed
Ilex verticillata (L.) A.Gray - common winterberry
Lemna turionifera Landolt - Turion duckweed
Aralia nudicaulis L. - wild sarsaparilla
Aralia racemosa L. - life-of-man
Asarum canadense L. - wild-ginger
Asparagus officinalis L. - garden asparagus
Maianthemum canadense Desf. - 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
Anthemis cotula L. - stinking-cotula
Arnoglossum plantagineum Raf. - prairie Indian-plantain
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
Carduus nutans L. - nodding thistle
Cirsium sp. - Thistle
Cirsium muticum Michx. - swamp thistle
Coreopsis palmata Nutt. - stiff tickseed
Erigeron annuus (L.) Pers. - eastern daisy fleabane
Erigeron philadelphicus - Philadelphia daisy
Eupatorium altissimum L. - tall thoroughwort
Euthamia graminifolia (L.) Nutt. - grass-leaved goldenrod
Eutrochium maculatum L. - spotted Joe-Pye-weed
Helenium autumnale L. - common sneezeweed
Helianthus sp. L. - Sunflower
Helianthus annuus L. - garden sunflower
Helianthus decapetalus L. - thin-leaved sunflower
Helianthus strumosus L. - rough-leaved sunflower
Helianthus tuberosus L. - woodland sunflower
Heliopsis helianthoides (L.) Sweet - sunflower-everlasting
Hieracium umbellatum L. - northern hawkweed
Lactuca canadensis L. - wild lettuce
Lactuca serriola L. - prickly lettuce
Lapsana communis L. - nipplewort
Liatris aspera Michx. - rough gayfeather
Liatris cylindracea Michx. - barellhead gayfeather
Liatris spicata var. spicata - sessile-headed blazing-star
Liatris x steelei Gaiser - Steele's gay-feather
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
Ratibida pinnata (Vent.) Barnhart - pinnate prairie coneflower
Rudbeckia laciniata L. - wild golden-glow
Rudbeckia subtomentosa Pursh - sweet coneflower
Rudbeckia triloba var. triloba - three-lobed coneflower
Silphium integrifolium Michx. - whole-leaf rosinweed
Silphium laciniatum L. - compass-plant
Solidago sp. L. - Goldenrod
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 rigida L. - stiff goldenrod
Solidago speciosa Nutt. - showy goldenrod
Solidago ulmifolia - elm-leaved goldenrod
Sonchus asper (L.) Hill - spiny-leaf sow-thistle
Sonchus oleraceus L. - field sow-thistle
Tragopogon dubius Scop. - yellow salsify
Tragopogon pratensis L. - yellow goat's-beard
Vernonia fasciculata Michx. - smooth ironweed
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 nigra L. - river birch
Corylus americana Walter - American hazelnut
Hydrophyllum virginianum L. - Virginia waterleaf
Lithospermum incisum Lehm. - narrow-leaved puccoon
Lithospermum latifolium Michx. - broad-leaved gromwell
Myosotis verna Nutt. - white forget-me-not
Berteroa incana (L.) DC. - hoary-alyssum
Brassica sp. L. - Mustard
Bunias orientalis L. - Turkish warty-cabbage
Cardamine pensylvanica Muhl. ex Willd. - Pennsylvania bitter-cress
Draba reptans (Lam.) Fernald - common whitlow-grass
Erysimum cheiranthoides L. - worm-seed wallflower
Lepidium densiflorum Schrad. - small peppergrass
Sinapis arvensis L. - charlock mustard
Thlaspi arvense L. - field pennycress
Turritis glabra L. - tower rock-cress
Campanula rapunculoides L. - rover bellflower
Lobelia inflata L. - Indian-tobacco
Lobelia siphilitica L. - great blue lobelia
Lobelia spicata Lam. - spiked lobelia
Triodanis perfoliata (L.) Nieuwl. - round-leaved triodanis
Cannabis sativa L. - marijuana
Celtis occidentalis L. - northern hackberry
Diervilla lonicera Mill. - northern bush-honeysuckle
Dipsacus laciniatus L. - cut-leaved teasel
Lonicera morrowii A.Gray - Morrow's honeysuckle
Lonicera oblongifolia (Goldie) Hook. - swamp fly honeysuckle
Lonicera reticulata Raf. - yellow honeysuckle
Lonicera tatarica L. - Tartarian honeysuckle
Triosteum aurantiacum E.P.Bicknell - orange-fruit horse-gentian
Dianthus armeria - Deptford pink
Paronychia canadensis (L.) A.W.Wood - smooth-forked nailwort
Silene antirrhina L. - sleepy silene
Silene csereii Baumg. - glaucous campion
Silene dichotoma - forked catchfly
Silene latifolia Poir. - white cockle
Stellaria longifolia Muhl. ex Willd. - long-leaved stitchwort
Celastrus scandens L. - climbing bittersweet
Euonymus alatus (Thunb.) Siebold - winged spindle-tree
Parnassia glauca Raf. - fen grass-of-Parnassus
Uvularia grandiflora Sm. - large-flowered bellwort
Commelina communis L. - common dayflower
Tradescantia ohiensis Raf. - smooth spiderwort
Calystegia sepium (L.) R.Br. - hedge false bindweed
Cuscuta cephalanthi Engelm. - buttonbush dodder
Cuscuta coryli Engelm. - hazel dodder
Cuscuta polygonorum Engelm. - smartweed dodder
Cornus alternifolia L.f. - pagoda dogwood
Cornus canadensis L. - dwarf cornel
Cornus rugosa Lam. - round-leaved dogwood
Cornus sericea L. - red osier dogwood
Juniperus virginiana L. - eastern red-cedar
Carex aggregata Mack. - glomerate sedge
Carex bicknellii Britton - Bicknell's sedge
Carex blanda Dewey - wood sedge
Carex brevior (Dewey) Mack. - plains oval sedge
Carex eburnea Boott - bristle-leaf sedge
Carex granularis Muhl. ex Willd. - limestone meadow sedge
Carex gravida L.H.Bailey - long-awned bracted sedge
Carex hirtifolia Mack. - pubescent sedge
Carex jamesii Schwein. - James' sedge
Carex leavenworthii Dewey - Leavenworth's 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 sparganioides Muhl. ex Willd. - loose-headed bracted sedge
Carex stricta Lam. - uptight sedge
Carex trichocarpa Willd. - hairy-fruit sedge
Cyperus bipartitus Torr. - slender flat sedge
Cyperus strigosus L. - straw-colored cyperus
Scirpus atrovirens Willd. - dark-green bulrush
Cystopteris tenuis (Michx.) Desv. - upland brittle bladder fern
Onoclea sensibilis L. - sensitive fern
Woodsia obtusa subsp. obtusa - blunt-lobed woodsia
Equisetum arvense L. - field horsetail
Equisetum laevigatum A.Braun - smooth scouring rush
Equisetum sylvaticum L. - woodland horsetail
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 myrtilloides Michx. - velvet-leaf huckleberry
Euphorbia corollata L. - flowering spurge
Euphorbia nutans Lag. - nodding spurge
Baptisia lactea (Raf.) Thieret - white wild indigo
Baptisia leucophaea Nutt. - plains wild indigo
Dalea sp. L. - Prairie-Clover
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
Lathyrus palustris L. - slender-stem pea-vine
Lespedeza capitata Michx. - round-headed 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
Trifolium arvense L. - rabbit-foot clover
Trifolium campestre Schreb. - pinnate hop clover
Trifolium hybridum L. - alsike clover
Trifolium repens L. - white clover
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 americanum Mill. - wild black currant
Ribes cynosbati L. - prickly wild gooseberry
Ribes missouriense Nutt. - wild gooseberry
Hypericum ascyron L. - great St. John's-wort
Hypericum perforatum L. - St. John's-wort
Hypericum prolificum L. - shrubby St. John's-wort
Hypericum punctatum Lam. - spotted St. John's-wort
Hypoxis hirsuta (L.) Coville - yellow star-grass
Sisyrinchium campestre E.P.Bicknell - prairie blue-eyed-grass
Carya ovata var. ovata - shellbark hickory
Juglans cinerea L. - white walnut
Juglans nigra L. - black walnut
Juncus dudleyi Wiegand - Dudley's rush
Agastache nepetoides (L.) Kuntze - yellow giant hyssop
Hedeoma hispida Pursh - rough pennyroyal
Hedeoma pulegioides (L.) Pers. - American pennyroyal
Leonurus sp. L. - Motherwort
Lycopus sp. L. - Water-Horehound
Lycopus uniflorus Michx. - northern water-horehound
Mentha spicata L. - spearmint
Salvia reflexa Hornem. - Rocky Mountain sage
Scutellaria lateriflora L. - mad-dog skullcap
Scutellaria ovata subsp. ovata - heart-leaved skullcap
Erythronium albidum Nutt. - white trout-lily
Lilium michiganense Farw. - Turk's-cap lily
Linum sulcatum Riddell - grooved yellow flax
Lythrum salicaria L. - spiked loosestrife
Hibiscus trionum L. - flower-of-an-hour
Malva neglecta Wallr. - common mallow
Malva pusilla Sm. - low mallow
Napaea dioica L. - glade mallow
Trillium flexipes Raf. - nodding wake-robin
Menispermum canadense L. - common moonseed
Claytonia virginica L. - Virginia spring-beauty
Morus alba L. - white mulberry