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Number of results: 682
| Scientific Name | Common Name(s) |
|---|---|
| Abutilon threophrasti | Velvet Leaf, Indian Mallow, Pie-marker |
| Acalypha rhomboidea | Three-seeded Mercury, Rhombic Copperleaf |
| Achillea millefolium | Common Yarrow |
| Actaea pachypoda | White Baneberry, Doll's-eyes |
| Actaea rubra | Red Baneberry |
| Adoxa moschatellina | Moschatel, Musk-root |
| Agalinis purpurea | Purple False Foxglove, Purple Gerardia, Purple Agalinis |
| Agalinis tenuifolia | Slender-leaved False Foxglove, Slender Gerardia, Slender Agalinis, Common False Foxglove |
| Agastache foeniculum | Blue Giant Hyssop, Lavender Hyssop, Anise Hyssop |
| Agastache nepetoides | Yellow Giant Hyssop, Catnip Giant Hyssop |
| Agastache scrophulariifolia | Purple Giant Hyssop |
| Ageratina altissima | White Snakeroot |
| Agoseris glauca | False Dandelion, Pale Agoseris, Pale Goat Chicory, Prairie Dandelion |
| Agrimonia gryposepala | Tall Hairy Agrimony, Common Agrimony |
| Alisma triviale | Northern Water Plantain, Large-flowered Water Plantain |
| Alliaria petiolata | Garlic Mustard |
| Allium stellatum | Prairie Onion, Autumn Onion, Pink Wild Onion, Prairie Wild Onion |
| Allium textile | White Wild Onion, Textile Onion |
| Allium tricoccum | Wild Leek, Ramps, Three-seeded Leek |
| Allium tuberosum | Chinese Chives, Garlic Chives |
| Ambrosia artemisiifolia | Common Ragweed, Annual Ragweed |
| Ambrosia psilostachya | Western Ragweed, Cuman Ragweed |
| Ambrosia trifida | Giant Ragweed, Great Ragweed, Horseweed |
| Amerorchis rotundifolia | Small Round-leaved Orchid, Round-leaved Orchis |
| Amorpha canescens | Lead Plant, Shoestrings |
| Amorpha fruticosa | False Indigo, Desert False Indigo, Bastard Indigo |
| Amorpha nana | Fragrant False Indigo, Dwarf False Indogo, Dwarf Lead Plant, Smooth Lead Plant, Fragrant Indigo-bush |
| Amphicarpaea bracteata | American Hog Peanut |
| Anaphalis margaritacea | Pearly Everlasting, Large-flowered Everlasting |
| Andromeda polifolia | Bog Rosemary |
| Androsace occidentalis | Western Rock Jasmine, Western androsace |
| Anemone acutiloba | Sharp-lobed Hepatica, Liverwort, Liverleaf |
| Anemone americana | Round-lobed Hepatica, Liverleaf, Liverwort |
| Anemone canadensis | Canada Anemone |
| Anemone caroliniana | Carolina anemone, Carolina Thimbleweed |
| Anemone cylindrica | Thimbleweed, Long-fruited Thimbleweed, Long-headed Anemone, Candle Anemone, Cottenweed |
| Anemone patens | American Pasqueflower, Eastern Pasque Flower, Prairie Crocus, Cutleaf Anemone |
| Anemone quinquefolia | Wood Anemone, Nightcaps |
| Anemone virginiana | Tall Thimbleweed, Virginia Anemone |
| Angelica atropurpurea | Angelica, Great Angelica, Purple-stemmed Angelica |
| Antennaria neglecta | Field Pussytoes |
| Antennaria plantaginifolia | Plantain-leaved Pussytoes, Woman's Tobacco, Plain-leaf Pussytoes |
| Apios americana | Groundnut, American Potato-bean, Indian Potato |
| Aplectrum hyemale | Putty-root, Adam and Eve |
| Apocynum androsaemifolium | Spreading Dogbane |
| Apocynum cannabinum | Indian Hemp, Prairie Dogbane, Hemp Dogbane |
| Apocynum sibiricum | Clasping Dogbane, Prairie Dogbane |
| Aquilegia canadensis | Red Columbine, Wild Columbine |
| Arabidopsis lyrata | Lyre-leaved Rock Cress, Lyrate Rockcress, Sand Cress, Harp-leaf Rockcress |
| Arabidopsis thaliana | Mouse-ear Cress, Thale Cress |
| Arabis pycnocarpa | Hairy Rock Cress, Cream-flower Rock-cress |
| Aralia hispida | Bristly Sarsaparilla |
| Aralia nudicaulis | Wild Sarsaparilla |
| Aralia racemosa | Spikenard, American Spikenard |
| Arceuthobium pusillum | Eastern Dwarf Mistletoe |
| Arctium minus | Common Burdock, Lesser Burdock |
| Arctostaphylos uva-ursi | Bearberry, Kinnikinnick |
| Arethusa bulbosa | Dragon's Mouth, Swamp Pink |
| Arisaema triphyllum | Jack-in-the-Pulpit, Indian Turnip |
| Armoracia rusticana | Horseradish |
| Artemisia absinthium | Absinthium, Absinth Wormwood |
| Artemisia biennis | Biennial Wormwood |
| Artemisia campestris | Field Sagewort, Tall Wormwood |
| Artemisia dracunculus | Tarragon |
| Artemisia frigida | Prairie Sagewort, Sage Wormwood, Fringed Sagewort |
| Artemisia ludoviciana | White Sage, White Sagebrush, Prairie Sage, Western Mugwort |
| Artemisia serrata | Saw-tooth Wormwood, Leafy Mugwort, Toothed Sagewort, Saw-leaf Mugwort |
| Artemisia vulgaris | Common Mugwort, Common Wormwood |
| Asarum canadense | Canadian Wild Ginger |
| Asclepias amplexicaulis | Clasping Milkweed, Blunt-leaved Milkweed, Sand Milkweed |
| Asclepias exaltata | Poke Milkweed, Tall Milkweed |
| Asclepias hirtella | Prairie Milkweed, Tall Green Milkweed |
| Asclepias incarnata | Swamp Milkweed, Swamp Silkweed |
| Asclepias lanuginosa | Woolly Milkweed, Side-cluster Milkweed |
| Asclepias ovalifolia | Oval-leaf Milkweed, Dwarf Milkweed |
| Asclepias purpurascens | Purple Milkweed |
| Asclepias speciosa | Showy Milkweed |
| Asclepias stenophylla | Narrow-leaved Milkweed, Slimleaf Milkweed |
| Asclepias sullivantii | Sullivant's Milkweed, Smooth Milkweed, Prairie Milkweed |
| Asclepias syriaca | Common Milkweed, Silkweed, Milkplant |
| Asclepias tuberosa | Butterfly-weed, Butterfly Milkweed |
| Asclepias verticillata | Whorled Milkweed |
| Asclepias viridiflora | Green Milkweed, Green Comet Milkweed |
| Asparagus officinalis | Garden Asparagus, Common Asparagus |
| Astragalus adsurgens | Prairie Milkvetch, Standing Milk-vetch, Lavender Milk-vetch |
| Astragalus agrestis | Field Milkvetch, Purple Milk-vetch |
| Astragalus alpinus | Alpine Milkvetch |
| Astragalus canadensis | Canada Milkvetch, Canadian Milk-vetch |
| Astragalus cicer | Chickpea Milk-vetch, Cicer Milkvetch |
| Astragalus crassicarpus | Ground Plum, Prairie Plum, Groundplum Milkvetch, Buffalo Bean |
| Astragalus flexuosus | Slender Milkvetch, Flexile Milkvetch |
| Astragalus lotiflorus | Lotus Milkvetch, Low Milk-vetch |
| Astragalus missouriensis | Missouri Milkvetch |
| Baptisia bracteata | Plains Wild Indigo, Cream Wild Indigo, Cream False Indigo, Long-bract Wild Indigo |
| Baptisia lactea | White Wild Indigo, White False Indigo, Large-leaf Wild Indigo |
| Barbarea vulgaris | Garden Yellow Rocket, Winter Cress, Yellow-rocket |
| Bartonia virginica | Yellow Bartonia, Virginia Bartonia, Yellow Screw-stem |
| Berteroa incana | Hoary Alyssum, Hoary False Madwort |
| Berula erecta | Cut-leaf Water Parsnip, Stream Parsnip |
| Besseya bullii | Kittentails, Bull's Coraldrops |
| Bidens beckii | Water Marigold, Beck's Water Marigold, Beck's Marsh Marigold |
| Bidens cernua | Nodding Bur-Marigold, Nodding Beggarticks |
| Bidens connata | Purple-stem Beggarticks, Swamp Beggarticks |
| Bidens discoidea | Discoid Beggarticks, Swamp Beggarticks |
| Bidens frondosa | Devil's Beggarticks, Leafy Beggarticks, Devil's Pitchfork |
| Bidens trichosperma | Crowned Beggarticks, Northern Tickseed-sunflower, Tall Tickseed-sunflower, Tall Swamp Marigold |
| Bidens tripartita | Three-lobed Beggarticks, Straw-stem Beggarticks, Leafy-bracted Beggarticks |
| Bidens vulgata | Big Devil's Beggarticks, Tall Beggarticks, Common Beggarticks |
| Bistorta vivipara | Alpine Bistort |
| Boechera canadensis | Sickle-pod, Canadian Rockcress |
| Boechera dentata | Toothed Rock Cress, Short's Rock Cress, Stellate Rock Cress |
| Boechera grahamii | Spreading-pod Rock Cress, Purple Rockcress |
| Boechera laevigata | Smooth Rock Cress |
| Boehmeria cylindrica | Small-spike False Nettle |
| Boltonia asteroides | False Aster, White Doll's Eyes, White Doll's Daisy |
| Brasenia schreberi | Water-shield |
| Brassica nigra | Black Mustard |
| Brassica rapa | Field Mustard, Turnip Rape, Wild Mustard, Bird's-rape |
| Butomus umbellatus | Flowering Rush |
| Calla palustris | Wild Calla, Water Arum |
| Calopogon tuberosus | Tuberous Grass-pink |
| Caltha palustris | Marsh Marigold, Cowslips |
| Calylophus serrulatus | Yellow Sundrops, Toothed Evening Primrose, Plains Yellow Primrose |
| Calypso bulbosa var. americana | Fairy Slipper, Calypso Orchid |
| Calystegia sepium | Hedge Bindweed, Hedge False Bindweed |
| Calystegia spithamaea | Low False Bindweed, Upright Bindweed, Erect Bindweed |
| Campanula americanum | American Bellflower, Tall Bellflower |
| Campanula aparinoides | Marsh Bellflower, Bedstraw Bellflower |
| Campanula cervicaria | Bristly Bellflower, Bristly Bluebells |
| Campanula rapunculoides | Creeping Bellflower, Rampion Bellflower, European Bellflower |
| Campanula rotundifolia | Harebell, Bluebell Bellflower, Bluebells of Scotland |
| Cannabis sativa | Hemp, Ditchweed |
| Capsella bursa-pastoris | Shepherd's Purse |
| Cardamine bulbosa | Spring Cress, Bulbous Bittercress |
| Cardamine concatenata | Cutleaf Toothwort |
| Cardamine impatiens | Narrow-leaf Bittercress, Bushy Rockcress |
| Cardamine parviflora | Small-flowered Bittercress, Sand Bittercress, Dry-land Bittercress |
| Cardamine pensylvanica | Pennsylvania Bittercress |
| Carduus acanthoides | Plumeless Thistle, Spiny Plumeless Thistle |
| Carduus nutans | Nodding Thistle, Nodding Plumeless Thistle, Musk Thistle |
| Carum carvi | Caraway |
| Castilleja coccinea | Indian Paintbrush, Scarlet Painted-cup |
| Castilleja sessiliflora | Downy Painted-cup, Downy Paintbrush, Yellow Painted-cup |
| Caulophyllum thalictroides | Blue Cohosh, Pappoose-root, Squaw-root |
| Ceanothus americanus | New Jersey Tea, Redroot, Wild Snowball |
| Centaurea stoebe | Spotted Knapweed |
| Cerastium arvense | Field Chickweed |
| Cerastium fontanum | Mouse-ear Chickweed, Big Chickweed |
| Chaenorrhinum minus | Dwarf Snapdragon |
| Chamaechrista fasciculata | Partridge Pea, Showy Partridge Pea |
| Chamaedaphne calyculata | Leather-leaf |
| Chelidonium majus | Celandine, Greater Celandine |
| Chelone glabra | White Turtlehead |
| Chimaphila umbellata | Pipsissewa, Prince's-pine |
| Chrysosplenium americanum | American Golden Saxifrage, Water Mat, Water Carpet |
| Cichorium intybus | Chicory, Blue Sailors, Wild Succory, Blue Dandelion |
| Cicuta bulbifera | Bulblet-bearing Water Hemlock |
| Cicuta maculata | Water Hemlock, Spotted Water Hemlock, Spotted Cowbane |
| Circaea lutetiana | Enchanter's Nightshade, Broadleaf Enchanter's Nightshade |
| Cirsium altissimum | Tall Thistle, Roadside Thistle |
| Cirsium arvense | Canada Thistle, Field Thistle |
| Cirsium discolor | Field Thistle, Pasture Thistle |
| Cirsium flodmanii | Flodman's Thistle, Hollow-root Thistle, Prairie Thistle |
| Cirsium muticum | Swamp Thistle |
| Cirsium pumilum var. hillii | Hill's Thistle, Hollow-root Thistle |
| Cirsium vulgare | Bull Thistle |
| Claytonia caroliniana | Carolina Spring Beauty, Northern Spring Beauty |
| Claytonia virginica | Virginia Spring Beauty |
| Clematis virginiana | Virgin's Bower, Devil's Darning Needles |
| Clintonia borealis | Bluebead, Yellow Bluebead Lily, Yellow Clintonia, Corn Lily |
| Coeloglossum viride | Long-bract Frog Orchid, Long-bracted Orchid |
| Comandra umbellata | Bastard Toadflax |
| Commelina communis | Asiatic Dayflower |
| Conium maculatum | Poison Hemlock |
| Convallaria majalis | European Lily-of-the-valley |
| Convolvulus arvensis | Field Bindweed |
| Conyza canadensis | Canadian Horseweed, Canada Fleabane |
| Coptis trifolia | Three-leaf Goldthread |
| Corallorhiza maculata | Spotted Coralroot, Summer Coralroot |
| Corallorhiza odontorhiza | Autumn Coralroot, Late Coralroot |
| Corallorhiza striata | Striped Coralroot, Hooded Coralroot |
| Corallorhiza trifida | Early Coralroot, Spring Coralroot, Yellow Coralroot, Northern Coralroot |
| Coreopsis palmata | Prairie Coreopsis, Stiff Tickseed, Finger Coreopsis |
| Cornus canadensis | Bunchberry, Bunchberry Dogwood, Creeping Dogwood |
| Coronilla varia | Crown Vetch, Purple Crownvetch |
| Corydalis aurea | Golden Corydalis, Scrambled Eggs |
| Corydalis sempervirens | Pale Corydalis, Rock Harlequin, Pink Corydalis |
| Crepis tectorum | Narrow-leaf Hawksbeard |
| Crotalaria sagittalis | Rattlebox, Arrowhead Rattle-box |
| Cryptotaenia canadensis | Canadian Honewort |
| Cyclachaena xanthiifolia | Giant Sumpweed, Marsh Elder, False Ragweed |
| Cycloloma atriplicifolium | Winged Pigweed |
| Cynoglossum officinale | Gypsy Flower, Hound's-tongue |
| Cypripedium acaule | Stemless Lady's-slipper, Pink Moccasin-flower, Small Pink Lady's-slipper |
| Cypripedium arietinum | Ram's-head Lady's-slipper, Ram's-head Moccasin Flower |
| Cypripedium candidum | Small White Lady's-slipper, White Moccasin-flower |
| Cypripedium parviflorum var. makasin | Small Yellow Lady's-slipper, Lesser Yellow Lady's-slipper |
| Cypripedium parviflorum var. pubescens | Greater Yellow Lady's-slipper, Large Yellow Lady's Slipper |
| Cypripedium reginae | Showy Lady's-slipper |
| Dalea candida | White Prairie Clover |
| Dalea purpurea | Purple Prairie Clover |
| Dalea villosa | Silky Prairie Clover, Downy Prairie Clover |
| Dasiphora fruticosa | Shrubby Cinquefoil |
| Daucus carota | Queen Anne's Lace, Wild Carrot, Bird's Nest |
| Decodon verticillatus | Swamp Loosestrife, Water Willow |
| Delphinium carolinianum | Carolina Larkspur, Prairie Larkspur |
| Desmodium canadense | Showy Tick-trefoil, Hoary Tick-trefoil, Canada Tick-clover |
| Desmodium glutinosum | Pointed-leaf Tick-trefoil, Large-flower tickclover |
| Dianthus armeria | Deptford Pink |
| Dicentra canadensis | Squirrel Corn |
| Dicentra cucullaria | Dutchman's Breeches |
| Digitalis lanata | Grecian Foxglove, Woolly Foxglove |
| Dipsacus laciniatus | Cut-leaf Teasel |
| Dodecatheon amethystinum | Jeweled Shooting Star, Amethyst Shooting Star |
| Doellingeria umbellata | Flat-topped White Aster, Flat-top Aster, Parasol Whitetop |
| Draba arabisans | Rock Whitlow-grass, Arabian Whitlow-grass |
| Draba nemorosa | Yellow Whitlow-grass, Woodland Draba, Yellow Whitlow-wort |
| Dracocephalum parviflorum | American Dragonhead |
| Drosera intermedia | Spoon-leaf Sundew, Spatulate-leaved Sundew |
| Drosera rotundifolia | Round-leaved Sundew |
| Dyssodia papposa | Fetid Marigold, Prairie Dogweed, False Dog-fennel |
| Echinacea angustifolia | Narrow-leaved Purple Coneflower, Black-samson Echinacea |
| Echinacea pallida | Pale Purple Coneflower, Pale Echinaceae |
| Echinacea purpurea | Eastern Purple Coneflower |
| Echinocystis lobata | Wild Cucumber |
| Ellisia nyctelea | Aunt Lucy, Waterpod |
| Enemion biternatum | False Rue Anemone |
| Epilobium angustifolium | Fireweed, Rosebay, Great Willowherb |
| Erechtites hieracifolia | Pilewort, American Burnweed, Fireweed |
| Erigeron annuus | Annual Fleabane, Eastern Daisy Fleabane |
| Erigeron philadelphicus | Philadelphia Fleabane, Common Fleabane |
| Erigeron strigosus | Prairie Fleabane, Daisy Fleabane, Rough Fleabane |
| Eriocaulon aquaticum | Common Pipewort, Seven-angle Pipewort |
| Eryngium yuccifolium | Rattlesnake Master, Button Eryngo, Button Snakeroot |
| Erysimum cheiranthoides | Wormseed Wallflower, Worm-seed Mustard |
| Erythronium albidum | White Trout Lily, White Fawn Lily, White Dog-tooth Violet, White Adder's Tongue |
| Erythronium americanum | Yellow Trout Lily, Yellow Adder's-tongue, Dogtooth Violet |
| Erythronium propullans | Dwarf Trout Lily, Minnesota Dwarf Trout Lily, Minnesota Fawnlily, Minnesota Adder's-tongue |
| Escobaria vivipara | Pincushion Cactus, Spiny-star |
| Eupatorium altissimum | Tall Boneset, Tall Thoroughwort |
| Eupatorium perfoliatum | Common Boneset |
| Euphorbia corollata | Flowering Spurge |
| Euphorbia cyathophora | Painted Leaf, Wild Poinsettia, Fire-on-the-mountain |
| Euphorbia cyparissias | Cypress Spurge, Graveyard-weed |
| Euphorbia dentata | Toothed Spurge |
| Euphorbia esula | Leafy Spurge |
| Euphorbia geyeri | Geyer's Spurge, Geyer's Sandmat, Dune Spurge |
| Euphorbia glyptosperma | Ridge-seed Spurge, Rib-seed Sandmat |
| Euphorbia maculata | Spotted Spurge, Prostrate Spurge, Spotted Sandmat |
| Euphorbia nutans | Nodding Spurge, Eyebane, Spotted Spurge |
| Eurybia macrophylla | Large-leaved Aster, Big-leaf Aster |
| Eutrochium maculatum | Spotted Joe-pye Weed, Purple Boneset, Spotted Trumpetweed |
| Eutrochium purpureum | Sweet Scented Joe Pye Weed, Sweet Joe-Pye Weed |
| Fallopia japonica var. japonica | Japanese Knotweed, Mexican Bamboo, Hancock's Curse |
| Fragaria vesca | Woodland Strawberry, American Wood Strawberry |
| Fragaria virginiana | Wild Strawberry, Common Strawberry, Virginia Strawberry |
| Froelichia floridana | Prairie Cottonweed, Plains Snakecotton, Florida Snake-cotton, Field Snake-cotton |
| Gaillardia aristata | Blanketflower, Common Gaillardia, Great Blanket-flower |
| Galearis spectabilis | Showy Orchis, Showy Orchid |
| Galeopsis tetrahit | Brittlestem Hemp-nettle, Common Hemp-nettle |
| Galinsoga quadriradiata | Shaggy Soldier, Quick Weed, Peruvian Daisy |
| Galium aparine | Sticky-willy, Cleavers, Catchweed Bedstraw, Goose-grass |
| Galium asprellum | Rough Bedstraw |
| Galium boreale | Northern Bedstraw |
| Galium concinnum | Shining Bedstraw |
| Galium labradoricum | Labrador Bedstraw, Northern Bog Bedstraw |
| Galium obtusum | Bluntleaf Bedstraw, Wild Madder, Obtuse Bedstraw |
| Galium tinctorium | Stiff Marsh Bedstraw, Clayton's Bedstraw, Wild Madder, Southern Three-lobed Bedstraw |
| Galium trifidum | Three-petal Bedstraw, Northern Three-lobed Bedstraw, Small Bedstraw |
| Galium triflorum | Fragrant Bedstraw, Sweet-scented Bedstraw |
| Galium verum | Yellow Bedstraw, Lady's Bedstraw |
| Gaultheria procumbens | Wintergreen, Eastern Teaberry, Checkerberry |
| Gentiana andrewsii | Bottle Gentian, Closed Bottle Gentian, Andrew's Gentian |
| Gentiana flavida | Yellow Gentian, Cream Gentian, Pale Gentian, Plain Gentian |
| Gentiana rubricaulis | Great Lakes Gentian, Closed Gentian, Red-stemmed Gentian |
| Gentianella quinquefolia | Stiff Gentian, Ague-weed |
| Gentianopsis crinita | Greater Fringed Gentian |
| Gentianopsis procera | Lesser Fringed Gentian, Smaller Fringed Gentian |
| Geranium maculatum | Wild Geranium, Spotted Geranium, Spotted Cranebill, Wild Cranebill Alumroot |
| Geum aleppicum | Yellow Avens |
| Geum canadense | White Avens |
| Geum macrophyllum | Large-leaf Avens |
| Geum triflorum | Prairie Smoke, Old Man's Whiskers |
| Glechoma hederacea | Ground Ivy, Creeping Charlie, Gill-over-the-Ground |
| Glycyrrhiza lepidota | Wild Licorice, American Licorice |
| Gnaphalium uliginosum | Low Cudweed, Marsh Cudweed |
| Goodyera pubescens | Downy Rattlesnake Plantain |
| Goodyera repens | Lesser Rattlesnake Plantain, Dwarf Rattlesnake Plantain |
| Goodyera tesselata | Tesselated Rattlesnake Plantain, Checkered Rattlesnake Plantain |
| Gratiola neglecta | Clammy Hedge-hyssop, Disk Hyssop |
| Grindelia squarrosa | Gumweed, Curlycup Gumweed, Curly-top Gumweed |
| Hackelia deflexa | Nodding Stickseed, American Stickseed |
| Hackelia virginiana | Virginia Stickseed, Beggar's-lice, Sticktight |
| Halenia deflexa | American Spurred Gentian, Green Gentian |
| Hedeoma hispida | Rough False Pennyroyal, Mock Pennyroyal |
| Hedyotis longifolia | Long-leaf Bluets, Long-leaf Houstonia, Long-leaf Summer Bluet |
| Helenium autumnale | Sneezeweed, Common Sneezeweed, Sneezewort, Swamp Sunflower |
| Helianthus annuus | Common Sunflower |
| Helianthus giganteus | Giant Sunflower, Tall Sunflower, Swamp Sunflower |
| Helianthus grosseserratus | Sawtooth Sunflower |
| Helianthus hirsutus | Hairy Sunflower, Hispid Sunflower, Stiff-haired Sunflower |
| Helianthus maximilianii | Maximilian Sunflower |
| Helianthus occidentalis | Few-leaf Sunflower, Naked-stem Sunflower, Western Sunflower |
| Helianthus pauciflorus | Stiff Sunflower, Prairie Sunflower, Few-leaved Sunflower |
| Helianthus petiolaris | Prairie Sunflower, Plains Sunflower |
| Helianthus tuberosus | Jerusalem Artichoke |
| Heliopsis helianthoides | Smooth Oxeye, Common Ox-eye, False Sunflower, Sunflower Heliopsis |
| Hemerocallis fulva | Day Lily, Orange Daylily |
| Heracleum lanatum | Common Cow Parsnip, American Cow-parsnip |
| Hesperis matronalis | Dame's Rocket |
| Heteranthera dubia | Water Star-grass, Grass-leaf Mud-plantain |
| Heterotheca villosa | Hairy False Goldenaster, Hairy Golden-aster |
| Heuchera richardsonii | Prairie Alumroot, Richardson's Alumroot |
| Hibiscus laevis | Halberd-leaved Rose Mallow, Smooth Rose Mallow |
| Hibiscus trionum | Flower of an Hour |
| Hieracium aurantiacum | Orange Hawkweed, Devil's Paintbrush |
| Hieracium caespitosum | Meadow Hawkweed, Yellow King-devil, Field Hawkweed |
| Hieracium longipilum | Hairy Hawkweed, Long-bearded Hawkweed |
| Hieracium piloselloides | Glaucous King-devil, Tall Hawkweed, King-devil Hawkweed |
| Hieracium scabrum | Sticky Hawkweed, Rough Hawkweed |
| Hieracium umbellatum | Narrow-leaf Hawkweed, Rough Hawkweed, Northern Hawkweed |
| Hudsonia tomentosa | Beach Heather, Woolly Beach-heather, False Heather, Woolly Hudsonia, Poverty Grass |
| Hydrophyllum appendiculatum | Appendaged Waterleaf, Great Waterleaf |
| Hydrophyllum virginianum | Virginia Waterleaf, Eastern Waterleaf |
| Hypericum boreale | Northern St. John's-wort |
| Hypericum ellipticum | Pale St. John's-wort, Elliptic-leaved St. John's-wort, Creeping St. John's-wort |
| Hypericum kalmianum | Kalm's St. John's-wort |
| Hypericum majus | Larger Canadian St. Johnswort, Greater St Johnswort |
| Hypericum perforatum | Common St. Johnswort, Klamath-weed |
| Hypericum punctatum | Spotted St. John's-wort |
| Hypericum pyramidatum | Great St. Johnswort, Giant St. John's-wort |
| Hypoxis hirsuta | Yellow Star-grass, Yellow-eyed Grass, Common Goldstar |
| Impatiens capensis | Spotted Touch-me-not, Jewelweed |
| Impatiens pallida | Pale Touch-me-not, Yellow Jewelweed, Yellow Touch-me-not |
| Iris pseudacorus | Pale-yellow Iris, Yellow Flag |
| Iris versicolor | Harlequin Blueflag, Blueflag Iris |
| Jeffersonia diphylla | Twinleaf |
| Kalmia polifolia | Bog Laurel, Pale Laurel, Swamp-laurel |
| Krigia biflora | Two-flowered Cynthia, Two-flowered False Dandelion, Orange Dwarf Dandelion |
| Lactuca biennis | Tall Blue Lettuce, Blue Wood Lettuce |
| Lactuca canadensis | Wild Lettuce, Canadian Lettuce |
| Lactuca serriola | Prickly Lettuce |
| Laportea canadensis | Canadian Wood Nettle |
| Lapsana communis | Common Nipplewort |
| Lathyrus maritimus | Beach Pea |
| Lathyrus ochroleucus | Cream Pea, Pale Pea, Cream Peavine, Pale Vetchling |
| Lathyrus palustris | Marsh Vetchling, Marsh Pea, Wild Pea |
| Lathyrus venosus | Veiny Pea, Bushy Vetchling, Forest Pea |
| Leonurus cardiaca | Motherwort |
| Lespedeza capitata | Round-headed Bush Clover, Rabbit foot, Roundhead Lespedeza |
| Lespedeza leptostachya | Prairie Bush Clover, Prairie Lespedeza, Slender-spike Lespedeza |
| Leucanthemum vulgare | Ox-eye Daisy, Common Daisy, Marguerite |
| Liatris aspera | Rough Blazing Star, Tall Blazing Star, Gayfeather |
| Liatris punctata | Dotted Blazing Star, Dotted Gayfeather, Narrow-leaved Blazing Star |
| Liatris pycnostachya | Prairie Blazing Star, Cat-tail Gayfeather, Thick-spike Gayfeather, Tall Blazing Star |
| Lilium lancifolium | Tiger Lily |
| Lilium michiganense | Michigan Lily |
| Lilium philadelphicum | Wood Lily, Western Orange-cup Lily, Western Red Lily |
| Linaria canadensis | Old-field Toadflax, Blue Toadflax, Canada Toadflax |
| Linaria dalmatica | Dalmatian Toadflax |
| Linaria vulgaris | Butter and Eggs, Yellow Toadflax |
| Lindernia dubia | False Pimpernel, Yellow-seeded False Pimpernel |
| Linnaea borealis | Twinflower |
| Liparis liliifolia | Lily-leaved Twayblade, Brown Widelip Orchid, Large Twayblade, Purple Twayblade, Mauve Sleekwort |
| Liparis loeselii | Loesel's Twayblade, Yellow Widelip Orchid, Bog Twayblade, Fen Orchid |
| Listera cordata | Heart-leaved Twayblade |
| Lithospermum canescens | Hoary Puccoon |
| Lithospermum caroliniense | Carolina Puccoon, Hairy Puccoon, Carolina Gromwell |
| Lithospermum incisum | Narrow-leaf Puccoon, Narrowleaf Stoneseed, Fringed Puccoon, Yellow Puccoon, Narrow-leaf Gromwell |
| Lobelia cardinalis | Cardinal Flower |
| Lobelia dortmanna | Water Lobelia |
| Lobelia inflata | Indian Tobacco |
| Lobelia kalmii | Kalm's Lobelia, Brook Lobelia, Ontario Lobelia |
| Lobelia siphilitica | Blue Lobelia, Great Blue Lobelia, Blue Cardinal Flower |
| Lobelia spicata | Pale-spike Lobelia |
| Lomatium orientale | Northern Idaho Biscuitroot, Oriental Desert Parsley, Salt-and-Pepper |
| Lotus corniculatus | Birds-foot Trefoil, Birdfoot Deervetch |
| Lotus purshianus | American Bird's-foot Trefoil, Prairie Bird's-foot Trefoil |
| Lupinus perennis | Wild Lupine, Sundial Lupine |
| Lupinus polyphyllus | Large-leaved Lupine, Western Lupine, Big-leaf Lupine |
| Lycopus americanus | American Water Horehound, American Bugleweed |
| Lycopus uniflorus | Northern Bugleweed |
| Lysimachia borealis | Starflower |
| Lysimachia ciliata | Fringed Loosestrife |
| Lysimachia hybrida | Lowland Yellow Loosestrife, Hybrid Loosestrife, Lance-leaved Loosestrife |
| Lysimachia nummularia | Creeping Jenny, Moneywort |
| Lysimachia quadriflora | Prairie Loosestrife, Four-flower Yellow Loosestrife, Linear-leaf Loosestrife |
| Lysimachia quadrifolia | Whorled Loosestrife |
| Lysimachia terrestris | Swamp Candles, Swamp Loosestrife, Earth Loosestrife |
| Lysimachia thyrsiflora | Tufted Loosestrife, Water Loosestrife |
| Lysimachia vulgaris | Garden Loosestrife |
| Lythrum alatum | Winged Loosestrife, Wing-angled Loosestrife, Winged Lythrum |
| Lythrum salicaria | Purple Loosestrife |
| Maianthemum canadense | Canada Mayflower, Wild Lily-of-the-valley, False Lily-of-the-valley |
| Maianthemum racemosum | False Solomon's Seal, Solomon's Plume, Feathery False Lily-of-the-Valley |
| Maianthemum stellatum | Starry False Solomon's Seal, Starry Solomon's Plume, Starry False Lily-of-the-Valley |
| Maianthemum trifolium | Three-leaf False Solomon's-seal, Three-leaf Solomon's-plume, Three-leaf False Lily of the Valley |
| Malaxis unifolia | Green Adder's-mouth |
| Malva neglecta | Common Mallow, Cheeses, Cheeseweed |
| Malva rotundifolia | Round-leaved Mallow, Low Mallow, Dwarf Mallow |
| Matricaria discoidea | Pineapple-weed, Disc Mayweed |
| Medicago lupulina | Black Medick |
| Medicago sativa | Alfalfa |
| Melampyrum lineare | Cow Wheat, Narrow-leaf Cow-wheat, American Cow Wheat |
| Melilotus alba | White Sweet Clover |
| Melilotus officinalis | Yellow Sweet Clover |
| Mentha arvensis | Wild Mint, Field Mint |
| Menyanthes trifoliata | Buckbean, Bog Bean, Marsh Trefoil, Water Shamrock |
| Mertensia paniculata | Northern Bluebells, Tall Lungwort, Tall Bluebells, Panicled Bluebells |
| Mertensia virginica | Virginia Bluebells, Virginia Cowslip, Virginia Lungwort |
| Micranthes pensylvanica | Swamp Saxifrage, Eastern Swamp Saxifrage |
| Mimulus glabratus | Round-leaf Monkey Flower |
| Mimulus ringens | Allegheny Monkey Flower, Blue Monkey-flower |
| Minuartia dawsonensis | Rock Sandwort, Rock Stitchwort |
| Mirabilis albida | Hairy Four O'clock |
| Mirabilis nyctaginea | Wild Four O'Clock, Heart-leaf Four O'Clock |
| Mitchella repens | Partridgeberry, Two-eyed Berry, Twin Berry |
| Mitella diphylla | Two-leaf Miterwort, Bishop's Cap |
| Mitella nuda | Naked Miterwort, Small Bishop's Cap |
| Moehringia lateriflora | Bluntleaf Sandwort, Grove Sandwort |
| Mollugo verticillata | Carpetweed, Indian Chickweed, Devil's Grip |
| Monarda fistulosa | Wild Bergamot, Horsemint, Bee Balm, Mint-leaf Bea-balm |
| Monarda punctata | Spotted Horsemint, Spotted Beebalm |
| Moneses uniflora | One-flowered Pyrola, One-flowered Wintergreen, Single Delight |
| Monotropa hypopithys | Pinesap, False Beech Drops |
| Monotropa uniflora | Indian Pipe |
| Mulgedium pulchellum | Showy Blue Lettuce |
| Myosoton aquaticum | Giant Chickweed |
| Nasturtium officinale | Watercress, Small-leaved Water-cress |
| Nelumbo lutea | American Lotus, Wab-bis-sa-pin, Tewape, Water-Chinquapin, Sacred Bean |
| Nepeta cataria | Catnip, Cat mint |
| Nothocalais cuspidata | Prairie False Dandelion, Sharp-point Prairie Dandelion, Wavy-leaf Agoseris |
| Nuphar variegata | Yellow Pond-lily, Bullhead Lily, Varigated Yellow Pond-lily |
| Nymphaea odorata | American White Water-lily, Fragrant White Water-lily |
| Oenothera biennis | Common Evening Primrose |
| Oenothera clelandii | Cleland's Evening Primrose, Sand Evening Primrose |
| Oenothera nuttallii | Nuttall's Evening Primrose, White-stemmed Evening Primrose |
| Oenothera parviflora | Northern Evening Primrose, Small-flowered Evening Primrose |
| Oenothera perennis | Small Sundrops, Little Evening-primrose, Perennial Evening-primrose |
| Oenothera rhombipetala | Fourpoint Evening Primrose, Rhombic Evening Primrose |
| Onopordum acanthium | Scotch Thistle, Scotch Cotton-thistle |
| Onosmodium molle | False Gromwell, Soft-hair Marbleseed |
| Opuntia fragilis | Brittle Prickly Pear, Fragile Prickly Pear, Little Prickly Pear |
| Opuntia macrorhiza | Plains Prickly Pear, Twist-spine Pricklypear |
| Orobanche ludoviciana | Louisiana Broomrape, Prairie Broom-rape |
| Orthilia secunda | One-sided Pyrola, One-sided Shinleaf, One-sided Wintergreen, Sidebells Wintergreen |
| Osmorhiza claytonii | Sweet Cicely, Clayton's Sweetroot |
| Osmorhiza longistylis | Aniseroot, Long-style Sweetroot, Smoother Sweet Cicely |
| Oxalis dillenii | Southern Wood Sorrel, Slender Yellow Wood Sorrel |
| Oxalis stricta | Yellow Wood Sorrel, Common Yellow Oxalis |
| Oxalis violacea | Violet Wood Sorrel |
| Packera aurea | Golden Ragwort, Heart-leaved Groundsel |
| Packera paupercula | Balsam Ragwort, Balsam Grounsel |
| Packera plattensis | Prairie Ragwort, Prairie Groundsel |
| Packera pseudaurea | Western Heart-leaved Groundsel, False Gold Groundsel |
| Panax quinquefolius | American Ginseng, Wild Ginseng |
| Panax trifolius | Dwarf Ginseng |
| Parietaria pensylvanica | Pennsylvania Pellitory |
| Pastinaca sativa | Wild Parsnip |
| Pedicularis canadensis | Wood Betony, Canadian Lousewort, Common Lousewort |
| Pedicularis lanceolata | Swamp Lousewort, Swamp Betony |
| Pediomelum argophyllum | Silverleaf Scurfpea, Silverleaf Indian Breadroot |
| Pediomelum esculentum | Prairie Turnip, Large Indian Breadroot, Indian Turnip |
| Penstemon albidis | White Beardtongue, White Penstemon |
| Penstemon gracilis | Slender Beardtongue, Lilac Penstemon, Slender Penstemon |
| Penstemon grandiflorus | Large Beardtongue, Large-flowered Beardtongue, Large-flowered Penstemon |
| Penthorum sedoides | Ditch Stonecrop |
| Persicaria amphibia | Swamp Smartweed, Longroot Smartweed, Water Knotweed |
| Persicaria virginiana | Jumpseed |
| Phemeranthus rugospermus | Rough-seeded Fameflower, Sand Fameflower, Prairie Fameflower |
| Phlox divaricata | Wild Blue Phlox, Woodland Phlox |
| Phlox pilosa | Prairie Phlox, Downy Phlox |
| Phryma leptostachya | American Lopseed |
| Phyla lanceolata | Lance-leaf Fog Fruit, Northern Fog Fruit |
| Physalis heterophylla | Clammy Ground Cherry |
| Physalis virginiana | Virginia Ground Cherry |
| Physaria ludoviciana | Bladderpod, Lousiana Bladder-pod |
| Physostegia virginiana | Obedient Plant, False Dragonhead |
| Pilea fontana | Black-fruited Clearweed, Lesser Clearweed, Bog Clearweed |
| Pilea pumila | Dwarf Clearweed, Canadian Clearweed |
| Pinguicula vulgaris | Butterwort |
| Plantago lanceolata | English Plantain, Narrow-leaf Plantain, Buckhorn Plantain |
| Plantago major | Common Plantain, Broad-leaf Plantain |
| Plantago rugelii | Rugel's Plantain, Black-seed Plantain |
| Platanthera clavellata | Small Green Wood Orchid, Green Woodland Orchid, Club-spur Orchid |
| Platanthera dilatata | Tall White Bog Orchid, Scentbottle, Leafy White Orchis |
| Platanthera flava var. herbiola | Tubercled Rein Orchid, Pale Green Orchid, Pale Green Orchis |
| Platanthera hookeri | Hooker's Orchid |
| Platanthera hyperborea | Northern Green Orchid, Northern Bog Orchid |
| Platanthera lacera | Ragged Fringed Orchid, Green Fringed Orchid, Ragged Orchis |
| Platanthera obtusata | Blunt-leaved Orchid, Small Northern Bog Orchid |
| Platanthera orbiculata | Large Round-leaved Orchid, Lesser Round-leaved Orchid |
| Platanthera praeclara | Western Prairie Fringed Orchid, Great Plains White Fringed Orchid |
| Platanthera psycodes | Lesser Purple Fringed Orchid, Small Purple Fringed Orchis |
| Podophyllum peltatum | Mayapple, Wild Mandrake, Ground Lemon |
| Pogonia ophioglossoides | Rose Pogonia, Snake-mouth Orchid, Adder's-mouth Pogonia |
| Polanisia dodecandra | Red-whisker Clammyweed |
| Polemonium reptans | Spreading Jacob's Ladder, Greek Valerian, Creeping Polemonium |
| Polygala cruciata | Cross-leaved Milkwort, Drumheads |
| Polygala paucifolia | Gaywings, Fringed Milkwort, Flowering Wintergreen |
| Polygala polygama | Racemed Milkwort, Purple Milkwort |
| Polygala sanguinea | Blood Milkwort, Purple Milkwort, Field Milkwort |
| Polygala senega | Seneca Snakeroot, Mountain Flax, Rattlesnake Snakeroot |
| Polygala verticillata | Whorled Milkwort |
| Polygonatum biflorum | Smooth Solomon's Seal, Giant Solomon's Seal |
| Pontederia cordata | Pickerelweed |
| Potentilla anserina | Silverweed Cinquefoil, Silver-weed |
| Potentilla argentea | Silver Cinquefoil, Silvery Cinquefoil |
| Potentilla arguta | Tall Cinquefoil, Prairie Cinquefoil |
| Potentilla norvegica | Rough Cinquefoil, Norwegian Cinquefoil |
| Potentilla recta | Sulphur Cinquefoil, Rough-fruited Cinquefoil |
| Potentilla simplex | Common Cinquefoil |
| Prenanthes alba | White Rattlesnake-root, White Lettuce, Lion's-foot |
| Primula mistassinica | Mistassini Primrose, Bird's-eye Primrose, Dwarf Canadian Primrose |
| Prunella vulgaris | Self-heal, Heal-all |
| Pseudognaphalium obtusifolium | Sweet Everlasting, Cat-foot, Rabbit-tobacco, Fragrant Cudweed |
| Pycnanthemum virginianum | Virginia Mountain Mint |
| Pyrola americana | Round-leaved Pyrola, American Wintergreen |
| Pyrola asarifolia | Pink Pyrola |
| Pyrola chlorantha | Green-flowered Pyrola |
| Pyrola elliptica | Shinleaf, Waxflower Shinleaf, Wild Lily-of-the-valley |
| Ranunculus abortivus | Little-leaf Buttercup, Kidney-leaf Buttercup, Small-flower Crowfoot |
| Ranunculus acris | Tall Buttercup, Common Buttercup, Crowfoot |
| Ranunculus aquatilis | White Water Crowfoot, Long-beak Buttercup |
| Ranunculus cymbalaria | Alkali Buttercup, Seaside Crowfoot |
| Ranunculus fascicularis | Early Buttercup, Tufted Buttercup |
| Ranunculus flabellaris | Yellow Water Buttercup, Yellow Water Crowfoot |
| Ranunculus hispidus | Hispid Buttercup, Bristly Buttercup, Swamp Buttercup, Marsh Buttercup |
| Ranunculus pensylvanicus | Pennsylvania Buttercup, Bristly Buttercup, Bristly Crowfoot |
| Ranunculus recurvatus | Hooked Buttercup, Blisterwort, Hooked Crowfoot |
| Ranunculus rhomboideus | Prairie Buttercup, Labrador Buttercup |
| Ranunculus sceleratus | Cursed Crowfoot, Celery-leaf Buttercup, Cursed Buttercup |
| Raphanus raphanistrum | Jointed Charlock, Wild Radish |
| Ratibida columnifera | Prairie Coneflower, Upright Prairie Coneflower, Long-headed Coneflower |
| Ratibida pinnata | Gray-headed Coneflower, Pinnate Prairie Coneflower, Yellow Coneflower |
| Rhododendron groenlandicum | Labrador Tea |
| Rorippa palustris | Bog Yellow-cress, Marsh Yellow Cress |
| Rorippa sinuata | Spreading Yellow-cress, Creeping Yellow Cress, Western Yellowcress |
| Rorippa sylvestris | Creeping Yellow-cress |
| Rosa acicularis | Prickly Wild Rose, Prickly Rose |
| Rosa arkansana | Prairie Rose, Wild Rose |
| Rosa blanda | Smooth Wild Rose, Smooth Rose, Meadow Rose |
| Rudbeckia hirta | Black-eyed Susan |
| Rudbeckia laciniata | Cut-leaf Coneflower, Green-headed Coneflower, Tall Coneflower, Golden Glow |
| Rudbeckia triloba | Brown-eyed Susan, Three-lobed Coneflower |
| Rumex crispus | Curly Dock, Curled Dock, Yellow Dock |
| Sagina nodosa | Knotty Pearlwort, Knotted Pearlwort |
| Sagittaria latifolia | Broad-leaf Arrowhead, Common Arrowhead, Duck Potato |
| Salvia reflexa | Lance-leaved Sage, Rocky Mountain Sage, Mintweed |
| Sanguinaria canadensis | Bloodroot |
| Saponaria officinalis | Bouncing Bet, Soapwort |
| Sarracenia purpurea | Purple Pitcher Plant, Northern Pitcher Plant |
| Scilla siberica | Siberian Squill |
| Scrophularia lanceolata | Lance-leaf Figwort, Early Figwort, Hare Figwort |
| Scutellaria galericulata | Marsh Skullcap, Common Skullcap |
| Scutellaria lateriflora | Mad-dog Skullcap, Blue Skullcap |
| Scutellaria leonardii | Leonard's Skullcap, Small Skullcap |
| Sibbaldiopsis tridentata | Three-toothed Cinquefoil, Wineleaf Potentilla |
| Sicyos angulatus | Bur Cucumber, Oneseed Burr Cucumber |
| Silene csereii | Balkan Catchfly |
| Silene latifolia | White Campion, Bladder Campion, White Cockle |
| Silphium perfoliatum | Cup Plant |
| Sinapis arvensis | Charlock, Wild Mustard, Field Mustard |
| Sisymbrium altissimum | Tall Tumble Mustard, Jim Hill Mustard |
| Sisymbrium loeselii | Tall Hedge Mustard, Small Tumbleweed Mustard |
| Sisyrinchium campestre | Prairie Blue-eyed Grass, White-eyed Grass |
| Sium suave | Water Parsnip, Hemlock Water Parsnip |
| Solanum dulcamara | Bittersweet Nightshade, Climbing Nightshade, Deadly Nightshade, Woody Nightshade |
| Solanum rostratum | Buffalo Bur Nightshade, Kansas Thistle |
| Solidago canadensis | Canada Goldenrod, Tall Goldenrod |
| Solidago flexicaulis | Zigzag Goldenrod, Broad-leaved Goldenrod |
| Solidago hispida | Hairy Goldenrod |
| Solidago juncea | Early Goldenrod |
| Solidago nemoralis | Gray Goldenrod, Field Goldenrod, Old-field Goldenrod |
| Solidago ptarmicoides | Upland White Goldenrod, Prairie Goldenrod, Sneezewort Aster |
| Solidago riddellii | Riddell's Goldenrod |
| Solidago rigida | Stiff Goldenrod |
| Solidago sciaphila | Cliff Goldenrod, Driftless Goldenrod, Shadowy Goldenrod |
| Solidago speciosa | Showy Goldenrod |
| Solidago uliginosa | Bog Goldenrod |
| Solidago ulmifolia | Elm-leaved Goldenrod |
| Sonchus arvensis | Perennial Sowthistle, Field Sowthistle |
| Sonchus asper | Spiny Sowthistle, Prickly Sowthistle |
| Sonchus oleraceus | Common Sowthistle, Annual Sowthistle |
| Sphaeralcea coccinea | Scarlet Globe-mallow, Cowboy's Delight, Red False Mallow |
| Spiraea alba | White Meadowsweet |
| Spiraea tomentosa | Steeplebush, Hardhack |
| Spiranthes casei | Case's Ladies'-tresses |
| Spiranthes cernua | Nodding Ladies'-tresses |
| Spiranthes lacera | Northern Slender Ladies'-tresses |
| Spiranthes magnicamporum | Great Plains Ladies'-tresses, Late-flowering Ladies-tresses |
| Spiranthes romanzoffiana | Hooded Ladies'-tresses |
| Stachys hispida | Hairy Hedge Nettle, Rough Hedge Nettle |
| Stachys palustris | Marsh Hedge Nettle, Woundwort |
| Stellaria longifolia | Long-leaf Starwort, Long-leaved Stitchwort |
| Stellaria media | Common Chickweed |
| Strophostyles helvola | Wild Bean, Trailing Fuzzybean, Trailing Wild Bean, Amberique-bean |
| Strophostyles leiosperma | Trailing Pea, Slick-seed Fuzzybean, Small Fuzzy-bean, Smooth-seed Wild Bean |
| Symphyotrichum ciliolatum | Lindley's Aster, Ciliolate Aster, Northern Heart-leaved Aster |
| Symphyotrichum ericoides | Heath Aster, White Heath Aster |
| Symphyotrichum laeve | Smooth Blue Aster |
| Symphyotrichum novae-angliae | New England Aster |
| Symphyotrichum oblongifolium | Aromatic Aster, Fall Aster |
| Symphyotrichum oolentangiense | Sky-blue Aster, Azure Aster |
| Symphyotrichum puniceum | Purple-stemmed Aster, Red-stem Aster, Swamp Aster |
| Symphyotrichum sericeum | Silky Aster, Western Silver Aster |
| Symplocarpus foetidus | Skunk Cabbage |
| Taenidia integerrima | Yellow Pimpernel |
| Tanacetum vulgare | Common Tansy, Golden-buttons |
| Taraxacum officinale | Common Dandelion |
| Tephroseris palustris | Marsh Ragwort, Marsh Fleabane, Swamp Ragwort, Swamp Groundsel |
| Tephrosia virginiana | Goat's-rue, Virginia Tephrosia, Catgut, Hoary-pea, Rabbit-pea |
| Teucrium canadense | Germander, Canada Germander, American Germander, Wood Sage |
| Thalictrum dasycarpum | Tall Meadow Rue, Purple Meadow Rue |
| Thalictrum dioicum | Early Meadow Rue, Quicksilver-weed |
| Thalictrum thalictroides | Rue Anemone, Meadowrue |
| Thlaspi arvense | Field Pennycress |
| Torilis japonica | Japanese Hedge Parsley, Erect Hedge Parsley |
| Toxicodendron rydbergii | Western Poison Ivy |
| Tradescantia bracteata | Long-bracted Spiderwort, Bracted Spiderwort |
| Tradescantia occidentalis | Spiderwort, Prairie Spiderwort, Western Spiderwort |
| Tradescantia ohiensis | Ohio Spiderwort, Bluejacket |
| Tragopogon dubius | Yellow Goat's Beard, Yellow Salsify, Fistulous Goat's-beard |
| Tragopogon pratensis | Meadow Goat's Beard, Showy Goat's-beard, Meadow Salsify, Jack-go-to-bed-at-noon |
| Triadenum fraseri | Fraser's Marsh St. Johnswort, Bog St. John's-wort |
| Trifolium arvense | Rabbit-foot Clover |
| Trifolium aureum | Golden Clover, Palmate Hop Clover, Yellow Hop Clover |
| Trifolium campestre | Low Hop Clover, Field Clover, Plains Clover |
| Trifolium hybridum | Alsike Clover |
| Trifolium pratense | Red Clover |
| Trifolium repens | White Clover, Dutch Clover |
| Trillium cernuum | Nodding Trillium, Whip-poor-will Flower |
| Trillium flexipes | Drooping Trillium, Nodding Wake-robin, Declined Trillium, Bent Trillium |
| Trillium grandiflorum | Large-flowered Trillium, White Trillium, Snow Trillium, White Wake Robin |
| Trillium nivale | Snow Trillium, Dwarf White Trillium, Dwarf White Wake-robin |
| Triosteum aurantiacum | Early Horse Gentian, Orange-fruited Horse Gentian, Scarlet-fruited Horse Gentian |
| Triosteum perfoliatum | Late Horse Gentian, Fever-wort, Wild Coffee |
| Turritis glabra | Tower Mustard, Tower Rockcress |
| Typha latifolia | Broad-leaf Cat-tail, Common Cattail |
| Urtica dioica | Stinging Nettle, California Nettle |
| Utricularia cornuta | Horned Bladderwort, Spurred Bladderwort |
| Utricularia intermedia | Flat-leaved Bladderwort |
| Utricularia macrorhiza | Common Bladderwort, Greater Bladderwort, Hooded Water-Milfoil |
| Uvularia grandiflora | Large-flowered Bellwort |
| Uvularia sessilifolia | Sessile-leaf Bellwort, Straw Lily, Wild Oats |
| Valeriana officinalis | Garden Heliotrope, Garden Valerian, White Valerian |
| Verbascum thapsus | Common Mullein, Great Mullein |
| Verbena bracteata | Big-bract Verbena, Prostrate Vervain, Bracted Vervain |
| Verbena hastata | Blue Vervain, Swamp Verbena |
| Verbena stricta | Hoary Vervain, Hoary Verbena |
| Verbena urticifolia | White Vervain, Nettle-leaf Vervain |
| Vernonia fasciculata | Prairie Ironweed, Western Ironweed, Smooth Ironweed |
| Veronica americana | American Speedwell, American Brooklime |
| Veronica arvensis | Corn Speedwell, Wall Speedwell |
| Veronica catenata | Water Speedwell, Pink Water Speedwell |
| Veronica peregrina | Purslane Speedwell, Neckweed |
| Veronica scutellata | Marsh Speedwell, Narrow-leaved Speedwell, Skullcap Speedwell |
| Veronica serpyllifolia | Thyme-leaf Speedwell |
| Veronicastrum virginicum | Culver's Root |
| Vicia americana | American Vetch, Purple Vetch |
| Vicia sativa | Common Vetch, Spring Vetch, Garden Vetch |
| Vicia villosa | Hairy Vetch, Winter Vetch |
| Viola adunca | Sand Violet, Hooked-spur Violet, Western Dog Violet, Early Blue Violet |
| Viola blanda | Sweet White Violet, Big-leaved White Violet |
| Viola canadensis | Canadian White Violet, Canada Violet, Rugulose Violet |
| Viola conspersa | Dog Violet, American Dog Violet, Alpine Violet, Labrador Violet |
| Viola cucullata | Marsh Blue Violet, Hooded Violet |
| Viola lanceolata | Lance-leaved Violet, Bog White Violet, Strap-leaved Violet |
| Viola macloskeyi | Small White Violet, Northern White Violet |
| Viola nephrophylla | Northern Bog Violet |
| Viola novae-angliae | New England Violet |
| Viola nuttallii | Yellow Prairie Violet, Nuttall's Violet |
| Viola palmata var. pedatifida | Prairie Violet, Bearded Birdfoot Violet |
| Viola pedata | Birdfoot Violet, Beardless Birdfoot Violet |
| Viola pubescens | Downy Yellow Violet, Smooth Yellow Violet |
| Viola renifolia | Kidney-leaved Violet |
| Viola sagittata | Arrow-leaved Violet, Arrowhead Violet |
| Viola sororia | Common Blue Violet, Woolly Blue Violet, Northern Blue Violet |
| Viola ×primulifolia | Primrose-leaved Violet |
| Zigadenus elegans | Mountain Death Camas, White Camas |
| Zizia aptera | Heart-leaved Alexanders, Meadow Zizia |
| Zizia aurea | Golden Alexanders, Golden Zizia |