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Justicia americana --- Water willow Ruellia humilis --- Wild Petunia Ruellia strepens --- Smooth ruellia Acer ginnala --- Amur maple Acer negundo --- Box elder Acer nigrum --- Black maple Acer rubrum --- Red maple Acer saccharinum --- Silver maple Acer saccharum --- Sugar maple Acer spicatum --- Mountain maple Adoxa moschatellina --- Moschatel Mollugo verticillata --- Carpetweed Amaranthus albus --- Pigweed Amaranthus arenicola --- Amaranthus graecizans --- Prostrate pigweed Amaranthus hybridus --- Green amaranth Amaranthus powellii --- Smooth pigweed Amaranthus retroflexus --- Pigweed Amaranthus rudis --- Amaranthus spinosus --- Spiny pigweed Amaranthus tuberculatus --- Water hemp Froelichia floridana --- Cottonweed Froelichia gracilis --- Cottonweed Rhus aromatica --- Fragrant sumac Rhus copallina --- Dwarf sumac Rhus glabra --- Smooth sumac Rhus typhina --- Staghorn sumac Toxicodendron radicans --- Poison ivy Toxicodendron rydbergii --- Rydberg's poison ivy Asimina triloba --- Paw paw Angelica atropurpurea --- Angelica Berula erecta --- Water parsnip Chaerophyllum procumbens --- Chervil Cicuta bulbifera --- Bulblet water hemlock Cicuta maculata --- Water hemlock Conium maculatum --- Poison hemlock Cryptotaenia canadensis --- Honewort Daucus carota --- Queen Anne's lace Eryngium yuccifolium --- Rattlesnake master Falcaria sioides --- Sickleweed Heracleum lanatum --- Cow parsnip Lomatium foeniculaceum --- Lomatium orientale --- Osmorhiza claytonii --- Sweet cicely Osmorhiza longistylis --- Anise root Oxypolis rigidior --- Cowbane Pastinaca sativa --- Wild parsnip Polytaenia nuttallii --- Prairie parsley Sanicula canadensis --- Black snakeroot Sanicula gregaria --- Common snakeroot Sanicula marilandica --- Black snakeroot Sanicula trifoliata --- Large-fruited black snakeroot Sium suave --- Water parsnip Spermolepis inermis --- Taenidia integerrima --- Yellow pimpernel Thaspium barbinode --- Meadow parsnip Torilis arvensis --- Hedge parsley Zizia aptera --- Heart-leaved meadow parsnip Zizia aptera X aurea --- Zizia aurea --- Golden alexanders Apocynum androsaemifolium --- Spreading dogbane Apocynum cannabinum --- Indian hemp Apocynum sibiricum --- Apocynum X medium --- Intermediate dogbane Vinca minor --- Common periwinkle Ilex verticillata --- Winterberry Aralia nudicaulis --- Wild sarsaparilla Aralia racemosa --- Spikenard Panax quinquefolius --- Ginseng Aristolochia serpentaria --- Virginia snakeroot Asarum canadense --- Wild ginger Asclepias amplexicaulis --- Sand milkweed Asclepias engelmanniana --- Eared milkweed Asclepias exaltata --- Poke milkweed Asclepias hirtella --- Tall green milkweed Asclepias incarnata --- Swamp milkweed Asclepias lanuginosa --- Wooly milkweed Asclepias meadii --- Mead's milkweed Asclepias ovalifolia --- Oval milkweed Asclepias purpurascens --- Purple milkweed Asclepias quadrifolia --- Whorled milkweed Asclepias speciosa --- Showy milkweed Asclepias stenophylla --- Narrow-leaved milkweed Asclepias sullivantii --- Prairie milkweed Asclepias syriaca --- Common milkweed Asclepias tuberosa --- Butterfly weed Asclepias verticillata --- Whorled milkweed Asclepias viridiflora --- Green milkweed Cynanchum laeve --- Bluevine Achillea millefolium --- Western yarrow Ambrosia artemisiifolia --- Common ragweed Ambrosia bidentata --- Ambrosia psilostachya --- Western ragweed Ambrosia trifida --- Giant ragweed Anaphalis margaritacea --- Pearly everlasting Antennaria neglecta --- Pussytoes Antennaria plantaginifolia --- Ladies' tobacco Anthemis arvensis --- Field chamomile Anthemis cotula --- Dog fennel Anthemis tinctoria --- Arctium lappa --- Great burdock Arctium minus --- Common burdock Arctium tomentosum --- Artemisia abrotanum --- Artemisia absinthium --- Artemisia annua --- Annual wormwood Artemisia biennis --- Biennial wormwood Artemisia campestris --- Western sagewort Artemisia dracunculus --- False tarragon Artemisia frigida --- Prairie sagewort Artemisia ludoviciana --- White sage Artemisia serrata --- Artemisia vulgaris --- Common mugwort Aster azureus --- Sky-blue aster Aster brachyactis --- Rayless aster Aster cordifolius --- Blue wood aster Aster drummondii --- Drummond's aster Aster dumosus --- Ricebutton aster Aster ericoides --- Heath aster, Frost aster Aster falcatus --- Aster furcatus --- Forked aster Aster junciformis --- Rush aster Aster laevis --- Smooth blue aster Aster lanceolatus --- Panicled aster Aster lateriflorus --- Side-flowered aster. Aster linariifolius --- Flax-leaved aster Aster macrophyllus --- Big-leaved aster Aster novae-angliae --- New England aster Aster oblongifolius --- Aromatic aster Aster ontarionis --- Ontario aster Aster parviceps --- Aster pilosus --- Hairy aster Aster praealtus --- Willow aster Aster prenanthoides --- Crooked stem aster Aster pubentior --- Aster puniceus --- Swamp aster Aster sagittifolius --- Arrow-leaved aster Aster schreberi --- Schreber's aster Aster sericeus --- Silky aster Aster shortii --- Aster turbinellus --- Aster umbellatus --- Flat-topped aster Aster X amethystinus --- Bidens aristosa --- Swamp marigold Bidens bipinnata --- Spanish needles Bidens cernua --- Nodding bur mariold Bidens connata --- Bidens coronata --- Tickseed sunflower Bidens discoidea --- Swamp beggar-ticks Bidens frondosa --- Beggar-ticks Bidens polylepis --- Bidens tripartita --- Bidens vulgata --- Tall beggar-ticks Boltonia asteroides --- False aster Brickellia eupatorioides --- False boneset Cacalia atriplicifolia --- Indian plantain Cacalia muhlenbergii --- Great Indian plantain Cacalia plantaginea --- Prairie Indian plantain Cacalia suaveolens --- Sweet Indian plantain Carduus acanthoides --- Plumeless thistle Carduus nutans --- Musk thistle Centaurea calcitrapa --- Centaurea cyanus --- Bachelor's button Centaurea diffusa --- Centaurea jacea --- Centaurea maculosa --- Star thistle Centaurea moschata --- Centaurea nigra --- Black knapweed Centaurea repens --- Centaurea scabiosa --- Centaurea solstitialis --- Yellow star thistle Cichorium intybus --- Chicory Cirsium altissimum --- Tall thistle Cirsium arvense --- Canada thistle Cirsium discolor --- Field thistle Cirsium flodmanii --- Cirsium hillii --- Cirsium muticum --- Swamp thistle Cirsium undulatum --- Cirsium vulgare --- Bull thistle Conyza canadensis --- Horseweed Conyza ramosissima --- Low horseweed Coreopsis grandiflora --- Large-flowered coreopsis Coreopsis lanceolata --- Tickseed coreopsis Coreopsis palmata --- Tickseed Coreopsis tinctoria --- Golden coreopsis Coreopsis tripteris --- Tall tickseed Crepis runcinata --- Hawksbeard Crepis tectorum --- Dyssodia papposa --- Fetid marigold Echinacea angustifolia --- Purple coneflower Echinacea pallida --- Pale coneflower Echinacea purpurea --- Purple coneflower Echinops sphaerocephalus --- Globe thistle Eclipta alba --- Yerbo-de-Tajo Erechtites hieracifolia --- Fireweed Erigeron annuus --- Annual fleabane Erigeron philadelphicus --- Fleabane Erigeron pulchellus --- Robin's plantain Erigeron strigosus --- Daisy fleabane Eupatorium altissimum --- Tall thoroughwort Eupatorium maculatum --- Spotted Joe-pye-weed Eupatorium perfoliatum --- Boneset Eupatorium purpureum --- Purple Joe-pye-weed Eupatorium rugosum --- White snakeroot Eupatorium serotinum --- Late boneset Eupatorium sessilifolium --- Upland boneset Euthamia graminifolia --- Gaillardia pulchella --- Blanket flower Galinsoga parviflora --- Peruvian daisy Galinsoga quadriradiata --- Peruvian daisy Gnaphalium obtusifolium --- Everlasting Gnaphalium purpureum --- Early cudweed Grindelia squarrosa --- Gum plant Guitierrezia dracunculoides --- Broomweed Helenium amarum --- Bitterweed Helenium autumnale --- Sneezeweed Helianthus annuus --- Common sunflower Helianthus decapetalus --- Pale sunflower Helianthus divaricatus --- Woodland sunflower Helianthus giganteus --- Tall sunflower Helianthus grosseserratus --- Saw-tooth sunflower Helianthus hirsutus --- Bristly sunflower Helianthus maximiliani --- Maximillian's sunflower Helianthus mollis --- Helianthus occidentalis --- Western sunflower Helianthus petiolaris --- Petioled sunflower Helianthus rigidus --- Prairie sunflower Helianthus strumosus --- Pale-leaved sunflower Helianthus tuberosus --- Jerusalem artichoke Heliopsis helianthoides --- Ox-eye Heterotheca villosa --- Hieracium aurantiacum --- King-devil Hieracium canadense --- Hawkweed Hieracium longipilum --- Hawkweed Hieracium scabrum --- Rough hawkweed Hieracium umbellatum --- Inula Helenium --- Elecampane Iva annua --- Sumpweed Iva xanthifolia --- Marsh elder Krigia biflora --- False dandelion Krigia dandelion --- Krigia virginica --- Dwarf dandelion Lactuca biennis --- Tall blue lettuce Lactuca canadensis --- Wild lettuce Lactuca floridana --- Blue lettuce Lactuca ludoviciana --- Prairie lettuce Lactuca saligna --- Lactuca serriola --- Prickly lettuce Lactuca tatarica --- Leontodon autumnalis --- Fall dandelion Leucanthemum vulgare --- Ox-eye daisy Liatris aspera --- Blazing star Liatris cylindracea --- Blazing star Liatris ligulistylis --- Blazing star Liatris punctata --- Blazing star Liatris pycnostachya --- Prairie blazing star Liatris squarrosa --- Blazing star Lygodesmia juncea --- Skeletonweed Lygodesmia rostrata --- Annual skeletonweed Machaeranthera spinulosa --- Madia satIva --- Tarweed Matricaria chamomilla --- Wild chamomile Matricaria maritima --- Matricaria matricarioides --- Pineapple weed Megalodonta beckii --- Water marigold Nothocalais cuspidata --- Prairie dandelion Onopordum acanthium --- Scotch thistle Parthenium integrifolium --- Wild quinine Picris echiodes --- Ox-tongue Polymnia canadensis --- Leafcup Prenanthes alba --- Rattlesnake-root, white lettuce Prenanthes aspera --- Rough white lettuce Prenanthes racemosa --- Glaucous white lettuce Prionopis ciliata --- Pyrrhopappus carolinianus --- False dandelion Ratibida columnifera --- Long-headed coneflower Ratibida pinnata --- Gray-headed coneflower Rudbeckia hirta --- Black-eyed Susan Rudbeckia laciniata --- Tall coneflower Rudbeckia subtomentosa --- Fragrant coneflower Rudbeckia triloba --- Brown-eyed Susan Senecio aureus --- Golden ragwort Senecio congestus --- Marsh fleabane Senecio glabellus --- Butterweed Senecio integerrimus --- Senecio pauperculus --- Prairie ragwort Senecio plattensis --- Prairie ragwort Senecio pseudaureus --- Senecio vulgaris --- Common groundsel Silphium integrifolium --- Rosinweed Silphium laciniatum --- Compass plant Silphium perfoliatum --- Cup plant Silphium terebinthinaceum --- Prairie dock Solidago canadensis --- Tall goldenrod Solidago flexicaulis --- Zig-zag goldenrod Solidago gigantea --- Smooth goldenrod Solidago hispida --- Solidago missouriensis --- Missouri goldenrod Solidago nemoralis --- Field goldenrod Solidago patula --- Solidago ptarmicoides --- Solidago riddellii --- Riddell's goldenrod Solidago rigida --- Stiff goldenrod Solidago sciaphila --- Cliff goldenrod Solidago speciosa --- Showy goldenrod Solidago uliginoisa --- Swamp goldenrod Solidago ulmifolia --- Elm-leaved goldenrod Sonchus arvensis --- Perennial sow thistle Sonchus asper --- Spiny-leaved sow thistle Sonchus oleraceus --- Common sow thistle Tanacetum vulgare --- Tansy Taraxacum laevigatum --- Red-seeded dandelion Taraxacum officinale --- Common dandelion Tragopogon dubius --- Goat's-beard Tragopogon porrifolius --- Salsify, oyster plant Tragopogon pratensis --- Goat's-beard Verbesina alternifolia --- Wingstem Verbesina encelioides --- Vernonia baldwinii --- Baldwin's ironweed Vernonia fasciculata --- Ironweed Vernonia gigantea --- Tall Ironweed Vernonia missurica --- Missouri ironweed Xanthium spinosum --- Spiny cocklebur Xanthium strumarium --- Cocklebur Impatiens capensis --- Spotted touch-me-not Impatiens pallida --- Pale touch-me-not Berberis thunbergii --- Japanese barberry Berberis vulgaris --- European barberry Caulophyllum thalictroides --- Blue cohosh Jeffersonia diphylla --- Twinleaf Podophyllum peltatum --- Mayapple Alnus rugosa --- Speckled alder Betula alleghaniensis --- Yellow birch Betula nigra --- River birch Betula papyrifera --- Paper birch Betula pumila --- Swamp birch Betula pumila X nigra --- Carpinus caroliniana --- Blue beech Corylus americana --- Hazelnut Corylus cornuta --- Beaked hazel Ostrya virginiana --- Ironwood Campsis radicans --- Trumpet creeper Catalpa bignoniodes --- Common catalpa Catalpa speciosa --- Cigar tree Anchusa azurea --- Alkanet Cynoglossum officinale --- Hound's-tongue Echium vulgare --- Blueweed Hackelia deflexa --- Stickseed Hackelia virginiana --- Stickseed Lappula echinata --- Beggar's-lice Lappula redowskii --- Lithospermum arvense --- Corn-gromwell Lithospermum canescens --- Hoary puccoon Lithospermum carolinense --- Hairy puccoon Lithospermum incisum --- Fringed puccoon Lithospermum latifolium --- American gromwell Mertensia paniculata --- Northern lungwort Mertensia virginica --- Bluebell Myosotis micrantha --- Myosotis verna --- Forget-me-not Onosmodium molle --- False gromwell Alliaria petiolata --- Garlic mustard Alyssum alyssoides --- Arabis canadensis --- Sickle pod, rock cress Arabis divaricarpa --- Purple rock cress Arabis drummondii --- Rock cress Arabis glabra --- Tower mustard Arabis hirsuta --- Arabis laevigata --- Arabis lyrata --- Arabis missouriensis --- Arabis shortii --- Rock cress Armoracia aquatica --- Lake cress Armoracia rusticana --- Horseradish Barbarea vulgaris --- Yellow rocket Berteroa incana --- Hoary alyssum Brassica campestris --- Field mustard Brassica juncea --- Brassica kaber --- Brassica napus --- Turnip Brassica nigra --- Black mustard Brassica oleracea --- Wild cabbage Camelina microcarpa --- Small-fruited false flax Camelina satIva --- False flax Capsella bursa-pastoris --- Shepherd's purse Cardamine bulbosa --- Spring cress Cardamine douglassii --- Purple cress Cardamine parviflora --- Small-flowered bitter cress Cardamine pensylvanica --- Bitter cress Cardaria chalapensis --- Cardaria draba --- Hoary cress Chorispora tenella --- Crossflower Conringia orientalis --- Hare's-ear mustard Dentaria laciniata --- Toothwort Descurainia pinnata --- Tansy mustard Descurainia sophia --- Diplotaxis muralis --- Wall rocket Draba nemorosa --- Draba reptans --- Whitlow grass Draba verna --- Vernal whitlow grass Eruca satIva --- Garden rocket Erucastrum gallicum --- Dog mustard Erysimum asperum --- Western wallflower Erysimum cheiranthoides --- Wormseed mustard Erysimum inconspicuum --- Erysimum repandum --- Hesperis matronalis --- Dame's rocket Iberis umbellata --- Candy tuft Iodanthus pinnatifidus --- Purple rocket Lepidium campestre --- Field cress Lepidium densiflorum --- Peppergrass Lepidium perfoliatum --- Perfoliate peppergrass Lepidium virginicum --- Poor-man's pepper Lesquerella ludoviciana --- Silvery bladder-pod Lobularia maritima --- Sweet alyssum Nasturtium officinale --- Watercress Neslia paniculata --- Ball mustard Raphanus raphanistrum --- Wild radish Raphanus sativus --- Radish Rorippa austriaca --- Austrian field cress Rorippa palustris --- Marsh cress Rorippa prostrata --- Rorippa sessiliflora --- Rorippa sinuata --- Rorippa sylvestris --- Creeping yellow cress Sibara virginica --- Sinapis alba --- White mustard Sinapis arvensis --- Charlock Sisymbrium altissimum --- Tumble mustard Sisymbrium loeselii --- Sisymbrium officinale --- Thlaspi arvense --- Penny cress Opuntia fragilis --- Little prickly pear Opuntia humifusa --- Eastern prickly pear Opuntia macrorhiza --- Prickly pear Callitriche heterophylla --- Water-starwort Callitriche verna --- Water-starwort Campanula americana --- Tall bellflower Campanula aparinoides --- Marsh bellflower Campanula rapunculoides --- Campanula rotundifolia --- Harebell Lobelia cardinalis --- Cardinal flower Lobelia inflata --- Indian tobacco Lobelia kalmii --- Kalm's Lobelia Lobelia siphilitica --- Great Lobelia Lobelia spicata --- Spiked Lobelia Triodanis leptocarpa --- Triodanis perfoliata --- Venus' looking-glass Cleome serrulata --- Stinking clover Polanisia dodecandra --- Clammy weed Polanisia jamesii --- Diervilla lonicera --- Bush honeysuckle Linnaea borealis --- Twinflower Lonicera dioica --- Wild honeysuckle Lonicera morrowi --- Morrow's honeysuckle Lonicera prolifera --- Wild honeysuckle Lonicera sempervirens --- Trumpet honeysuckle Lonicera tartarica --- Tartarian honeysuckle Sambucus canadensis --- Elderberry Sambucus racemosa --- Red-berried elder Symphoricarpos albus --- Snowberry Symphoricarpos occidentalis --- Wolfberry Symphoricarpos orbiculatus --- Coralberry Triosteum aurantiacum --- Horse gentian Triosteum perfoliatum --- Horse gentian Viburnum dentatum --- Southern arrowwood Viburnum lentago --- Nannyberry Viburnum molle --- Arrowwood Viburnum opulus --- Guelder-rose Viburnum prunifolium --- Black haw Viburnum rafinesquianum --- Downy arrowwood Viburnum trilobum --- Highbush cranberry Agrostemma githago --- Corn cockle Arenaria serpyllifolia --- Thyme-leaved sandwort Cerastium arvense --- Field chickweed Cerastium glomeratum --- Clammy chickweed Cerastium nutans --- Nodding chickweed Cerastium vulgatum --- Mouse-ear chickweed Dianthus armeria --- Deptford pink Holosteum umbellatum --- Jagged chickweed Minuartia michauxii --- Rock sandwort Moehringia lateriflora --- Sandwort Myosoton aquaticum --- Giant chickweed Paronychia canadensis --- Tall forked chickweed Paronychia fastigiata --- Low forked chickweed Saponaria officinalis --- Bouncing Bet Silene antirrhina --- Sleepy catchfly Silene cserei --- Silene dichotoma --- Catchfly Silene nivea --- Silene noctiflora --- Night-flowering catchfly Silene pratensis --- White campion Silene stellata --- Starry campion Silene virginica --- Firepink Silene vulgaris --- Bladder campion Stellaria graminea --- Common stitchwort Stellaria longifolia --- Stitchwort Stellaria media --- Common chickweed Vaccaria pyramidata --- Cowherb, cow cockle Celastrus orbiculatus --- Round-leaved bittersweet Celastrus scandens --- Bittersweet Euonymus alatus --- Winged wahoo, burning bush Euonymus atropurpureus --- Wahoo, burning bush Ceratophyllum demersum --- Coontail, hortwort Atriplex patula --- Spearscale Atriplex rosea --- Red orach Chenopodium album --- Lamb's quarters Chenopodium ambrosioides --- Mexican tea Chenopodium berlandieri --- Chenopodium botrys --- Jerusalem oak Chenopodium bushianum --- Chenopodium capitatum --- Strawberry blite Chenopodium desiccatum --- Narrow-leaved goosefoot Chenopodium foggii --- Chenopodium glaucum --- Chenopodium hybridum --- Maple-leaved goosefoot Chenopodium missouriensis --- Chenopodium murale --- Chenopodium polyspermum --- Many-seeded goosefoot Chenopodium rubrum --- Coast blite Chenopodium standleyanum --- Woodland goosefoot Chenopodium strictum --- Chenopodium urbicum --- Corispermum nitidum --- Cycloloma atriplicifolium --- Winged pigweed Kochia scoparia --- Summer cypress Monolepis nuttalliana --- Salsola collina --- Salsola iberica --- Russian thistle Helianthemum bicknellii --- Rockrose Helianthemum canadense --- Hudsonia tomentosa --- False heather Lechea intermedia --- Lechea racemulosa --- Lechea stricta --- Lechea tenuifolia --- Slender-leaved pinweed Lechea villosa --- Hairy pinweed Calystegia sepium --- Morning glory, bindweed Calystegia spithamaea --- Low bindweed Convolvulus arvensis --- European bindweed Cuscuta cephalanthii --- Dodder Cuscuta coryli --- Dodder Cuscuta cuspidata --- Dodder Cuscuta glomerata --- Dodder Cuscuta gronovii --- Dodder Cuscuta indecora --- Dodder Cuscuta pentagona --- Dodder Cuscuta polygonorum --- Dodder Ipomoea coccinea --- Red morning glory Ipomoea hederacea --- Ipomoea lacunosa --- Ipomoea pandurata --- Wild sweet potato Ipomoea purpurea --- Annual morning glory Stylisma pickeringii --- Cornus alternifolia --- Alternate-leaved dogwood Cornus amomum --- Silky dogwood Cornus canadensis --- Bunchberry, dwarf cornel Cornus drummondii --- Rough-leaved dogwood Cornus foemina --- Gray dogwood Cornus rugosa --- Speckled dogwood Cornus stolonifera --- Red-osier dogwood Sedum acre --- Mossy stonecrop Sedum ternatum --- Wild stonecrop --- See Brassicaceae --- Cucurbita foetidissima --- Missouri gourd Echinocystis lobata --- Wild balsam apple Sicyos angulatus --- Bur-cucumber Dipsacus laciniatus --- Cut-leaved teasel Dipsacus sylvestris --- Common teasel Drosera rotundifolia --- Sundew Diospyros virginiana --- Persimmon Elaeagnus angustifolia --- Russian olive Elaeagnus umbellata --- Autumn olive Shepherdia argentea --- Buffalo berry Elatine triandra --- Waterwort Arctostaphylos uva-ursi --- Bearberry Chimaphila umbellata --- Prince's pine Gaylussacia baccata --- Black huckleberry Monotropa hypopithys --- Pine-sap Monotropa uniflora --- Indian pipe Pyrola asarifolia --- Pink Pyrola Pyrola elliptica --- Shinleaf Pyrola secunda --- One-sided Pyrola Vaccinium angustifolium --- Low sweet blueberry Vaccinium myrtilloides --- Velvet-leaf blueberry Acalypha gracilens --- Slender three-seeded mercury Acalypha ostryifolia --- Three-seeded mercury Acalypha rhomboidea --- Three-seeded mercury Acalypha virginica --- Virginia three-seeded mercury Croton capitatus --- Croton glandulosus --- Croton monanthogynus --- Prairie tea Croton texensis --- Texas Croton Crotonopsis elliptica --- Euphorbia commutata --- Wood spurge Euphorbia corollata --- Flowering spurge Euphorbia cyathophora --- Wild poinsettia Euphorbia cyparissias --- Cypress spurge Euphorbia dentata --- Toothed spurge Euphorbia esula --- Leafy spurge Euphorbia falcata --- Falcate spurge Euphorbia geyeri --- Euphorbia glyptosperma --- Euphorbia hexagona --- Euphorbia maculata --- Carpet spurge Euphorbia marginata --- Snow-on-the-mountain Euphorbia missurica --- Euphorbia nutans --- Nodding spurge Euphorbia obtusata --- Blunt-leaved spurge Euphorbia peplus --- Petty spurge Euphorbia prostrata --- Euphorbia serpens --- Euphorbia serpyllifolia --- Euphorbia spathulata --- Euphorbia stictospora --- Amorpha canascens --- Lead plant Amorpha fruticosa --- Indigo bush Amorpha nana --- Fragrant false indigo Amphicarpaea bracteata --- Hog peanut Anthyllis vulneraria --- Apios americana --- Ground-nut Astragalus adsurgens --- Milk vetch Astragalus agrestis --- Milk vetch Astragalus canadensis --- Milk vetch Astragalus crassicarpus --- Ground plum Astragalus distortus --- Bent milk vetch Astragalus flexuosus --- Milk vetch Astragalus lotiflorus --- Milk vetch Astragalus missouriensis --- Milk vetch Baptisia australis --- Wild blue indigo Baptisia bracteata --- Creamy wild indigo Baptisia lactea --- White wild indigo Baptisia tinctoria --- Yellow wild indigo Caragana arborescens --- Siberian pea tree Cassia marilandica --- Wild senna Cercis canadensis --- Redbud Chamaecrista fasciculata --- Partridge pea Coronilla varia --- Crown vetch Crotolaria sagittalis --- Rattle box Dalea candida --- White prairie clover Dalea enneandra --- Dalea leporina --- Foxtail dalea Dalea purpurea --- Purple prairie clover Dalea villosa --- Silky prairie clover Desmanthus illinoensis --- Prairie mimosa Desmodium canadense --- Showy tick-trefoil Desmodium canescens --- Hoary tick-trefoil Desmodium cupsidatum --- Bracted tick-trefoil Desmodium glutinosum --- Pointed tick-trefoil Desmodium illinoense --- Illinois tick-trefoil Desmodium nudiflorum --- Bare-stemmed tick-trefoil Desmodium paniculatum --- Panicled tick-trefoil Desmodium sessilifolium --- Sessile-leaved tick-trefoil Gleditsia triacanthos --- Honey locust Glycine max --- Soybean Glycyrrhiza lepidota --- Wild licorice Gymnocladus dioica --- Kentucky coffee tree Kummerowia stipulacea --- Korean clover Kummerowia striata --- Japanese clover Lathyrus ochroleucus --- Wild pea, vetchling Lathyrus palustris --- Marsh vetchling Lathyrus tuberosus --- Lathyrus venosus --- Veiny pea Lespedeza capitata --- Round-headed bush clover Lespedeza cuneata --- Silky bush clover Lespedeza daurica --- Lespedeza leptostachya --- Prairie bush clover Lespedeza repens --- Creeping bush clover Lespedeza violacea --- Violet bush clover Lespedeza virginica --- Slender bush clover Lotus corniculatus --- Bird's-foot trefoil Lotus purshianus --- Lupinus perennis --- Wild lupine Medicago falcata --- Yellow alfalfa Medicago lupulina --- Black medic Medicago satIva --- Alfalfa MeliLotus alba --- White sweet clover MeliLotus officinalis --- Yellow sweet clover Orbexilum onobrychis --- Oxytropis lambertii --- Locoweed Pediomelum argophyllum --- Silvery scurf-pea Pediomelum esculentum --- Prairie turnip Psoralidium batesii --- Scurfy pea Psoralidium lanceolatum --- Robinia pseudoacacia --- Black locust Schrankia nuttallii --- Sensitive brier Strophostyles helvula --- Strophostyles leiosperma --- Tephrosia virginiana --- Goat's-rue Trifolium arvense --- Rabbit-foot clover Trifolium aureum --- Hop-clover Trifolium campestre --- Low hop-clover Trifolium dubium --- Little hop-clover Trifolium hybridum --- Alsike clover Trifolium incarnatum --- Crimson clover Trifolium pratense --- Red clover Trifolium reflexum --- Buffalo clover Trifolium repens --- White clover Trifolium resupinatum --- Persian clover Vicia americana --- Vetch Vicia cracca --- Cow vetch Vicia satIva --- Narrow-leaved vetch Vicia satIva --- Common vetch Vicia villosa --- Wisteria frutescens --- Castanea dentata --- American chestnut Quercus alba --- White oak Quercus bicolor --- Swamp white oak Quercus borealis --- Northern red oak Quercus ellipsoidalis --- Hill's oak Quercus imbricaria --- Shingle oak Quercus macrocarpa --- Bur oak Quercus marilandica --- Blackjack oak Quercus muehlenbergii --- Chinquapin oak Quercus palustris --- Pin oak Quercus prinoides --- Dwarf chinquapin oak. Quercus stellata --- Post oak Quercus velutina --- Black oak Quercus X bebbiana --- Quercus X bushii --- Quercus X deamii --- Quercus X exacta --- Quercus X fernowii --- Quercus X hawkinsii --- Quercus X leana --- Quercus X paleolithicola --- Quercus x schuettei --- Gentiana alba --- Pale gentian Gentiana andrewsii --- Bottle gentian Gentiana puberulenta --- Downy gentian Gentiana X billingtonii --- Soapwort gentian Gentianella quinquefolia --- Stiff gentian Gentianopsis crinita --- Fringed gentian Gentianopsis procera --- Small fringed gentian Sabatia campestris --- Prairie rose gentian Erodium cicutarium --- Pin clover, stork's bill Geranium bicknellii --- Northern crane's bill Geranium carolinianum --- Cranesbill Geranium maculatum --- Wild Geranium Myriophyllum exalbescens --- American milfoil Myriophyllum heterophyllum --- Water milfoil Myriophyllum pinnatum --- Rough water milfoil Myriophyllum spicatum --- Spiked water milfoil Myriophyllum verticillatum --- Milfoil Proserpinaca palustris --- Mermaid weed Hamamelis virginiana --- Witch hazel Aesculus glabra --- Ohio buckeye Aesculus hippocastanum --- Horsechestnut Hippuris vulgaris --- Mare's-tail Ellisia nyctelea --- Waterpod, wild tomato Hydrophyllum appendiculatum --- Appendaged waterleaf Hydrophyllum virginianum --- Virginia waterleaf Hypericum boreale --- Northern St. John's wort Hypericum canadense --- Canadian St. John's wort Hypericum drummondii --- Nits and lice Hypericum gentianoides --- Pineweed Hypericum majus --- Large St. John's wort Hypericum mutilum --- Weak St. John's wort Hypericum perforatum --- Common St. John's wort Hypericum prolificum --- Shrubby St. John's wort Hypericum punctatum --- Spotted St. John's wort Hypericum pyramidatum --- Giant St. John's wort Hypericum sphaerocarpum --- Round-fruited St. John's wort Triadenum fraseri --- Marsh St. John's wort Carya cordiformis --- Bitternut hickory Carya illinoensis --- Pecan Carya laciniosa --- Kingnut hickory Carya ovata --- Shagbark hickory Carya tomentosa --- Mockernut hickory Juglans cinerea --- Butternut Juglans nigra --- Black walnut Agastache foeniculum --- Blue giant-hyssop Agastache nepetoides --- Yellow giant-hyssop Agastache scrophulariifolia --- Purple giant-hyssop Ballota nigra --- Black horehound Blephilia ciliata --- Pagoda plant Blephilia hirsuta --- Wood mint Dracocephalum parviflorum --- Dragonhead Galeopsis tetrahit --- Hemp nettle Glechoma hederacea --- Creeping Charlie Hedeoma hispidum --- Rough pennyroyal Hedeoma pulegioides --- American pennyroyal Lamium amplexicaule --- Dead nettle, henbit Lamium purpureum --- Purple dead nettle Leonurus cardiaca --- Motherwort Leonurus marrubiastrum --- Leonurus sibiricus --- Lycopus americanus --- Water horehound Lycopus asper --- Lycopus uniflorus --- Northern bugleweed Lycopus virginicus --- Marrubium vulgare --- Horehound Mentha arvensis --- Wild mint Mentha spicata --- Spearmint Mentha X gentilis --- Mentha X piperita --- Peppermint Monarda didyma --- Oswego tea Monarda fistulosa --- Wild bergamot, horsemint Monarda punctata --- Spotted horsemint Nepeta cataria --- Catnip Perilla frutescens --- Beefsteak plant Physostegia parviflora --- Obedient plant Physostegia virginiana --- False dragonhead Prunella vulgaris --- Self heal Pycnanthemum pilosum --- Hairy mountain mint Pycnanthemum tenuifolium --- Slender mountain mint Pycnanthemum virginianum --- Common mountain mint Salvia nemorosa --- Salvia pitcheri --- Pitcher's sage Salvia reflexa --- Rocky mountain sage Salvia sylvestris --- Satureja vulgaris --- Basil Scutellaria galericulata --- Skullcap Scutellaria incana --- Downy skullcap Scutellaria lateriflora --- Mad-dog skullcap Scutellaria leonardii --- Skullcap Scutellaria nervosa --- Skullcap Scutellaria ovata --- Skullcap Scutellaria parvula --- Skullcap Stachys aspera --- Hedge nettle Stachys palustris --- Woundwort Stachys tenuifolia --- Hedge nettle Teucrium canadense --- Wood sage Teucrium canadense --- American germander Trichostema brachiatum --- False pennyroyal Trichostema dichotomum --- Blue curls Sassafras albidum --- Sassafras Utricularia gibba --- Humped bladderwort Utricularia intermedia --- Flat-leaved bladderwort Utricularia minor --- Small bladderwort Utricularia vulgaris --- Common bladderwort Floerkea proserpinacoides --- False mermaid Linum medium --- Wild flax Linum perenne --- Flax Linum rigidum --- Stiff flax Linum sulcatum --- Wild flax Linum usitatissimum --- Cultivated flax Mentzelia decapetala --- Sand lily Ammannia coccinea --- Toothcup Ammannia robusta --- Cuphea viscosissima --- Waxweed Decodon verticillatus --- Swamp loosestrife Didiplis diandra --- Water purslane Lythrum alatum --- Winged loosestrife Lythrum salicaria --- Purple loosestrife Rotala ramosior --- Toothcup Liriodendron tulipifera --- Tulip tree Abutilon theophrastii --- Velvet leaf Alcea rosea --- Hollyhock Callirhoe alcaeoides --- Poppy mallow Callirhoe bushii --- Poppy mallow Callirhoe involucrata --- Purple poppy mallow Callirhoe triangulata --- Clustered loosestrife Hibiscus laevis --- Halberd-leaved rose mallow Hibiscus trionum --- Flower-of-an-hour Malva neglecta --- Cheeses Malva parviflora --- Little mallow Malva rotundifolia --- Round-leaved mallow Malva sylvestris --- High mallow Malva verticillata --- Mallow Malvastrum hispidum --- Napaea dioica --- Glade mallow Sida spinosa --- Prickly mallow Sphaeralcea coccinea --- Scarlet mallow Proboscidea louisianica --- Unicorn plant Rhexia virginica --- Meadow beauty Menispermum canadense --- Moonseed Menyanthes trifoliata --- Buckbean Cannabis sativa --- Hemp, marijuana Humulus japonicus --- Japanese hops Humulus lupulus --- Common hops Maclura pomifera --- Osage orange Morus alba --- Chinese mulberry Morus rubra --- Red mulberry Mirabilis albida --- Pale four-o'clock Mirabilis hirsuta --- Hairy four-o'clock Mirabilis nyctaginea --- Wild four-o'clock Brasenia schreberi --- Watershield Nelumbo lutea --- American Lotus Nuphar luteum --- Yellow water lily Nymphaea tuberosa --- White water lily Fraxinus americana --- White ash Fraxinus nigra --- Black ash Fraxinus pennsylvanica --- Red ash Fraxinus quadrangulata --- Blue ash Syringa vulgaris --- Lilac Calylophus serrulatus --- Toothed evening primrose Circaea alpina --- Enchanter's nightshade Circaea lutetiana --- Enchanter's nightshade Epilobium angustifolium --- Fireweed Epilobium ciliatum --- Willow herb Epilobium coloratum --- Cinnamon willowherb Epilobium leptophyllum --- Bog willowherb Epilobium strictum --- Willow herb Epilobium X wisconsinense --- Willow herb Gaura biennis --- Gaura coccinea --- Gaura parviflora --- Ludwigia alternifolia --- Seedbox Ludwigia palustris --- Water purslane Ludwigia peploides --- False loosestrife Ludwigia polycarpa --- False loosestrife Oenothera biennis --- Evening primrose Oenothera laciniata --- Ragged evening primrose Oenothera parviflora --- Evening primrose Oenothera perennis --- Small sundrops Oenothera pilosella --- Prairie sundrops Oenothera rhombipetala --- Sand primrose Oenothera speciosa --- Showy evening primrose Oenothera villosa --- Gray evening primrose Conopholis americana --- Cancer-root, squaw-root Orobanche fasciculata --- Clustered broomrape Orobanche ludoViciana --- Broomrape Orobanche uniflora --- One-flowered cancer-root Oxalis dillenii --- Yellow wood sorrel Oxalis stricta --- Yellow wood sorrel Oxalis violacea --- Violet wood sorrel Adlumia fungosa --- Argemone albiflora --- Prickly poppy Argemone mexicana --- Mexican poppy Argemone polyanthemos --- Chelidonium majus --- Shallow-wort, celandine Corydalis aurea --- Golden Corydalis Corydalis curvisiliqua --- Corydalis micrantha --- Slender fumewort Corydalis sempervirens --- Pink Corydalis Dicentra canadensis --- Squirrel corn Dicentra cucullaria --- Dutchman's breeches Fumaria officinalis --- Fumitory Sanguinaria canadensis --- Bloodroot Phryma leptostachya --- Lopseed Phytolacca americana --- Pokeweed Plantago aristata --- Bracted plantain Plantago cordata --- Plantain Plantago indica --- Plantain Plantago lanceolata --- Buckhorn plantain Plantago major --- Plantain Plantago patagonica --- Plantain Plantago rugelii --- Common plantain Plantago virginica --- Plantain Platanus occidentalis --- Sycamore Collomia linearis --- Ipomopsis rubra --- Standing cypress Navarretia intertexta --- Phlox bifida --- Cleft plox Phlox divaricata --- Sweet William Phlox maculata --- Phlox paniculata --- Garden Phlox Phlox pilosa --- Prairie Phlox Phlox subulata --- Moss-pink Polemonium reptans --- Jacob's ladder Polygala cruciata --- Milkwort Polygala incarnata --- Pink milkwort Polygala polygama --- Purple milkwort Polygala sanguinea --- Field milkwort Polygala senega --- Seneca snakeroot Polygala verticillata --- Whorled milkwort Fagopyrum esculentum --- Buckwheat Polygonella articulata --- Polygonum achoreum --- Polygonum amphibium --- Waste smartweed Polygonum aviculare --- Knotweed Polygonum cespitosum --- Creeping smartweed Polygonum Convolvulus --- Black bindweed Polygonum cuspidatum --- Japanese bamboo Polygonum douglasii --- Polygonum erectum --- Polygonum hydropiper --- Polygonum hydropiperoides --- Polygonum lapathifolium --- Polygonum orientale --- Polygonum pensylvanicum --- Polygonum persicaria --- Lady's thumb Polygonum punctatum --- Water smartweed Polygonum ramosissimum --- Bushy knotweed Polygonum sagittatum --- Tearthumb Polygonum scandens --- Climbing false buckwheat Polygonum tenue --- Polygonum virginianum --- Jumpseed Rumex acetosella --- Red sorrel Rumex altissimus --- Rumex crispus --- Curly dock Rumex maritimus --- Rumex mexicanus --- Rumex obtusifolius --- Bitter dock Rumex occidentalis --- Rumex orbiculatus --- Rumex patientia --- Rumex venosus --- Rumex verticillatus --- Claytonia virginica --- Spring beauty Montia chamissoi --- Portulaca grandiflora --- Moss-rose Portulaca oleracea --- Common purslane Talinum parviflorum --- Prairie fameflower Talinum rugospermum --- Fameflower Anagallis arvensis --- Androsace occidentalis --- Rock jasmine Dodecatheon amethystinum --- Jeweled shooting star Dodecatheon meadia --- Shooting star Lysimachia ciliata --- Fringed loosestrife Lysimachia clethroides --- Loosestrife Lysimachia hybrida --- Loosestrife Lysimachia lanceolata --- Loosestrife Lysimachia nummularia --- Moneywort Lysimachia punctata --- Loosestrife Lysimachia quadriflora --- Loosestrife Lysimachia terrestris --- Swamp loosestrife Lysimachia thyrsiflora --- Loosestrife Primula mistassinica --- Bird's-eye primrose Aconitum noveboracense --- Northern wild monkshood Actaea pachypoda --- White baneberry Actaea rubra --- Red baneberry Anemone canadensis --- Canada Anemone Anemone caroliniana --- Carolina Anemone Anemone cylindrica --- Thimbleweed Anemone quinquefolia --- Wood Anemone Anemone virginiana --- Tall Anemone Aquilegia canadensis --- Columbine Caltha palustris --- Marsh marigold Cimicifuga racemosa --- Bugbane Clematis occidentalis --- Clematis pitcheri --- Leather flower Clematis virginiana --- Virgin's bower Consolida ambigua --- Delphinium carolinianum --- Delphinium tricorne --- Dwarf larkspur Delphinium virescens --- Prairie larkspur Hepatica nobilis --- Liverleaf Hepatica nobilis --- Round-lobed liverleaf Hydrastis canadensis --- Golden seal Isopyrum biternatum --- False rue Anemone Myosurus minimus --- Mousetail Pulsatilla patens --- Pasque flower Ranunculus abortivus --- Small-flowered crowfoot Ranunculus acris --- Ranunculus aquatilis --- Ranunculus circinatus --- Ranunculus cymbalaria --- Seaside crowfoot Ranunculus fascicularis --- Early buttercup Ranunculus flabellaris --- Yellow water crowfoot Ranunculus gmelinii --- Ranunculus longirostris --- White water crowfoot Ranunculus pensylvanicus --- Bristly crowfoot Ranunculus recurvatus --- Hooked buttercup Ranunculus repens --- Creeping buttercup Ranunculus rhomboideus --- Prairie buttercup Ranunculus sceleratus --- Cursed crowfoot Ranunculus septentrionalis --- Swamp buttercup Ranunculus testiculatus --- Thalictrum dasycarpum --- Purple meadow-rue Thalictrum dioicum --- Early meadow-rue Thalictrum revolutum --- Waxy meadow-rue Thalictrum thalictroides --- Rue Anemone Reseda luteola --- Dyer's rocket Ceanothus americanus --- New Jersey tea Ceanothus herbaceus --- Redroot Rhamnus alnifolia --- Alder buckthorn Rhamnus cathartica --- Common buckthorn Rhamnus davurica --- Rhamnus frangula --- Glossy buckthorn Rhamnus lanceolata --- Lance-leaved buckthorn Agrimonia eupatoria --- Agrimonia gryposepala --- Tall agrimony Agrimonia parviflora --- Swamp agrimony Agrimonia pubescens --- Soft agrimony Agrimonia striata --- Amelanchier alnifolia --- Amelanchier arborea --- Serviceberry Amelanchier humilis --- Amelanchier interior --- Amelanchier sanguinea --- Aronia melanocarpa --- Black chokeberry Aruncus dioicus --- Goat's beard Crataegus calpodendron --- Crataegus chrysocarpa --- Crataegus coccinea --- Crataegus crus-galli --- Cockspur hawthorn Crataegus disperma --- Crataegus margaretta --- Crataegus mollis --- Crataegus pruinosa --- Crataegus punctata --- Crataegus succulenta --- Filipendula rubra --- Queen of the prairie Fragaria vesca --- Woodland strawberry Fragaria virginiana --- Wild strawberry Geum aleppicum --- Yellow avens Geum canadense --- White avens Geum laciniatum --- Rough avens Geum triflorum --- Prairies smoke Geum vernum --- Spring avens Malus ioensis --- Wild crab Malus sylvestris --- Apple Physocarpus opulifolius --- Ninebark Potentilla anserina --- Silverweed Potentilla argentea --- Potentilla arguta --- Potentilla fruticosa --- Shrubby cinquefoil Potentilla intermedia --- Potentilla norvegica --- Norwegian cinquefoil Potentilla palustris --- Marsh cinquefoil Potentilla paradoxa --- Bushy cinquefoil Potentilla pensylvanica --- Potentilla recta --- Sulphur cinquefoil Potentilla rivalis --- Brook cinquefoil Potentilla simplex --- Common cinquefoil Potentilla tridentata --- Three-toothed cinquefoil Prunus americana --- Wild plum Prunus besseyi --- Dwarf cherry Prunus hortulana --- Hortulan plum Prunus mexicana --- Big-tree plum Prunus nigra --- Canada plum Prunus pensylvanica --- Pin cherry Prunus persica --- Peach Prunus pumila --- Sand cherry Prunus serotina --- Wild black cherry Prunus virginiana --- Choke cherry Pyrus communis --- Pear Rosa acicularis --- Rosa arkansana --- Sunshine rose Rosa blanda --- Meadow rose Rosa carolina --- Rosa eglanteria --- Sweetbriar rose Rosa multiflora --- Multiflora rose Rosa palustris --- Swamp rose Rosa setigera --- Prairie rose Rosa woodsii --- Rubus allegheniensis --- Blackberry Rubus flagellaris --- Dewberry Rubus hispidus --- Dewberry Rubus idaeus --- Cultivated red raspberry Rubus occidentalis --- Black raspberry Rubus pubescens --- Rubus strigosus --- Wild red raspberry Sanguisorba annua --- Sorbaria sorbifolia --- False spirea Sorbus aucuparia --- Mountain ash Spirea alba --- Meadowsweet Cephalanthus occidentalis --- Buttonbush Diodia teres --- Buttonweed Galium aparine --- Cleavers Galium asprellum --- Rough bedstraw Galium boreale --- Northern bedstraw Galium circaezans --- Galium concinnum --- Shining bedstraw Galium labradoricum --- Bog bedstraw Galium obtusum --- Wild madder Galium tinctorium --- Stiff bedstraw Galium trifidum --- Small bedstraw Galium triflorum --- Sweet-scented bedstraw Galium verum --- Yellow bedstraw Hedyotis crassifolia --- Bluets Hedyotis nigricans --- Mitchella repens --- Partridge berry Ptelea trifoliata --- Wafer ash Zanthoxylum americanum --- Prickly ash Populus alba --- Silver poplar Populus balsamifera --- Balsam poplar Populus deltoides --- Cottonwood Populus grandidentata --- Big-tooth aspen Populus nigra --- Lombardy poplar Populus tremuloides --- Quaking aspen Populus X rouleauiana --- Salix alba --- White willow Salix amygdaloides --- Peach-leaved willow Salix babylonica --- Weeping willow Salix bebbiana --- Beaked willow Salix candida --- Sage willow Salix discolor --- Pussy willow Salix exigua --- Sandbar willow Salix fragilis --- Crack willow Salix humilis --- Prairie willow Salix lucida --- Shining willow Salix nigra --- Black willow Salix pedicellaris --- Bog willow Salix pentandra --- Bay-leaved willow Salix petiolaris --- Salix purpurea --- Purple willow Salix rigida --- Salix sericea --- Silky willow Salix X subsericea --- Comandra umbellata --- Bastard toadflax Chrysosplenium iowense --- Golden saxifrage Heuchera americana --- Alumroot Heuchera richardsonii --- Alumroot Mitella diphylla --- Bishop's cap Mitella nuda --- Small bishop's cap Parnassia glauca --- Grass of Parnassus Penthorum sedoides --- Ditch stonecrop Philadelphus pubescens --- Mock orange Ribes americanum --- Wild black currant Ribes cynosbati --- Prickly gooseberry Ribes hirtellum --- Ribes hudsonianum --- Northern currant Ribes missouriense --- Wild gooseberry Ribes odoratum --- Buffalo currant Ribes sativum --- Garden currant Saxifraga forbesii --- Forbes' saxifrage Saxifraga pensylvanica --- Swamp saxifrage Sullivantia sullivantii --- Agalinis aspera --- Agalinis gattingeri --- Agalinis paupercula --- Agalinis purpurea --- Agalinis skinneriana --- Agalinis tenuifolia --- Aureolaria grandiflora --- Yellow false foxglove Aureolaria pedicularia --- Clammy false foxglove Bacopa rotundifolia --- Water hyssop Besseya bullii --- Kittentails Castilleja coccinea --- Indian paintbrush Castilleja sessiliflora --- Downy painted cup Chaenorrhinum minus --- Dwarf snapdragon Chelone glabra --- White turtlehead Chelone obliqua --- Pink turtlehead Collinsia verna --- Blue-eyed Mary Dasistoma macrophylla --- Gratiola neglecta --- Hedge hyssop Gratiola virginiana --- Leucospora multifida --- Linaria canadensis --- Toadflax Linaria macedonica --- Linaria vulgaris --- Butter & eggs Lindernia anagallidea --- False pimpernel Lindernia dubia --- Yellowseed false pimpernel Mimulus alatus --- Winged monkey flower Mimulus glabratus --- Yellow monkey flower Mimulus ringens --- Monkey flower Pedicularis canadensis --- Lousewort Pedicularis lanceolata --- Swamp lousewort Penstemon albidus --- Beardtongue Penstemon cobaea --- Beardtongue Penstemon digitalis --- Foxglove Penstemon Penstemon gracilis --- Beardtongue Penstemon grandiflorus --- Large-flowered beardtongue Penstemon pallidus --- Pale beardtongue Penstemon tubiflorus --- Beardtongue Scrophularia lanceolata --- Scrophularia marilandica --- Tomanthera auriculata --- Verbascum blattaria --- Moth mullein Verbascum lychnitis --- White mullein Verbascum phlomoides --- Verbascum thapsus --- Common mullein Veronica agretis --- Field speedwell Veronica americana --- American brookline Veronica anagallis-aquatica --- Water speedwell Veronica arvensis --- Corn speedwell Veronica catenata --- Water speedwell Veronica officinalis --- Common speedwell Veronica peregrina --- Veronica persica --- Veronica scutellata --- Marsh speedwell Veronica serpyllifolia --- Veronicastrum virginicum --- Culver's root Ailanthus altissima --- Tree of heaven Datura stramonium --- Jimsonweed Lycium halimifolium --- Matrimony vine Lycopersicon esculentum --- Tomato Nicandra physalodes --- Apple of Peru Petunia axillaris --- Petunia Physalis heterophylla --- Ground cherry Physalis ixocarpa --- Tomatillo Physalis pubescens --- Annual ground cherry Physalis pubescens --- Strawberry tomato Physalis virginiana --- Ground cherry Solanum americanum --- Black nightshade Solanum carolinense --- Horse nettle Solanum dulcamara --- European bittersweet Solanum interius --- Plains black nightshade Solanum rostratum --- Buffalo bur Staphylea trifolia --- Bladdernut Dirca palustris --- Leatherwood Thymelaea passerina --- Tilia americana --- Basswood Tilia heterophylla --- White basswood Celtis occidentalis --- Hackberry Ulmus americana --- American elm Ulmus pumila --- Siberian elm Ulmus rubra --- Red elm Ulmus thomasii --- Rock elm Boehmeria cylindrica --- Bog hemp Laportea canadensis --- Wood nettle Parietaria pensylvanica --- Pellitory Pilea fontana --- Bog clearweed Pilea pumila --- Clearweed Urtica dioica --- Stinging nettle Urtica urens --- Valeriana edulis --- Valerian Valeriana officinalis --- Garden heliotrope Phyla lanceolata --- Fogfruit Verbena bracteata --- Creeping vervain Verbena canadensis --- Verbena hastata --- Blue vervain Verbena simplex --- Verbena stricta --- Hoary vervain Verbena urticifolia --- White vervain Verbena X blanchardi --- Verbena X deamii --- Verbena X engelmannii --- Verbena X moechina --- Verbena X rydbergii --- Hybanthus concolor --- Green violet Viola adunca --- Viola canadensis --- Viola incognita --- Viola lanceolata --- Lance-leaved violet Viola macloskeyi --- Viola missouriensis --- Viola missouriensis X V. sororia --- Viola nephrophylla --- Bog violet Viola nephrophylla X V. sororia --- Viola pedata --- Bird's-foot violet Viola pedatifida --- Prairie violet Viola pratincola --- Common blue violet Viola pratincola X V. pedatifida --- Viola pubescens --- Downy yellow violet Viola rafinesquii --- Wild pansy Viola renifolia --- Kidney-leaved violet Viola sagittata --- Arrow-leaved violet Viola sagittata X V. pedatifida --- Viola sororia --- Hairy blue violet Viola striata --- Viola tricolor --- Garden pansy Viola viarum --- Plains violet Viola X bernardii --- Viola X napae --- Viola X sublanceolata --- Ampelopsis cordata --- Raccoon grape Parthenocissus quinquefolia --- Virginia creeper Parthenocissus vitacea --- Woodbine Vitis aestivalis --- Summer grape Vitis cinerea --- Winter grape, fox grape Vitis riparia --- Riverbank grape Vitis vulpina --- Frost grape Tribulis terrestris --- Puncture-weed, caltrop

... Abutilon theophrastii --- Velvet leaf Acalypha gracilens --- Slender three-seeded mercury Acalypha ostryifolia --- Three-seeded mercury Acalypha rhomboidea --- Three-seeded mercury Acalypha virginica --- Virginia three-seeded mercury Acer ginnala --- Amur maple Acer negundo --- Box elder Acer nigrum --- Black maple Acer rubrum --- Red maple Acer saccharinum --- Silver maple Acer saccharum --- Sugar maple Acer spicatum --- Mountain maple Achillea millefolium --- Western yarrow Aconitum noveboracense --- Northern wild monkshood Actaea pachypoda --- White baneberry Actaea rubra --- Red baneberry Adlumia fungosa --- Adoxa moschatellina --- Moschatel Aesculus glabra --- Ohio buckeye Aesculus hippocastanum --- Horsechestnut Agalinis aspera --- Agalinis gattingeri --- Agalinis paupercula --- Agalinis purpurea --- Agalinis skinneriana --- Agalinis tenuifolia --- Agastache foeniculum --- Blue giant-hyssop Agastache nepetoides --- Yellow giant-hyssop Agastache scrophulariifolia --- Purple giant-hyssop Agrimonia eupatoria --- Agrimonia gryposepala --- Tall agrimony Agrimonia parviflora --- Swamp agrimony Agrimonia pubescens --- Soft agrimony Agrimonia striata --- Agrostemma githago --- Corn cockle Ailanthus altissima --- Tree of heaven Alcea rosea --- Hollyhock Alliaria petiolata --- Garlic mustard Alnus rugosa --- Speckled alder Alyssum alyssoides --- Amaranthus albus --- Pigweed Amaranthus arenicola --- Amaranthus graecizans --- Prostrate pigweed Amaranthus hybridus --- Green amaranth Amaranthus powellii --- Smooth pigweed Amaranthus retroflexus --- Pigweed Amaranthus rudis --- Amaranthus spinosus --- Spiny pigweed Amaranthus tuberculatus --- Water hemp Ambrosia artemisiifolia --- Common ragweed Ambrosia bidentata --- Ambrosia psilostachya --- Western ragweed Ambrosia trifida --- Giant ragweed Amelanchier alnifolia --- Amelanchier arborea --- Serviceberry Amelanchier humilis --- Amelanchier interior --- Amelanchier sanguinea --- Ammannia coccinea --- Toothcup Ammannia robusta --- Amorpha canascens --- Lead plant Amorpha fruticosa --- Indigo bush Amorpha nana --- Fragrant false indigo Ampelopsis cordata --- Raccoon grape Amphicarpaea bracteata --- Hog peanut Anagallis arvensis --- Scarlet pimpernel Anaphalis margaritacea --- Pearly everlasting Anchusa azurea --- Alkanet Androsace occidentalis --- Rock jasmine Anemone canadensis --- Canada Anemone Anemone caroliniana --- Carolina Anemone Anemone cylindrica --- Thimbleweed Anemone quinquefolia --- Wood Anemone Anemone virginiana --- Tall Anemone Angelica atropurpurea --- Angelica Antennaria neglecta --- Pussytoes Antennaria plantaginifolia --- Ladies' tobacco Anthemis arvensis --- Field chamomile Anthemis cotula --- Dog fennel Anthemis tinctoria --- Anthyllis vulneraria --- Apios americana --- Ground-nut Apocynum andRosaemifolium --- Spreading dogbane Apocynum cannabinum --- Indian hemp Apocynum sibiricum --- Apocynum X medium --- Intermediate dogbane Aquilegia canadensis --- Columbine Arabis canadensis --- Sickle pod, rock cress Arabis divaricarpa --- Purple rock cress Arabis drummondii --- Rock cress Arabis glabra --- Tower mustard Arabis hirsuta --- Arabis laevigata --- Arabis lyrata --- Arabis missouriensis --- Arabis shortii --- Rock cress Aralia nudicaulis --- Wild sarsaparilla Aralia racemosa --- Spikenard Arctium lappa --- Great burdock Arctium minus --- Common burdock Arctium tomentosum --- Arctostaphylos uva-ursi --- Bearberry Arenaria serpyllifolia --- Thyme-leaved sandwort Argemone albiflora --- Prickly poppy Argemone mexicana --- Mexican poppy Argemone polyanthemos --- Aristolochia serpentaria --- Virginia snakeroot Armoracia aquatica --- Lake cress Armoracia rusticana --- Horseradish Aronia melanocarpa --- Black chokeberry Artemisia abrotanum --- Artemisia absinthium --- Artemisia annua --- Annual wormwood Artemisia biennis --- Biennial wormwood Artemisia campestris --- Western sagewort Artemisia dracunculus --- False tarragon Artemisia frigida --- Prairie sagewort Artemisia ludoviciana --- White sage Artemisia serrata --- Artemisia vulgaris --- Common mugwort Aruncus dioicus --- Goat's beard Asarum canadense --- Wild ginger Asclepias amplexicaulis --- Sand milkweed Asclepias engelmanniana --- Eared milkweed Asclepias exaltata --- Poke milkweed Asclepias hirtella --- Tall green milkweed Asclepias incarnata --- Swamp milkweed Asclepias lanuginosa --- Wooly milkweed Asclepias meadii --- Mead's milkweed Asclepias ovalifolia --- Oval milkweed Asclepias purpurascens --- Purple milkweed Asclepias quadrifolia --- Whorled milkweed Asclepias speciosa --- Showy milkweed Asclepias stenophylla --- Narrow-leaved milkweed Asclepias sullivantii --- Prairie milkweed Asclepias syriaca --- Common milkweed Asclepias tuberosa --- Butterfly weed Asclepias verticillata --- Whorled milkweed Asclepias viridiflora --- Green milkweed Asimina triloba --- Paw paw Aster azureus --- Sky-blue aster Aster brachyactis --- Rayless aster Aster cordifolius --- Blue wood aster Aster drummondii --- Drummond's aster Aster dumosus --- Ricebutton aster Aster ericoides --- Heath aster, Frost aster Aster falcatus --- Aster furcatus --- Forked aster Aster junciformis --- Rush aster Aster laevis --- Smooth blue aster Aster lanceolatus --- Panicled aster Aster lateriflorus --- Side-flowered aster. Aster linariifolius --- Flax-leaved aster Aster macrophyllus --- Big-leaved aster Aster novae-angliae --- New England aster Aster oblongifolius --- Aromatic aster Aster ontarionis --- Ontario aster Aster parviceps --- Aster pilosus --- Hairy aster Aster praealtus --- Willow aster Aster prenanthoides --- Crooked stem aster Aster pubentior --- Aster puniceus --- Swamp aster Aster sagittifolius --- Arrow-leaved aster Aster schreberi --- Schreber's aster Aster sericeus --- Silky aster Aster shortii --- Aster turbinellus --- Aster umbellatus --- Flat-topped aster Aster X amethystinus --- Astragalus adsurgens --- Milk vetch Astragalus agrestis --- Milk vetch Astragalus canadensis --- Milk vetch Astragalus crassicarpus --- Ground plum Astragalus distortus --- Bent milk vetch Astragalus flexuosus --- Milk vetch Astragalus lotiflorus --- Milk vetch Astragalus missouriensis --- Milk vetch Atriplex patula --- Spearscale Atriplex rosea --- Red orach Aureolaria grandiflora --- Yellow false foxglove Aureolaria pedicularia --- Clammy false foxglove Bacopa rotundifolia --- Water hyssop Ballota nigra --- Black horehound Baptisia australis --- Wild blue indigo Baptisia bracteata --- Creamy wild indigo Baptisia lactea --- White wild indigo Baptisia tinctoria --- Yellow wild indigo Barbarea vulgaris --- Yellow rocket Berberis thunbergii --- Japanese barberry Berberis vulgaris --- European barberry Berteroa incana --- Hoary alyssum Berula erecta --- Water parsnip Besseya bullii --- Kittentails Betula alleghaniensis --- Yellow birch Betula nigra --- River birch Betula papyrifera --- Paper birch Betula pumila --- Swamp birch Betula pumila X nigra --- Bidens aristosa --- Swamp marigold Bidens bipinnata --- Spanish needles Bidens cernua --- Nodding bur mariold Bidens connata --- Bidens coronata --- Tickseed sunflower Bidens discoidea --- Swamp beggar-ticks Bidens frondosa --- Beggar-ticks Bidens polylepis --- Bidens tripartita --- Bidens vulgata --- Tall beggar-ticks Blephilia ciliata --- Pagoda plant Blephilia hirsuta --- Wood mint Boehmeria cylindrica --- Bog hemp Boltonia asteroides --- False aster Brasenia schreberi --- Watershield Brassica campestris --- Field mustard Brassica juncea --- Brassica kaber --- Brassica napus --- Turnip Brassica nigra --- Black mustard Brassica oleracea --- Wild cabbage Brickellia eupatorioides --- False boneset Cacalia atriplicifolia --- Indian plantain Cacalia muhlenbergii --- Great Indian plantain Cacalia plantaginea --- Prairie Indian plantain Cacalia suaveolens --- Sweet Indian plantain Callirhoe alcaeoides --- Poppy mallow Callirhoe bushii --- Poppy mallow Callirhoe involucrata --- Purple poppy mallow Callirhoe triangulata --- Clustered loosestrife Callitriche heterophylla --- Water-starwort Callitriche verna --- Water-starwort Caltha palustris --- Marsh marigold Calylophus serrulatus --- Toothed evening primrose Calystegia sepium --- Morning glory, bindweed Calystegia spithamaea --- Low bindweed Camelina microcarpa --- Small-fruited false flax Camelina sativa --- False flax Campanula americana --- Tall bellflower Campanula aparinoides --- Marsh bellflower Campanula rapunculoides --- Campanula rotundifolia --- Harebell Campsis radicans --- Trumpet creeper Cannabis sativa --- Hemp, marijuana Capsella bursa-pastoris --- Shepherd's purse Caragana arborescens --- Siberian pea tree Cardamine bulbosa --- Spring cress Cardamine douglassii --- Purple cress Cardamine parviflora --- Small-flowered bitter cress Cardamine pensylvanica --- Bitter cress Cardaria chalapensis --- Cardaria draba --- Hoary cress Carduus acanthoides --- Plumeless thistle Carduus nutans --- Musk thistle Carpinus caroliniana --- Blue beech Carya cordiformis --- Bitternut hickory Carya illinoensis --- Pecan Carya laciniosa --- Kingnut hickory Carya ovata --- Shagbark hickory Carya tomentosa --- Mockernut hickory Cassia marilandica --- Wild senna Castanea dentata --- American chestnut Castilleja coccinea --- Indian paintbrush Castilleja sessiliflora --- Downy painted cup Catalpa bignoniodes --- Common catalpa Catalpa speciosa --- Cigar tree Caulophyllum thalictroides --- Blue cohosh Ceanothus americanus --- New Jersey tea Ceanothus herbaceus --- Redroot Celastrus orbiculatus --- Round-leaved bittersweet Celastrus scandens --- Bittersweet Celtis occidentalis --- Hackberry Centaurea calcitrapa --- Centaurea cyanus --- Bachelor's button Centaurea diffusa --- Centaurea jacea --- Centaurea maculosa --- Star thistle Centaurea moschata --- Centaurea nigra --- Black knapweed Centaurea repens --- Centaurea scabiosa --- Centaurea solstitialis --- Yellow star thistle Cephalanthus occidentalis --- Buttonbush Cerastium arvense --- Field chickweed Cerastium glomeratum --- Clammy chickweed Cerastium nutans --- Nodding chickweed Cerastium vulgatum --- Mouse-ear chickweed Ceratophyllum demersum --- Coontail, hortwort Cercis canadensis --- Redbud Chaenorrhinum minus --- Dwarf snapdragon Chaerophyllum procumbens --- Chervil Chamaecrista fasciculata --- Partridge pea Chelidonium majus --- Shallow-wort, celandine Chelone glabra --- White turtlehead Chelone obliqua --- Pink turtlehead Chenopodium album --- Lamb's quarters Chenopodium ambrosioides --- Mexican tea Chenopodium berlandieri --- Chenopodium botrys --- Jerusalem oak Chenopodium bushianum --- Chenopodium capitatum --- Strawberry blite Chenopodium desiccatum --- Narrow-leaved goosefoot Chenopodium foggii --- Chenopodium glaucum --- Chenopodium hybridum --- Maple-leaved goosefoot Chenopodium missouriensis --- Chenopodium murale --- Chenopodium polyspermum --- Many-seeded goosefoot Chenopodium rubrum --- Coast blite Chenopodium standleyanum --- Woodland goosefoot Chenopodium strictum --- Chenopodium urbicum --- Chimaphila umbellata --- Prince's pine Chorispora tenella --- Crossflower Chrysosplenium iowense --- Golden saxifrage Cichorium intybus --- Chicory Cicuta bulbifera --- Bulblet water hemlock Cicuta maculata --- Water hemlock Cimicifuga racemosa --- Bugbane Circaea alpina --- Enchanter's nightshade Circaea lutetiana --- Enchanter's nightshade Cirsium altissimum --- Tall thistle Cirsium arvense --- Canada thistle Cirsium discolor --- Field thistle Cirsium flodmanii --- Cirsium hillii --- Cirsium muticum --- Swamp thistle Cirsium undulatum --- Cirsium vulgare --- Bull thistle Claytonia virginica --- Spring beauty Clematis occidentalis --- Clematis pitcheri --- Leather flower Clematis virginiana --- Virgin's bower Cleome serrulata --- Stinking clover Collinsia verna --- Blue-eyed Mary Collomia linearis --- Comandra umbellata --- Bastard toadflax Conium maculatum --- Poison hemlock Conopholis americana --- Cancer-root, squaw-root Conringia orientalis --- Hare's-ear mustard Consolida ambigua --- Convolvulus arvensis --- European bindweed Conyza canadensis --- Horseweed Conyza ramosissima --- Low horseweed Coreopsis grandiflora --- Large-flowered coreopsis Coreopsis lanceolata --- Tickseed coreopsis Coreopsis palmata --- Tickseed Coreopsis tinctoria --- Golden coreopsis Coreopsis tripteris --- Tall tickseed Corispermum nitidum --- Cornus alternifolia --- Alternate-leaved dogwood Cornus amomum --- Silky dogwood Cornus canadensis --- Bunchberry, dwarf cornel Cornus drummondii --- Rough-leaved dogwood Cornus foemina --- Gray dogwood Cornus rugosa --- Speckled dogwood Cornus stolonifera --- Red-osier dogwood Coronilla varia --- Crown vetch Corydalis aurea --- Golden Corydalis Corydalis curvisiliqua --- Corydalis micrantha --- Slender fumewort Corydalis sempervirens --- Pink Corydalis Corylus americana --- Hazelnut Corylus cornuta --- Beaked hazel Crataegus calpodendron --- Crataegus chrysocarpa --- Crataegus coccinea --- Crataegus crus-galli --- Cockspur hawthorn Crataegus disperma --- Crataegus margaretta --- Crataegus mollis --- Crataegus pruinosa --- Crataegus punctata --- Crataegus succulenta --- Crepis runcinata --- Hawksbeard Crepis tectorum --- Crotolaria sagittalis --- Rattle box Croton capitatus --- Croton glandulosus --- Croton monanthogynus --- Prairie tea Croton texensis --- Texas Croton Crotonopsis elliptica --- Cryptotaenia canadensis --- Honewort Cucurbita foetidissima --- Missouri gourd Cuphea viscosissima --- Waxweed Cuscuta cephalanthii --- Dodder Cuscuta coryli --- Dodder Cuscuta cuspidata --- Dodder Cuscuta glomerata --- Dodder Cuscuta gronovii --- Dodder Cuscuta indecora --- Dodder Cuscuta pentagona --- Dodder Cuscuta polygonorum --- Dodder Cycloloma atriplicifolium --- Winged pigweed Cynanchum laeve --- Bluevine Cynoglossum officinale --- Hound's-tongue Dalea candida --- White prairie clover Dalea enneandra --- Dalea leporina --- Foxtail dalea Dalea purpurea --- Purple prairie clover Dalea villosa --- Silky prairie clover Dasistoma macrophylla --- Datura stramonium --- Jimsonweed Daucus carota --- Queen Anne's lace Decodon verticillatus --- Swamp loosestrife Delphinium carolinianum --- Delphinium tricorne --- Dwarf larkspur Delphinium virescens --- Prairie larkspur Dentaria laciniata --- Toothwort Descurainia pinnata --- Tansy mustard Descurainia sophia --- Desmanthus illinoensis --- Prairie mimosa Desmodium canadense --- Showy tick-trefoil Desmodium canescens --- Hoary tick-trefoil Desmodium cupSidatum --- Bracted tick-trefoil Desmodium glutinosum --- Pointed tick-trefoil Desmodium illinoense --- Illinois tick-trefoil Desmodium nudiflorum --- Bare-stemmed tick-trefoil Desmodium paniculatum --- Panicled tick-trefoil Desmodium sessilifolium --- Sessile-leaved tick-trefoil Dianthus armeria --- Deptford pink Dicentra canadensis --- Squirrel corn Dicentra cucullaria --- Dutchman's breeches Didiplis diandra --- Water purslane Diervilla Lonicera --- Bush honeysuckle Diodia teres --- Buttonweed Diospyros virginiana --- Persimmon Diplotaxis muralis --- Wall rocket Dipsacus laciniatus --- Cut-leaved teasel Dipsacus sylvestris --- Common teasel Dirca palustris --- Leatherwood Dodecatheon amethystinum --- Jeweled shooting star Dodecatheon meadia --- Shooting star Draba nemoRosa --- Draba reptans --- Whitlow grass Draba verna --- Vernal whitlow grass Dracocephalum parviflorum --- Dragonhead Drosera rotundifolia --- Sundew Dyssodia papposa --- Fetid marigold Echinacea angustifolia --- Purple coneflower Echinacea pallida --- Pale coneflower Echinacea purpurea --- Purple coneflower Echinocystis lobata --- Wild balsam apple Echinops sphaerocephalus --- Globe thistle Echium vulgare --- Blueweed Eclipta alba --- Yerbo-de-Tajo Elaeagnus angustifolia --- Russian olive Elaeagnus umbellata --- Autumn olive Elatine triandra --- Waterwort Ellisia nyctelea --- Waterpod, wild tomato Epilobium angustifolium --- Fireweed Epilobium ciliatum --- Willow herb Epilobium coloratum --- Cinnamon willowherb Epilobium leptophyllum --- Bog willowherb Epilobium strictum --- Willow herb Epilobium X wisconsinense --- Willow herb Erechtites hieracifolia --- Fireweed Erigeron annuus --- Annual fleabane Erigeron philadelphicus --- Fleabane Erigeron pulchellus --- Robin's plantain Erigeron strigosus --- Daisy fleabane Erodium cicutarium --- Pin clover, stork's bill Eruca sativa --- Garden rocket Erucastrum gallicum --- Dog mustard Eryngium yuccifolium --- Rattlesnake master Erysimum asperum --- Western wallflower Erysimum cheiranthoides --- Wormseed mustard Erysimum inconspicuum --- Erysimum repandum --- Euonymus alatus --- Winged wahoo, burning bush Euonymus atropurpureus --- Wahoo, burning bush Eupatorium altissimum --- Tall thoroughwort Eupatorium maculatum --- Spotted Joe-pye-weed Eupatorium perfoliatum --- Boneset Eupatorium purpureum --- Purple Joe-pye-weed Eupatorium rugosum --- White snakeroot Eupatorium serotinum --- Late boneset Eupatorium sessilifolium --- Upland boneset Euphorbia commutata --- Wood spurge Euphorbia corollata --- Flowering spurge Euphorbia cyathophora --- Wild poinsettia Euphorbia cyparissias --- Cypress spurge Euphorbia dentata --- Toothed spurge Euphorbia esula --- Leafy spurge Euphorbia falcata --- Falcate spurge Euphorbia geyeri --- Euphorbia glyptosperma --- Euphorbia hexagona --- Euphorbia maculata --- Carpet spurge Euphorbia marginata --- Snow-on-the-mountain Euphorbia missurica --- Euphorbia nutans --- Nodding spurge Euphorbia obtusata --- Blunt-leaved spurge Euphorbia peplus --- Petty spurge Euphorbia prostrata --- Euphorbia serpens --- Euphorbia serpyllifolia --- Euphorbia spathulata --- Euphorbia stictospora --- Euthamia graminifolia --- Fagopyrum esculentum --- Buckwheat Falcaria sioides --- Sickleweed Filipendula rubra --- Queen of the prairie Floerkea proserpinacoides --- False mermaid Fragaria vesca --- Woodland strawberry Fragaria virginiana --- Wild strawberry Fraxinus americana --- White ash Fraxinus nigra --- Black ash Fraxinus pennsylvanica --- Red ash Fraxinus quadrangulata --- Blue ash Froelichia floridana --- Cottonweed Froelichia gracilis --- Cottonweed Fumaria officinalis --- Fumitory Gaillardia pulchella --- Blanket flower Galeopsis tetrahit --- Hemp nettle Galinsoga parviflora --- Peruvian daisy Galinsoga quadriradiata --- Peruvian daisy Galium aparine --- Cleavers Galium asprellum --- Rough bedstraw Galium boreale --- Northern bedstraw Galium circaezans --- Galium concinnum --- Shining bedstraw Galium labradoricum --- Bog bedstraw Galium obtusum --- Wild madder Galium tinctorium --- Stiff bedstraw Galium trifidum --- Small bedstraw Galium triflorum --- Sweet-scented bedstraw Galium verum --- Yellow bedstraw Gaura biennis --- Gaura coccinea --- Gaura parviflora --- Gaylussacia baccata --- Black huckleberry Gentiana alba --- Pale gentian Gentiana andrewsii --- Bottle gentian Gentiana puberulenta --- Downy gentian Gentiana X billingtonii --- Soapwort gentian Gentianella quinquefolia --- Stiff gentian Gentianopsis crinita --- Fringed gentian Gentianopsis procera --- Small fringed gentian Geranium bicknellii --- Northern crane's bill Geranium carolinianum --- Cranesbill Geranium maculatum --- Wild Geranium Geum aleppicum --- Yellow avens Geum canadense --- White avens Geum laciniatum --- Rough avens Geum triflorum --- Prairies smoke Geum vernum --- Spring avens Glechoma hederacea --- Creeping Charlie Gleditsia triacanthos --- Honey locust Glycine max --- Soybean Glycyrrhiza lepidota --- Wild licorice Gnaphalium obtusifolium --- Everlasting Gnaphalium purpureum --- Early cudweed Gratiola neglecta --- Hedge hyssop Gratiola virginiana --- Grindelia squarRosa --- Gum plant Guitierrezia dracunculoides --- Broomweed Gymnocladus dioica --- Kentucky coffee tree Hackelia deflexa --- Stickseed Hackelia virginiana --- Stickseed Hamamelis virginiana --- Witch hazel Hedeoma hispidum --- Rough pennyroyal Hedeoma pulegioides --- American pennyroyal Hedyotis crassifolia --- Bluets Hedyotis nigricans --- Helenium amarum --- Bitterweed Helenium autumnale --- Sneezeweed Helianthemum bicknellii --- Rockrose Helianthemum canadense --- Helianthus annuus --- Common sunflower Helianthus decapetalus --- Pale sunflower Helianthus divaricatus --- Woodland sunflower Helianthus giganteus --- Tall sunflower Helianthus grosseserratus --- Saw-tooth sunflower Helianthus hirsutus --- Bristly sunflower Helianthus maximiliani --- Maximillian's sunflower Helianthus mollis --- Helianthus occidentalis --- Western sunflower Helianthus petiolaris --- Petioled sunflower Helianthus rigidus --- Prairie sunflower Helianthus strumosus --- Pale-leaved sunflower Helianthus tuberosus --- Jerusalem artichoke Heliopsis helianthoides --- Ox-eye Hepatica nobilis --- Liverleaf Hepatica nobilis --- Round-lobed liverleaf Heracleum lanatum --- Cow parsnip Hesperis matronalis --- Dame's rocket Heterotheca villosa --- Heuchera americana --- Alumroot Heuchera richardsonii --- Alumroot Hibiscus laevis --- Halberd-leaved rose mallow Hibiscus trionum --- Flower-of-an-hour Hieracium aurantiacum --- King-devil Hieracium canadense --- Hawkweed Hieracium longipilum --- Hawkweed Hieracium scabrum --- Rough hawkweed Hieracium umbellatum --- Hippuris vulgaris --- Mare's-tail Holosteum umbellatum --- Jagged chickweed Hudsonia tomentosa --- False heather Humulus japonicus --- Japanese hops Humulus lupulus --- Common hops Hybanthus concolor --- Green violet Hydrastis canadensis --- Golden seal Hydrophyllum appendiculatum --- Appendaged waterleaf Hydrophyllum virginianum --- Virginia waterleaf Hypericum boreale --- Northern St. John's wort Hypericum canadense --- Canadian St. John's wort Hypericum drummondii --- Nits and lice Hypericum gentianoides --- Pineweed Hypericum majus --- Large St. Johnswort Hypericum mutilum --- Weak St. John's wort Hypericum perforatum --- Common St. John's wort Hypericum prolificum --- Shrubby St. John's wort Hypericum punctatum --- Spotted St. John's wort Hypericum pyramidatum --- Giant St. John's wort Hypericum sphaerocarpum --- Round-fruited St. John's wort Iberis umbellata --- Candy tuft Ilex verticillata --- Winterberry Impatiens capensis --- Spotted touch-me-not Impatiens pallida --- Pale touch-me-not Inula Helenium --- Elecampane Iodanthus pinnatifidus --- Purple rocket Ipomoea coccinea --- Red morning glory Ipomoea hederacea --- Ipomoea lacunosa --- Ipomoea pandurata --- Wild sweet potato Ipomoea purpurea --- Annual morning glory Ipomopsis rubra --- Standing cypress Isopyrum biternatum --- False rue Anemone Iva annua --- Sumpweed Iva xanthifolia --- Marsh elder Jeffersonia diphylla --- Twinleaf Juglans cinerea --- Butternut Juglans nigra --- Black walnut Justicia americana --- Water willow Kochia scoparia --- Summer cypress Krigia biflora --- False dandelion Krigia dandelion --- Krigia virginica --- Dwarf dandelion Kummerowia stipulacea --- Korean clover Kummerowia striata --- Japanese clover Lactuca biennis --- Tall blue lettuce Lactuca canadensis --- Wild lettuce Lactuca floridana --- Blue lettuce Lactuca ludoviciana --- Prairie lettuce Lactuca saligna --- Lactuca serriola --- Prickly lettuce Lactuca tatarica --- Lamium amplexicaule --- Dead nettle, henbit Lamium purpureum --- Purple dead nettle Laportea canadensis --- Wood nettle Lappula echinata --- Beggar's-lice Lappula redowskii --- Lathyrus ochroleucus --- Wild pea, vetchling Lathyrus palustris --- Marsh vetchling Lathyrus tuberosus --- Lathyrus venosus --- Veiny pea Lechea intermedia --- Lechea racemulosa --- Lechea stricta --- Lechea tenuifolia --- Slender-leaved pinweed Lechea villosa --- Hairy pinweed Leontodon autumnalis --- Fall dandelion Leonurus cardiaca --- Motherwort Leonurus marrubiastrum --- Leonurus sibiricus --- Lepidium campestre --- Field cress Lepidium densiflorum --- Peppergrass Lepidium perfoliatum --- Perfoliate peppergrass Lepidium virginicum --- Poor-man's pepper Lespedeza capitata --- Round-headed bush clover Lespedeza cuneata --- Silky bush clover Lespedeza daurica --- Lespedeza leptostachya --- Prairie bush clover Lespedeza repens --- Creeping bush clover Lespedeza Violacea --- Violet bush clover Lespedeza virginica --- Slender bush clover Lesquerella ludoviciana --- Silvery bladder-pod Leucanthemum vulgare --- Ox-eye daisy Leucospora multifida --- Liatris aspera --- Blazing star Liatris cylindracea --- Blazing star Liatris ligulistylis --- Blazing star Liatris punctata --- Blazing star Liatris pycnostachya --- Prairie blazing star Liatris squarrosa --- Blazing star Linaria canadensis --- Toadflax Linaria macedonica --- Linaria vulgaris --- Butter & eggs Lindernia anagallidea --- False pimpernel Lindernia dubia --- Yellowseed false pimpernel Linnaea borealis --- Twinflower Linum medium --- Wild flax Linum perenne --- Flax Linum rigidum --- Stiff flax Linum sulcatum --- Wild flax Linum usitatissimum --- Cultivated flax Liriodendron tulipifera --- Tulip tree Lithospermum arvense --- Corn-gromwell Lithospermum canescens --- Hoary puccoon Lithospermum carolinense --- Hairy puccoon Lithospermum incisum --- Fringed puccoon Lithospermum latifolium --- American gromwell Lobelia cardinalis --- Cardinal flower Lobelia inflata --- Indian tobacco Lobelia kalmii --- Kalm's Lobelia Lobelia siphilitica --- Great Lobelia Lobelia spicata --- Spiked Lobelia Lobularia maritima --- Sweet alyssum Lomatium foeniculaceum --- Lomatium orientale --- Lonicera dioica --- Wild honeysuckle Lonicera morrowi --- Morrow's honeysuckle Lonicera prolifera --- Wild honeysuckle Lonicera sempervirens --- Trumpet honeysuckle Lonicera tartarica --- Tartarian honeysuckle Lotus corniculatus --- Bird's-foot trefoil Lotus purshianus --- Ludwigia alternifolia --- Seedbox Ludwigia palustris --- Water purslane Ludwigia peploides --- False loosestrife Ludwigia polycarpa --- False loosestrife Lupinus perennis --- Wild lupine Lycium halimifolium --- Matrimony vine Lycopersicon esculentum --- Tomato Lycopus americanus --- Water horehound Lycopus asper --- Lycopus uniflorus --- Northern bugleweed Lycopus virginicus --- Lygodesmia juncea --- Skeletonweed Lygodesmia rostrata --- Annual skeletonweed Lysimachia ciliata --- Fringed loosestrife Lysimachia clethroides --- Loosestrife Lysimachia hybrida --- Loosestrife Lysimachia lanceolata --- Loosestrife Lysimachia nummularia --- Moneywort Lysimachia punctata --- Loosestrife Lysimachia quadriflora --- Loosestrife Lysimachia terrestris --- Swamp loosestrife Lysimachia thyrsiflora --- Loosestrife Lythrum alatum --- Winged loosestrife Lythrum salicaria --- Purple loosestrife Machaeranthera spinulosa --- Maclura pomifera --- Osage orange Madia sativa --- Tarweed Malus ioensis --- Wild crab Malus sylvestris --- Apple Malva neglecta --- Cheeses Malva parviflora --- Little mallow Malva rotundifolia --- Round-leaved mallow Malva sylvestris --- High mallow Malva verticillata --- Mallow Malvastrum hispidum --- Marrubium vulgare --- Horehound Matricaria chamomilla --- Wild chamomile Matricaria maritima --- Matricaria matricarioides --- Pineapple weed Medicago falcata --- Yellow alfalfa Medicago lupulina --- Black medic Medicago sativa --- Alfalfa Megalodonta beckii --- Water marigold MeliLotus alba --- White sweet clover MeliLotus officinalis --- Yellow sweet clover Menispermum canadense --- Moonseed Mentha arvensis --- Wild mint Mentha spicata --- Spearmint Mentha X gentilis --- Mentha X piperita --- Peppermint Mentzelia decapetala --- Sand lily Menyanthes trifoliata --- Buckbean Mertensia paniculata --- Northern lungwort Mertensia virginica --- Bluebell Mimulus alatus --- Winged monkey flower Mimulus glabratus --- Yellow monkey flower Mimulus ringens --- Monkey flower Minuartia michauxii --- Rock sandwort Mirabilis albida --- Pale four-o'clock Mirabilis hirsuta --- Hairy four-o'clock Mirabilis nyctaginea --- Wild four-o'clock Mitchella repens --- Partridge berry Mitella diphylla --- Bishop's cap Mitella nuda --- Small bishop's cap Moehringia lateriflora --- Sandwort Mollugo verticillata --- Carpetweed Monarda didyma --- Oswego tea Monarda fistulosa --- Wild bergamot, horsemint Monarda punctata --- Spotted horsemint Monolepis nuttalliana --- Monotropa hypopithys --- Pine-sap Monotropa uniflora --- Indian pipe Montia chamissoi --- Morus alba --- Chinese mulberry Morus rubra --- Red mulberry Myosotis micrantha --- Myosotis verna --- Forget-me-not Myosoton aquaticum --- Giant chickweed Myosurus minimus --- Mousetail Myriophyllum exalbescens --- American milfoil Myriophyllum heterophyllum --- Water milfoil Myriophyllum pinnatum --- Rough water milfoil Myriophyllum spicatum --- Spiked water milfoil Myriophyllum verticillatum --- Milfoil Napaea dioica --- Glade mallow Nasturtium officinale --- Watercress Navarretia intertexta --- Nelumbo lutea --- American Lotus Nepeta cataria --- Catnip Neslia paniculata --- Ball mustard Nicandra physalodes --- Apple of Peru Nothocalais cuspidata --- Prairie dandelion Nuphar luteum --- Yellow water lily Nymphaea tuberosa --- White water lily Oenothera biennis --- Evening primrose Oenothera laciniata --- Ragged evening primrose Oenothera parviflora --- Evening primrose Oenothera perennis --- Small sundrops Oenothera pilosella --- Prairie sundrops Oenothera rhombipetala --- Sand primrose Oenothera speciosa --- Showy evening primrose Oenothera villosa --- Gray evening primrose Onopordum acanthium --- Scotch thistle Onosmodium molle --- False gromwell Opuntia fragilis --- Little prickly pear Opuntia humifusa --- Eastern prickly pear Opuntia macrorhiza --- Prickly pear Orbexilum onobrychis --- Orobanche fasciculata --- Clustered broomrape Orobanche ludoviciana --- Broomrape Orobanche uniflora --- One-flowered cancer-root Osmorhiza claytonii --- Sweet cicely Osmorhiza longistylis --- Anise root Ostrya virginiana --- Ironwood Oxalis dillenii --- Yellow wood sorrel Oxalis stricta --- Yellow wood sorrel Oxalis violacea --- Violet wood sorrel Oxypolis rigidior --- Cowbane Oxytropis lambertii --- Locoweed Panax quinquefolius --- Ginseng Parietaria pensylvanica --- Pellitory Parnassia glauca --- Grass of Parnassus Paronychia canadensis --- Tall forked chickweed Paronychia fastigiata --- Low forked chickweed Parthenium integrifolium --- Wild quinine Parthenocissus quinquefolia --- Virginia creeper Parthenocissus vitacea --- Woodbine Pastinaca sativa --- Wild parsnip Pedicularis canadensis --- Lousewort Pedicularis lanceolata --- Swamp lousewort Pediomelum argophyllum --- Silvery scurf-pea Pediomelum esculentum --- Prairie turnip Penstemon albidus --- Beardtongue Penstemon cobaea --- Beardtongue Penstemon digitalis --- Foxglove Penstemon Penstemon gracilis --- Beardtongue Penstemon grandiflorus --- Large-flowered beardtongue Penstemon pallidus --- Pale beardtongue Penstemon tubiflorus --- Beardtongue Penthorum sedoides --- Ditch stonecrop Perilla frutescens --- Beefsteak plant Petunia axillaris --- Petunia Philadelphus pubescens --- Mock orange Phlox bifida --- Cleft plox Phlox divaricata --- Sweet William Phlox maculata --- Phlox paniculata --- Garden Phlox Phlox pilosa --- Prairie Phlox Phlox subulata --- Moss-pink Phryma leptostachya --- Lopseed Phyla lanceolata --- Fogfruit Physalis heterophylla --- Ground cherry Physalis ixocarpa --- Tomatillo Physalis pubescens --- Annual ground cherry Physalis pubescens --- Strawberry tomato Physalis virginiana --- Ground cherry Physocarpus opulifolius --- Ninebark Physostegia parviflora --- Obedient plant Physostegia virginiana --- False dragonhead Phytolacca americana --- Pokeweed Picris echiodes --- Ox-tongue Pilea fontana --- Bog clearweed Pilea pumila --- Clearweed Plantago aristata --- Bracted plantain Plantago cordata --- Plantain Plantago indica --- Plantain Plantago lanceolata --- Buckhorn plantain Plantago major --- Plantain Plantago patagonica --- Plantain Plantago rugelii --- Common plantain Plantago virginica --- Plantain Platanus occidentalis --- Sycamore Podophyllum peltatum --- Mayapple Polanisia dodecandra --- Clammy weed Polanisia jamesii --- Polemonium reptans --- Jacob's ladder Polygala cruciata --- Milkwort Polygala incarnata --- Pink milkwort Polygala polygama --- Purple milkwort Polygala sanguinea --- Field milkwort Polygala senega --- Seneca snakeroot Polygala verticillata --- Whorled milkwort Polygonella articulata --- Polygonum achoreum --- Polygonum amphibium --- Waste smartweed Polygonum aviculare --- Knotweed Polygonum cespitosum --- Creeping smartweed Polygonum Convolvulus --- Black bindweed Polygonum cuspidatum --- Japanese bamboo Polygonum douglasii --- Polygonum erectum --- Polygonum hydropiper --- Polygonum hydropiperoides --- Polygonum lapathifolium --- Polygonum orientale --- Polygonum pensylvanicum --- Polygonum Persicaria --- Lady's thumb Polygonum punctatum --- Water smartweed Polygonum ramosissimum --- Bushy knotweed Polygonum sagittatum --- Tearthumb Polygonum scandens --- Climbing false buckwheat Polygonum tenue --- Polygonum virginianum --- Jumpseed Polymnia canadensis --- Leafcup Polytaenia nuttallii --- Prairie parsley Populus alba --- Silver poplar Populus balsamifera --- Balsam poplar Populus deltoides --- Cottonwood Populus grandidentata --- Big-tooth aspen Populus nigra --- Lombardy poplar Populus tremuloides --- Quaking aspen Populus X rouleauiana --- Portulaca grandiflora --- Moss-rose Portulaca oleracea --- Common purslane Potentilla anserina --- Silverweed Potentilla argentea --- Potentilla arguta --- Potentilla fruticosa --- Shrubby cinquefoil Potentilla intermedia --- Potentilla norvegica --- Norwegian cinquefoil Potentilla palustris --- Marsh cinquefoil Potentilla paradoxa --- Bushy cinquefoil Potentilla pensylvanica --- Potentilla recta --- Sulphur cinquefoil Potentilla rivalis --- Brook cinquefoil Potentilla simplex --- Common cinquefoil Potentilla tridentata --- Three-toothed cinquefoil Prenanthes alba --- Rattlesnake-root, white lettuce Prenanthes aspera --- Rough white lettuce Prenanthes racemosa --- Glaucous white lettuce Primula mistassinica --- Bird's-eye primrose Prionopis ciliata --- Proboscidea louisianica --- Unicorn plant Proserpinaca palustris --- Mermaid weed Prunella vulgaris --- Self heal Prunus americana --- Wild plum Prunus besseyi --- Dwarf cherry Prunus hortulana --- Hortulan plum Prunus mexicana --- Big-tree plum Prunus nigra --- Canada plum Prunus pensylvanica --- Pin cherry Prunus persica --- Peach Prunus pumila --- Sand cherry Prunus serotina --- Wild black cherry Prunus virginiana --- Choke cherry Psoralidium batesii --- Scurfy pea Psoralidium lanceolatum --- Ptelea trifoliata --- Wafer ash Pulsatilla patens --- Pasque flower Pycnanthemum pilosum --- Hairy mountain mint Pycnanthemum tenuifolium --- Slender mountain mint Pycnanthemum virginianum --- Common mountain mint Pyrola asarifolia --- Pink Pyrola Pyrola elliptica --- Shinleaf Pyrola secunda --- One-sided Pyrola Pyrrhopappus carolinianus --- False dandelion Pyrus communis --- Pear Quercus alba --- White oak Quercus bicolor --- Swamp white oak Quercus borealis --- Northern red oak Quercus ellipsoidalis --- Hill's oak Quercus imbricaria --- Shingle oak Quercus macrocarpa --- Bur oak Quercus marilandica --- Blackjack oak Quercus muehlenbergii --- Chinquapin oak Quercus palustris --- Pin oak Quercus prinoides --- Dwarf chinquapin oak. Quercus stellata --- Post oak Quercus velutina --- Black oak Quercus X bebbiana --- Quercus X bushii --- Quercus X deamii --- Quercus X exacta --- Quercus X fernowii --- Quercus X hawkinsii --- Quercus X leana --- Quercus X paleolithicola --- Quercus x schuettei --- Ranunculus abortivus --- Small-flowered crowfoot Ranunculus acris --- Ranunculus aquatilis --- Ranunculus circinatus --- Ranunculus cymbalaria --- Seaside crowfoot Ranunculus fascicularis --- Early buttercup Ranunculus flabellaris --- Yellow water crowfoot Ranunculus gmelinii --- Ranunculus longirostris --- White water crowfoot Ranunculus pensylvanicus --- Bristly crowfoot Ranunculus recurvatus --- Hooked buttercup Ranunculus repens --- Creeping buttercup Ranunculus rhomboideus --- Prairie buttercup Ranunculus sceleratus --- Cursed crowfoot Ranunculus septentrionalis --- Swamp buttercup Ranunculus testiculatus --- Raphanus raphanistrum --- Wild radish Raphanus sativus --- Radish Ratibida columnifera --- Long-headed coneflower Ratibida pinnata --- Gray-headed coneflower Reseda luteola --- Dyer's rocket Rhamnus alnifolia --- Alder buckthorn Rhamnus cathartica --- Common buckthorn Rhamnus davurica --- Rhamnus frangula --- Glossy buckthorn Rhamnus lanceolata --- Lance-leaved buckthorn Rhexia virginica --- Meadow beauty Rhus aromatica --- Fragrant sumac Rhus copallina --- Dwarf sumac Rhus glabra --- Smooth sumac Rhus typhina --- Staghorn sumac Ribes americanum --- Wild black currant Ribes cynosbati --- Prickly gooseberry Ribes hirtellum --- Ribes hudsonianum --- Northern currant Ribes missouriense --- Wild gooseberry Ribes odoratum --- Buffalo currant Ribes sativum --- Garden currant Robinia pseudoacacia --- Black locust Rorippa austriaca --- Austrian field cress Rorippa palustris --- Marsh cress Rorippa prostrata --- Rorippa sessiliflora --- Rorippa sinuata --- Rorippa sylvestris --- Creeping yellow cress Rosa acicularis --- Rosa arkansana --- Sunshine rose Rosa blanda --- Meadow rose Rosa carolina --- Rosa eglanteria --- Sweetbriar rose Rosa multiflora --- Multiflora rose Rosa palustris --- Swamp rose Rosa setigera --- Prairie rose Rosa woodsii --- Rotala ramosior --- Toothcup Rubus allegheniensis --- Blackberry Rubus flagellaris --- Dewberry Rubus hispidus --- Dewberry Rubus idaeus --- Cultivated red raspberry Rubus occidentalis --- Black raspberry Rubus pubescens --- Rubus strigosus --- Wild red raspberry Rudbeckia hirta --- Black-eyed Susan Rudbeckia laciniata --- Tall coneflower Rudbeckia subtomentosa --- Fragrant coneflower Rudbeckia triloba --- Brown-eyed Susan Ruellia humilis --- Wild Petunia Ruellia strepens --- Smooth Ruellia Rumex acetosella --- Red sorrel Rumex altissimus --- Rumex crispus --- Curly dock Rumex maritimus --- Rumex mexicanus --- Rumex obtusifolius --- Bitter dock Rumex occidentalis --- Rumex orbiculatus --- Rumex patientia --- Rumex venosus --- Rumex verticillatus --- Sabatia campestris --- Prairie rose gentian Salix alba --- White willow Salix amygdaloides --- Peach-leaved willow Salix babylonica --- Weeping willow Salix bebbiana --- Beaked willow Salix candida --- Sage willow Salix discolor --- Pussy willow Salix exigua --- Sandbar willow Salix fragilis --- Crack willow Salix humilis --- Prairie willow Salix lucida --- Shining willow Salix nigra --- Black willow Salix pedicellaris --- Bog willow Salix pentandra --- Bay-leaved willow Salix petiolaris --- Salix purpurea --- Purple willow Salix rigida --- Salix sericea --- Silky willow Salix X subsericea --- Salsola collina --- Salsola iberica --- Russian thistle Salvia nemorosa --- Salvia pitcheri --- Pitcher's sage Salvia reflexa --- Rocky mountain sage Salvia sylvestris --- Sambucus canadensis --- Elderberry Sambucus racemosa --- Red-berried elder Sanguinaria canadensis --- Bloodroot Sanguisorba annua --- Sanicula canadensis --- Black snakeroot Sanicula gregaria --- Common snakeroot Sanicula marilandica --- Black snakeroot Sanicula trifoliata --- Large-fruited black snakeroot Saponaria officinalis --- Bouncing Bet Sassafras albidum --- Sassafras Satureja vulgaris --- Basil Saxifraga forbesii --- Forbes' saxifrage Saxifraga pensylvanica --- Swamp saxifrage Schrankia nuttallii --- Sensitive brier Scrophularia lanceolata --- Scrophularia marilandica --- Scutellaria galericulata --- Skullcap Scutellaria incana --- Downy skullcap Scutellaria lateriflora --- Mad-dog skullcap Scutellaria leonardii --- Skullcap Scutellaria nervosa --- Skullcap Scutellaria ovata --- Skullcap Scutellaria parvula --- Skullcap Sedum acre --- Mossy stonecrop Sedum ternatum --- Wild stonecrop Senecio aureus --- Golden ragwort Senecio congestus --- Marsh fleabane Senecio glabellus --- Butterweed Senecio integerrimus --- Senecio pauperculus --- Prairie ragwort Senecio plattensis --- Prairie ragwort Senecio pseudaureus --- Senecio vulgaris --- Common groundsel Shepherdia argentea --- Buffalo berry Sibara virginica --- Sicyos angulatus --- Bur-cucumber Sida spinosa --- Prickly mallow Silene antirrhina --- Sleepy catchfly Silene cserei --- Silene dichotoma --- Catchfly Silene nivea --- Silene noctiflora --- Night-flowering catchfly Silene pratensis --- White campion Silene stellata --- Starry campion Silene virginica --- Firepink Silene vulgaris --- Bladder campion Silphium integrifolium --- Rosinweed Silphium laciniatum --- Compass plant Silphium perfoliatum --- Cup plant Silphium terebinthinaceum --- Prairie dock Sinapis alba --- White mustard Sinapis arvensis --- Charlock Sisymbrium altissimum --- Tumble mustard Sisymbrium loeselii --- Sium suave --- Water parsnip Solanum americanum --- Black nightshade Solanum carolinense --- Horse nettle Solanum dulcamara --- European bittersweet Solanum interius --- Plains black nightshade Solanum rostratum --- Buffalo bur Solidago canadensis --- Tall goldenrod Solidago flexicaulis --- Zig-zag goldenrod Solidago gigantea --- Smooth goldenrod Solidago hispida --- Solidago missouriensis --- Missouri goldenrod Solidago nemoralis --- Field goldenrod Solidago patula --- Solidago ptarmicoides --- Solidago riddellii --- Riddell's goldenrod Solidago rigida --- Stiff goldenrod Solidago sciaphila --- Cliff goldenrod Solidago speciosa --- Showy goldenrod Solidago uliginoisa --- Swamp goldenrod Solidago ulmifolia --- Elm-leaved goldenrod Sonchus arvensis --- Perennial sow thistle Sonchus asper --- Spiny-leaved sow thistle Sonchus oleraceus --- Common sow thistle Sorbaria sorbifolia --- False Spirea Sorbus aucuparia --- Mountain ash Spermolepis inermis --- SphaerAlcea coccinea --- Scarlet mallow Spirea alba --- Meadowsweet Stachys aspera --- Hedge nettle Stachys palustris --- Woundwort Stachys tenuifolia --- Hedge nettle Staphylea trifolia --- Bladdernut Stellaria graminea --- Common stitchwort Stellaria longifolia --- Stitchwort Stellaria media --- Common chickweed Strophostyles helvula --- Strophostyles leiosperma --- Stylisma pickeringii --- Sullivantia sullivantii --- Symphoricarpos albus --- Snowberry Symphoricarpos occidentalis --- Wolfberry Symphoricarpos orbiculatus --- Coralberry Syringa vulgaris --- Lilac Sisymbrium officinale --- Taenidia integerrima --- Yellow pimpernel TaLinum parviflorum --- Prairie fameflower TaLinum rugospermum --- Fameflower Tanacetum vulgare --- Tansy Taraxacum laevigatum --- Red-seeded dandelion Taraxacum officinale --- Common dandelion Tephrosia virginiana --- Goat's-rue Teucrium canadense --- American germander Teucrium canadense --- Wood sage Thalictrum dasycarpum --- Purple meadow-rue Thalictrum dioicum --- Early meadow-rue Thalictrum revolutum --- Waxy meadow-rue Thalictrum thalictroides --- Rue Anemone Thaspium barbinode --- Meadow parsnip Thlaspi arvense --- Penny cress Thymelaea passerina --- Tilia americana --- Basswood Tilia heterophylla --- White basswood Tomanthera auriculata --- Torilis arvensis --- Hedge parsley Toxicodendron radicans --- Poison ivy Toxicodendron rydbergii --- Rydberg's poison ivy Tragopogon dubius --- Goat's-beard Tragopogon porrifolius --- Salsify, oyster plant Tragopogon pratensis --- Goat's-beard Triadenum fraseri --- Marsh St. John's wort Tribulis terrestris --- Puncture-weed, caltrop Trichostema brachiatum --- False pennyroyal Trichostema dichotomum --- Blue curls Trifolium arvense --- Rabbit-foot clover Trifolium aureum --- Hop-clover Trifolium campestre --- Low hop-clover Trifolium dubium --- Little hop-clover Trifolium hybridum --- Alsike clover Trifolium incarnatum --- Crimson clover Trifolium pratense --- Red clover Trifolium reflexum --- Buffalo clover Trifolium repens --- White clover Trifolium resupinatum --- Persian clover Triodanis leptocarpa --- Triodanis perfoliata --- Venus' looking-glass Triosteum aurantiacum --- Horse gentian Triosteum perfoliatum --- Horse gentian Ulmus americana --- American elm Ulmus pumila --- Siberian elm Ulmus rubra --- Red elm Ulmus thomasii --- Rock elm Urtica dioica --- Stinging nettle Urtica urens --- Utricularia gibba --- Humped bladderwort Utricularia intermedia --- Flat-leaved bladderwort Utricularia minor --- Small bladderwort Utricularia vulgaris --- Common bladderwort Vaccaria pyramidata --- Cowherb, cow cockle Vaccinium angustifolium --- Low sweet blueberry Vaccinium myrtilloides --- Velvet-leaf blueberry Valeriana edulis --- Valerian Valeriana officinalis --- Garden heliotrope Verbascum blattaria --- Moth mullein Verbascum lychnitis --- White mullein Verbascum phlomoides --- Verbascum thapsus --- Common mullein Verbena bracteata --- Creeping vervain Verbena canadensis --- Verbena hastata --- Blue vervain Verbena simplex --- Verbena stricta --- Hoary vervain Verbena urticifolia --- White vervain Verbena X blanchardi --- Verbena X deamii --- Verbena X engelmannii --- Verbena X moechina --- Verbena X rydbergii --- Verbesina alternifolia --- Wingstem Verbesina encelioides --- Vernonia baldwinii --- Baldwin's ironweed Vernonia fasciculata --- Ironweed Vernonia gigantea --- Tall Ironweed Vernonia missurica --- Missouri ironweed Veronica agretis --- Field speedwell Veronica americana --- American brookline Veronica anagallis-aquatica --- Water speedwell Veronica arvensis --- Corn speedwell Veronica catenata --- Water speedwell Veronica officinalis --- Common speedwell Veronica peregrina --- Veronica persica --- Veronica scutellata --- Marsh speedwell Veronica serpyllifolia --- Veronicastrum virginicum --- Culver's root Viburnum dentatum --- Southern arrowwood Viburnum lentago --- Nannyberry Viburnum molle --- Arrowwood Viburnum opulus --- Guelder-rose Viburnum prunifolium --- Black haw Viburnum rafinesquianum --- Downy arrowwood Viburnum trilobum --- Highbush cranberry Vicia americana --- Vetch Vicia cracca --- Cow vetch Vicia sativa --- Common vetch Vicia sativa --- Narrow-leaved vetch Vicia villosa --- Vinca minor --- Common periwinkle Viola adunca --- Viola canadensis --- Viola incognita --- Viola lanceolata --- Lance-leaved violet Viola macloskeyi --- Viola missouriensis --- Viola missouriensis X V. sororia --- Viola nephrophylla --- Bog violet Viola nephrophylla X V. sororia --- Viola pedata --- Bird's-foot violet Viola pedatifida --- Prairie violet Viola pratincola --- Common blue violet Viola pratincola X V. pedatifida --- Viola pubescens --- Downy yellow violet Viola rafinesquii --- Wild pansy Viola renifolia --- Kidney-leaved violet Viola sagittata --- Arrow-leaved violet Viola sagittata X V. pedatifida --- Viola sororia --- Hairy blue violet Viola striata --- Viola tricolor --- Garden pansy Viola viarum --- Plains violet Viola X bernardii --- Viola X napae --- Viola X sublanceolata --- Vitis aestivalis --- Summer grape Vitis cinerea --- Winter grape, fox grape Vitis riparia --- Riverbank grape Vitis vulpina --- Frost grape Wisteria frutescens --- Xanthium spinosum --- Spiny cocklebur Xanthium strumarium --- Cocklebur Zanthoxylum americanum --- Prickly ash Zizia aptera --- Heart-leaved meadow parsnip Zizia aptera X aurea --- Zizia aurea --- Golden alexanders