Chiwaukee Prairie Plant List by Scientific Name....
This plant list was originally compiled by Hugh Iltis and Jim Zimmerman and later published by Eugene Gasiorkiewicz in 1986.
A B C D E F G H I J K L M N O P Q R S T U V X Z
| Scientific Name | Common Name | Family | Status |
|---|---|---|---|
| Abutilon theothrasti | Velvet Leaf | Malvaceae | |
| Acer negundo | Box elder | Aceraceae | |
| Acer saccharinum | Silver maple | Aceraceae | |
| Achillea millefolium | Yarrow | Poaceae | |
| Agropyron repens | Quack grass | Poaceae | |
| Agrostis scabra | Hair grass | Poaceae | |
| Aletris farinosa | Unicorn root | Liliaceae | |
| Alisma plantago aquatica | Water plantain | Alismaceae | |
| Allium canadense | Wild garlic | Liliaceae | |
| Allium cernuum | Nodding wild onion | Liliaceae | |
| Ambrosia artemisifolia | Common ragweed | Asteraceae | |
| Ambrosia trifida | Giant ragweed | Asteraceae | |
| Amorpha canescens | Leadplant | Fabaceae | |
| Amphicarpa bracteata | Hog peanut | Fabaceae | |
| Andropogon gerardi | Big bluestem | Poaceae | |
| Andropogon gerardi | Turkey foot | Poaceae | |
| Andropogon scoparius | Little blue stem | Poaceae | |
| Anemone canadensis | Meadow anemone | Ranunculaceae | |
| Anemone canadensis | Windflower | Ranunculaceae | |
| Anemone cylindrica | Thimble weed | Ranunculaceae | |
| Anemone quinquifolia interior | Wood anemone | Ranunculaceae | |
| Antennaria neglecta | Cats foot | Asteraceae | |
| Antennaria neglecta | Ladies' tobacco | Asteraceae | |
| Antennaria neglecta | Pussytoes | Asteraceae | |
| Apios americana | Ground nut | Fabaceae | |
| Apocynum androsaemifolium | Spreading dogbane | Apocynaceae | |
| Apocynum cannabinum | Indian hemp | Apocynaceae | |
| Arabis lyrata | Rock cress | Brassicaceae | |
| Arabis lyrata | Sandcress | Brassicaceae | |
| Arctium minus | Burdock | Compositeae | |
| Arenaria lateriflora | Wood sandwort | Caryophyllaceae | |
| Arenaria stricta | Stiff sandwort | Caryophyllaceae | |
| Aristida intermedia | Three-awn grass | Poaceae | |
| Artemesia caudata | Wormwood | Asteraceae | |
| Asclepias amplexicaulis | Sand milkweed | Asclepiadaceae | |
| Asclepias hirtella | Tall green milkweed | Asclepiadaceae | |
| Asclepias incarnata | Swamp milkweed | Asclepiadaceae | |
| Asclepias purpurascens | Purple milkweed | Asclepiadaceae | endangered |
| Asclepias syriaca | Common milkweed | Asclepiadaceae | |
| Asclepias tuberosa | Butterfly weed | Asclepiadaceae | |
| Asclepias verticillata | Whorled milkweed | Asclepiadaceae | |
| Asclepias viridiflora | Short green milkweed | Asclepiadaceae | |
| Asparagus officinalis | Asparagus | Liliaceae | |
| Aster azureus | Sky blue aster | Asteraceae | |
| Aster ericoides | Many-flowered aster | Asteraceae | |
| Aster laevis | Smooth blue aster | Asteraceae | |
| Aster novae-angliae | New England aster | Asteraceae | |
| Aster ptarmicoides | Stiff aster | Asteraceae | |
| Aster umbellatus | Flat top aster | Asteraceae | |
| Astragalus canadensis | Canadian milk vetch | Fabaceae | |
| Baptisia leucantha | Prairie false indigo | Fabaceae | |
| Baptisia leucantha | White wild indigo | Fabaceae | |
| Baptisia leucophaea | False indigo | Fabaceae | |
| Barbarea vulgaris | Yellow rocket | Brassicaceae | |
| Bidens cernua | Nodding bur-marigold | Asteraceae | |
| Brassica kaber pinnatifida | Charlock | Brassicaceae | |
| Brassica kaber pinnatifida | Crunchweed | Brassicaceae | |
| Bromus kalmii | Prairie brome grass | Poaceae | |
| Bromus latiglumus | Ear leaved brome | Poaceae | |
| Bromus tectorum | Downy brome | Poaceae | |
| Cacalia tuberosa | Indian plantain | Asteraceae | threatened |
| Calamagrostis canadensis | Blue joint grass | Poaceae | |
| Calamovilfa longifolia magna | Sand reed | Poaceae | threatened |
| Calopogon pulchellus | Grass pink | Orchidaceae | |
| Calopogon pulchellus | Swamp pink | Orchidaceae | |
| Caltha palustris | Marsh marigold | Ranunculaceae | |
| Campanula aparinoides | Marsh bellflower | Campanulaceae | |
| Cardamine bulbosa | Bulbous cress | Brassicaceae | |
| Cardamine bulbosa | Spring cress | Brassicaceae | |
| Carex abbii | Sedge | Cyperaceae | |
| Carex aquatilis altior | Sedge | Cyperaceae | |
| Carex bebbii | Sedge | Cyperaceae | |
| Carex bichnelli | Sedge | Cyperaceae | |
| Carex buxbaumii | Sedge | Cyperaceae | |
| Carex conoidea | Sedge | Cyperaceae | |
| Carex crawei | Crawe Sedge | Cyperaceae | |
| Carex diandra | Sedge | Cyperaceae | |
| Carex festucacea | Sedge | Cyperaceae | |
| Carex filiculmis | Sedge | Cyperaceae | |
| Carex granularis haleana | Sedge | Cyperaceae | |
| Carex hystricina | Bottle brush sedge | Cyperaceae | |
| Carex lanuginosa | Wooly sedge | Cyperaceae | |
| Carex meadii | Head's sedge | Cyperaceae | |
| Carex muhlenbergii | Sand sedge | Cyperaceae | |
| Carex normalis | Sand sedge | Cyperaceae | |
| Carex pensylvanica | Pennsylvania sedge | Cyperaceae | |
| Carex prairea | Sand sedge | Cyperaceae | |
| Carex richardsonii | Pennsylvania sedge | Cyperaceae | |
| Carex sartwellii | Pennsylvania sedge | Cyperaceae | |
| Carex schweintzii | Schweinitz's Sedge | Cyperaceae | endangered |
| Carex sterilis | Pennsylvania sedge | Cyperaceae | |
| Carex stipata | Pennsylvania sedge | Cyperaceae | |
| Carex stricta | Pennsylvania sedge | Cyperaceae | |
| Carex tetanica | Pennsylvania sedge | Cyperaceae | |
| Carex tribuloides | Pennsylvania sedge | Cyperaceae | |
| Carex vulpinoidea | Fox sedge | Cyperaceae | |
| Castilleia coccinea | Indian paint brush | Scrophulariaceae | |
| Castilleia coccinea | Painted cup | Scrophulariaceae | |
| Ceanothus americanus | New Jersey tea | Rhamnaceae | |
| Cephalanthus occidentalis | Buttonbush | Rubiaceae | |
| Chelone glabra | Turtlehead | Scrophulariaceae | |
| Chenopodium album | Lamb's quarters | Chenopodiaceae | |
| Chrysanthemum leucanthemum pinnatifidum | Chrysanthemum | Asteraceae | |
| Cichorium intybus | Chicory | Asteraceae | |
| Cicuta maculata | Water-hemlock | Apiaceae | |
| Cirsium arvense | Canada thistle | Asteraceae | non-native |
| Cirsium discolor | Thistle | Asteraceae | |
| Cirsium muticum | Swamp thistle | Asteraceae | |
| Cladium mariscoides | Twig rush | Cyperaceae | |
| Comandra richardsiana | Bastard toadflax | Santalaceae | |
| Comandra umbellata | False toadflax | Santalaceae | |
| Convolvulus sepium | Hedge bindweed | Convolvulaceae | |
| Coreopsis lanceolata villosa | Sand coreopsis | Asteraceae | |
| Coreopsis palmata | Prairie coreopsis | Asteraceae | |
| Cornus amonum | Silky dogwood | Cornaceae | |
| Cornus stolonifera | Red osier dogwood | Cornaceae | |
| Corylus americana | American hazelnut | Betulaceae | |
| Crataegus sp. | Hawthorn | Rosaceae | |
| Curcurbita foetidissima | Missouri grourel | Curcurbitaceae | |
| Cuscuta glomerata | Dodder | Convolvulaceae | |
| Cypripedium parviflorum | Small Yellow lady slipper | Orchidaceae | |
| Daucus carota | Wild Carrot | Umbelliferae | non-native |
| Desmodium canadensis | Showy Tick trefoil | Fabaceae | |
| Dodecatheon meadia | Shooting star | Primulaceae | |
| Dryopteris thelypteris | Marsh fern | Polypodiaceae | |
| Dryopteris thelypteris pubescens | Marsh fern | Polypodiaceae | |
| Echinochloa crusgalli | Barnyard grass | Poaceae | |
| Echinocystis lobata | Wild cucumber | Cucurbitaceae | |
| Eleocharis acicularis | Needle spoke rush | Cyperaceae | |
| Eleocharis calva | Spike rush | Cyperaceae | |
| Eleocharis compressa | Flat stemmed spike rush | Cyperaceae | |
| Eleocharis elliptica | Spike rush | Cyperaceae | |
| Eleocharis erythropado | Spike rush | Cyperacaea | |
| Elodea canadensis | Common water weed | Hydrocharitaceae | |
| Elodea canadensis | Elodea | Hydrocharitaceae | |
| Elymus canadensis | Canada wild rye grass | Poaceae | |
| Epilobium coloratum | Cinnamon willow herb | Onagraceae | |
| Epilobium hirsutum | Hairy willow-herb | Onagraceae | non-native |
| Eqisetum arvense | Common horse tail | Equisetaceae | |
| Equisetum fluviatile | Swamp horse tail | Equisetaceae | |
| Equisetum hymale | Smooth scouring rush | Equisetaceae | |
| Erigeron philadelphicus | Marsh fleabane | Asteraceae | |
| Erigeron strigosis | Daisy fleabane | Asteraceae | |
| Eriophorum angustifolium | Narrow leaved cotton grass | Cyperaceae | |
| Erucastrum gallicum | Dog mustard rocket weed | Brassicaceae | |
| Eryngium yuccifolium | Rattlesnake master | Apiaceae | |
| Eupatorium maculatum | Spotted Joe pye weed | Asteraceae | |
| Eupatorium perfoliatum | Common Boneset | Asteraceae | |
| Eupatorium perfoliatum | Thoroughwort | Asteraceae | |
| Eupatorium rugosum | White snakeroot | Aceraceae | |
| Euphorbia corrolata | Flowering spurge | Euphorbiaceae | |
| Euphorbia cyparissias | Cypress spurge | Euphorbiaceae | |
| Festuca elatior | Meadow fescue | Poaceae | |
| Fimbristylis drummondii | Chestnut sedge | Cyperaceae | endangered |
| Fragaria virginiana | Wild strawberry | Rosaceae | |
| Galium aparine | Annual bedstraw | Rubiaceae | |
| Galium aparine | Cleavers | Rubiaceae | |
| Galium boreale | Northern bedstraw | Rubiaceae | |
| Galium obstusum | Bedstraw | Rubiaceae | |
| Galium obstusum | Wild madder | Rubiaceae | |
| Gentiana andrewsii | Bottle gentian | Gentianaceae | |
| Gentiana andrewsii | Closed gentian | Gentianaceae | |
| Gentiana crinita | Fringed gentian=Gentianopsis crinita | Gentianaceae | |
| Gentiana procera | Fringed gentian=Gentianopsis procera | Gentianaceae | |
| Gentiana puberula | Downy gentian | Gentianaceae | |
| Gentiana puberula | Prairie gentian=Gentiana puberlenta | Gentianaceae | |
| Gentianopsis crinita | Fringed gentian | Gentianaceae | |
| Gentianopsis procera | Small fringed gentian | Gentianaceae | |
| Geranium maculatum | Wild geranium | Geraniaceae | |
| Gerardia aspera | Gerardia | Scrophulariaceae | |
| Gerardia aspera | Rough false foxglove | Scrophulariaceae | |
| Gerardia purpurea | Gerardia | Scrophulariaceae | |
| Gerardia purpurea | Purple false foxglove | Scrophulariaceae | |
| Geum triflorum | Prairie smoke | Rosaceae | |
| Glyceria striata | Fowl meadow grass | Poaceae | |
| Gnaphalium obtusifolium | Cud weed | Asteraceae | |
| Gnaphalium obtusifolium | Everlasting | Asteraceae | |
| Helenium autumnale | Sneezeweed | Asteraceae | |
| Helianthemum canadense | Frostweed | Cistaceae | |
| Helianthemum canadense | Rockrose | Cistaceae | |
| Helianthus grosseserratus | Sawtooth sunflower | Asteraceae | |
| Helianthus occidentalis | Western sunflower | Asteraceae | |
| Helianthus strumosus | Pale leaved sunflower | Asteraceae | |
| Heliopsis helianthoides | False sunflower | Asteraceae | |
| Heracleum lanatum | Cow parsnip | Apiaceae | |
| Heracleum maximum | Cow parsnip | Apiaceae | |
| Hesperius matronalis | Dame's violet | Brassicaceae | |
| Heuchera richardsonii | Prairie alumroot | Saxifragaceae | |
| Hieracium canadense fasciculatum | Canada hawkweed | Asteraceae | |
| Hierochloe odorata | Sweet grass | Poaceae | |
| Hierochloe odorata | Vanilla grass | Poaceae | |
| Hordeum jubatem | Squirrel tail grass | Poaceae | |
| Hordeum jubatum | Wild barley | Poaceae | |
| Hydrophyllum virginica | Virginia water leaf | Hydrophyllaceae | |
| Hypericum canadense | Canadian St. John's wort | Hypericaceae | |
| Hypericum kalmianum | Kalm's St. John's wort | Hypericaceae | |
| Hypoxis hirsuta | Star grass | Amaryllidaceae | |
| Hypoxis hirsuta | Yellow star grass | Amaryllidaceae | |
| Impatiens capensis | Orange jewelweed | Balsaminaceae | |
| Impatiens capensis | Touch-me-not | Balsaminaceae | |
| Impatiens pallida | Yellow jewel weed | Balsaminaceae | |
| Iris virginica shrevei | Blue flag | Iridaceae | |
| Iris virginica shrevei | Wild flag | Iridaceae | |
| Juncus balticus littoralis | Lake shore rush | Juncaceae | |
| Juncus bufonius | Toad rush | Juncaceae | |
| Juncus canadansis | Canadian rush | Juncaceae | |
| Juncus greenei | Green's rush | Juncaceae | |
| Juncus nodosus | Joint rush | Juncaceae | |
| Koeleria cristata | Junegrass | Poaceae | |
| Krigia biflora | Dwarf dandelion | Asteraceae | |
| Krigia biflora | False dandelion | Asteraceae | |
| Kuhnia eupatorioides | False boneset | Asteraceae | |
| Lactuca canadensis | Wild lettuce | Asteraceae | |
| Lathyrus japonicus glaber | Beach pea | Fabaceae | |
| Lathyrus ochroleucus | Pale vetchling | Fabaceae | |
| Lathyrus ochroleucus | Wild pea | Fabaceae | |
| Lathyrus palustris | Marsh vetchling | Fabaceae | |
| Lathyrus venosus intonsus | Veiny pea | Fabaceae | |
| Lathyrus venosus intonsus | Wild pea | Fabaceae | |
| Lechea stricta | Bushy pinweed | Cistaceae | |
| Lechea tenuifolia | Slender leaved pinweed | Cistaceae | |
| Leonurus cardiaca | Motherwort | Lamiaceae | |
| Lepidium densiflorum | Small pepper grass | Brassicaceae | |
| Lespedeza capitata | Round-headed bush clover | Fabaceae | |
| Liatris aspera | Rough blazing star | Asteraceae | |
| Liatris cylindracea | Cylindrical blazing star | Asteraceae | |
| Liatris pycnostachya | Prairie blazing star | Asteraceae | |
| Liatris spicata | Marsh blazing star | Asteraceae | |
| Lilium michiganense | Turk's cap lily | Liliaceae | |
| Lilium philadelphicum andinum | Prairie lily | Liliaceae | |
| Linaria vulgaris | Butter and eggs | Scrophulariaceae | |
| Liparis loeselii | Green tway-blade | Orchidaceae | |
| Liparis loeselii | Loesel's tway blade | Orchidaceae | |
| Lithospermum canescens | Hoary puccoon | Boraginaceae | |
| Lithspermum croceum | Hairy puccoon | Boraginaceae | |
| Lithspermum incisum | Fringed puccoon | Boraginaceae | |
| Lobelia cardinalis | Cardinal flower | Lobeliaceae | |
| Lobelia kalmii | Bog lobelia | Lobeliaceae | |
| Lobelia siphilitica | Great blue lobelia | Lobeliaceae | |
| Lobelia spicata | Pale-spike lobelia | Lobeliaceae | |
| Lonicera tartarica | Tartarian honey suckle | Caprifoliaceae | |
| Lupinus perennis occidentalis | Wild lupine | Fabaceae | |
| Lychnis alba | White campion | Caryophyllaceae | |
| Lycopus americanus | Common water horehound | Lamiaceae | |
| Lycopus uniflorus | Northern bugle weed | Lamiaceae | |
| Lysimachia quadriflora | Narrow-leaved loosestrife | Primulaceae | |
| Lysimachia thyrisiflora | Tufted loosestrife | Primulaceae | |
| Lythrum alatum | Winged loosestrife | Lythraceae | |
| Lythrum salicaria | Purple loosestrife | Lythraceae | non-native |
| Matricaria matricarioides | Pineapple weed | Asteraceae | |
| Medicago lupulina | Black medick | Fabaceae | |
| Medicago sativa | Alfalfa | Fabaceae | |
| Medicago sativa | Lucerne | Fabaceae | |
| Melilotus officinalis | Yellow sweet clover | Fabaceae | |
| Melitotus alba | White sweet clover | Fabaceae | |
| Mentha arvensis villosa | Wild mint | Lamiaceae | |
| Mimulus ringens | Monkey flower | Scrophulariaceae | |
| Mirabilis nyctaginea | Four o'clock | Nyctaginaceae | |
| Monarda fistulosa | Wild bergamot | Lamiaceae | |
| Monarda punctata villicaulis | Dotted monarda | Lamiaceae | |
| Monarda punctata villicaulis | Horsemint | Lamiaceae | |
| Morus alba | White mulberry | Moraceae | |
| Muhlenbergia mexicana | Leafy satin grass | Poaceae | |
| Myriophyllym sp. | Water milfoil | Haloragidaceae | |
| Oenothera biennis | Common evening primrose | Onagraceae | |
| Oenthera rhombipetalla | Sand primrose | Onagraceae | |
| Onoclea sensibilis | Sensitive fern | Polypodiaceae | |
| Orobanche uniflora | One flowered cancer root/broomrape | Orobanchaceae | |
| Osmunda regalis | Royal fern | Osmundaceae | |
| Oxalis stricta | Common wood sorrel | Oxalidaceae | |
| Oxalis violacea | Violet wood sorrel | Oxalidaceae | |
| Oxypolis regidior | Cow bane | Apiaceae | |
| Oxypolis regidior | Hog fennel | Apiaceae | |
| Oxypolis regidior | Water dropwort | Apiaceae | |
| Panicum depauperatum | Starved panic grass | Poaceae | |
| Panicum flexile | Wiry panic grass | Poaceae | |
| Panicum lanuginosum linderheimeri | Panic grass | Poaceae | |
| Panicum leibergii | Prairie panic grass | Poaceae | |
| Panicum meridionale | Mat panic grass | Poaceae | |
| Panicum oligosanthes scribnerianum | Scribner's panic grass | Poaceae | |
| Panicum praecocius | Early panic grass | Poaceae | |
| Panicum virgatum | Switchgrass | Poaceae | |
| Parnassia glauca | Grass of parnassus | Saxifragaceae | |
| Pedicularis canadensis | Lousewort | Scrophulariaceae | |
| Pedicularis canadensis | Wood betony | Scrophulariaceae | |
| Pedicularis lanceolata | Lousewort | Scrophulariaceae | |
| Pedicularis lanceolata | Swamp Betony | Scrophulariaceae | |
| Penstemon bradburii | Large flowered beard tongue | Scrophulariaceae | |
| Penstemon calycosus | Beardtongue | Scrophulariaceae | |
| Penstemon grandiflorus | Beardtongue=P. bradburii | Scrophulariaceae | |
| Penstemon hirsutus | Hairy beard tongue | Scrophulariaceae | |
| Penstemon pallidus | Pale beard tongue | Scrophulariaceae | |
| Penthorum sedoides | Ditch stonecrop | Saxifragaceae | |
| Petalostemum candidum | White prairie clover | Fabaceae | |
| Petalostemum purpureum | Purple prairie clover | Fabaceae | |
| Phalaris arundinacaea | Reed canary grass | Poaceae | |
| Phleum pratense | Timothy | Poaceae | |
| Phlox glaberrima interior | Marsh phlox | Polemoniaceae | endangered |
| Phlox pilosa | Prairie phlox | Polemoniaceae | |
| Physalis heterophylla | Clammy ground cherry | Solanaceae | |
| Physalis virginiana | Lance-leaved ground cherry | Solanaceae | |
| Physostegia virginiana | Dragonhead | Lamiaceae | |
| Plantago major | Common plantain | Plantaginaceae | |
| Platanthera hyperborea | Northern Green Orchid | Ochidaceae | |
| Platanthera lacera | Ragged fringed orchid | Orchidaceae | |
| Platanthera leucophaea | White fringed prairie | Orchidaceae | endangered |
| Poa compressa | Canada bluegrass | Poaceae | |
| Poa pratensis | Kentucky bluegrass | Poaceae | |
| Podophyllum peltatum | May apple | Berberidaceae | |
| Polygala incarnata | Pink milkwort | Polygalaceae | endangered |
| Polygala polygama | Purple milkwort | Polygalaceae | |
| Polygala sanguinea | Field milkwort | Polygalaceae | |
| Polygala senega | Milkwort | Polygalaceae | |
| Polygala senega | Seneca milkwort | Polygalaceae | |
| Polygala verticillata isocycla | Whorled milkwort | Polygalaceae | |
| Polygonatum biflorum | Solomon's seal | Lilaceae | |
| Polygonatum canaliculatum | Great Solomon's seal | Lilaceae | |
| Polygonum amphibium stipuleceum | Water smartweed | Polygonaceae | |
| Polygonum convolvus | Black bindweed | Polygonaceae | |
| Polygonum pensylvanicum | Dinkweed | Polygonaceae | |
| Polygonum pensylvanicum | Pennsylvania knotweed | Polygonaceae | |
| Populus deltoides | Cottonwood | Salicaceae | |
| Potentilla anserina | Silverweed | Rosaceae | |
| Potentilla argentea | Silvery cinquefoil | Rosaceae | |
| Potentilla arguta | Prairie cinquefoil | Rosaceae | |
| Potentilla arguta | Tall cinquefoil | Rosaceae | |
| Potentilla fruticosa | Shrubby cinquefoil | Rosaceae | |
| Potentilla heterophylla | Cinquefoil | Rosaceae | |
| Potentilla norvegica | Rough cinquefoil | Roseceae | |
| Potentilla simplex | Common cinquefoil | Rosaceae | |
| Prananthes recemosa | Rattlesnake root | Asteraceae | |
| Prenanthes racemosa | Glaveous white lettuce | Asteraceae | |
| Prunella vulgaris lanceolata | Heal all | Lamiaceae | |
| Prunella vulgaris lanceolata | Self heal | Lamiaceae | |
| Prunus serotina | Wild black cherry | Rosaceae | |
| Pteridium aquilinum | Bracken fern | Polypodiaceae | |
| Pycnanthemum virginianum | Common mountain mint | Lamiaceae | |
| Quercus alba | White oak | Fagaceae | |
| Quercus macrocarpa | Bur oak | Fagaceae | |
| Quercus velutina | Black oak | Fagaceae | |
| Ranunculus fascicularis | Early buttercup | Ranunculaceae | |
| Ranunculus flabellaris | Yellow water-crowfoot | Ranunculaceae | |
| Ranunculus scleratus | Cursed crowfoot | Ranunculaceae | |
| Ratibida pinnata | Prairie coneflower | Asteraceae | |
| Rhus glabra | Smooth sumac | Anacardiaceae | |
| Rhus radicans | Poison ivy | Acacardiaceae | |
| Rhyncospora capillacea | Hairy beak rush | Cyperaceae | |
| Rhyncospora capitellata | Clustered beak rush | Cyperaceae | |
| Rorippa islandica fernaldiana | Yellow cress | Brassicaceae | |
| Rosa carolina | Pasture rose | Rosaceae | |
| Rosa carolina | Wild rose | Rosaceae | |
| Rubus idaeus strigosus | Red raspberry | Rosaceae | |
| Rudbeckia hirta | Black-eyed Susan | Asteraceae | |
| Rudbeckia hirta | Coneflower | Asteraceae | |
| Rudbeckia laciniata | Wild goldenglow | Asteraceae | |
| Rumex acetosella | Field sorrel | Polygonaceae | |
| Rumex acetosella | Sheep sorrel | Polygonaceae | |
| Rumex orbiculatus | Great water dock | Polygonaceae | |
| Sagittaria latifolia | Common arrowhead | Alismataceae | |
| Salix discolor | Large pussy willow | Salicaceae | |
| Salix humilis | Prairie willow | Salicaceae | |
| Salix interior | Sandbar willow | Salicaceae | |
| Salsola kali | Russian thistle | Chenopodiaceae | |
| Sambucus canadensis | Elderberry | Caprifoliaceae | |
| Sanicula marilandica | Black snakeroot | Apiaceae | |
| Sanicula marilandica | Sanicle | Apiaceae | |
| Saponaria officinalis | Bouncing bet | Caryophyllaceae | |
| Satureja arkansana | Low calamint | Lamiaceae | |
| Satureja arkansana | Savory | Lamiaceae | |
| Saxifraga pensylvanica | Swamp saxifrage | Saxifragaceae | |
| Scirpus americanus | Chairmaker's bulrush | Cyperaceae | |
| Scirpus atrovirens | Dark green rush | Cyperaceae | |
| Scirpus lineatus | Red bulrush | Cyperaceae | |
| Scirpus validus creber | Hardstem bulrush | Cyperaceae | |
| Scleria triglomerata | Tall nut rush | Cyperaceae | |
| Scleria verticillata | Low nut marsh | Cyperaceae | |
| Scutellaria epilobifolia | Marsh skullcap | Lamiaceae | |
| Scutellaria lateriflora | Mad-dog skullcap | Lamiaceae | |
| Scutellaria parvula leonardi | Small skullcap | Lamiaceae | |
| Senecia pauperculus | Balsam ragwort | Asteraceae | |
| Senecia pauperculus | Groundsel | Asteraceae | |
| Silene antirrhina | Sleepy catchfly | Caryophyllaceae | |
| Silene stellata | Starry campion | Caryophyllaceae | |
| Silphium integrifolium | Rosinweed | Asteraceae | |
| Silphium laciniatum | Compass plant | Asteraceae | |
| Silphium terebinthinaceum | Prairie dock | Asteraceae | |
| Sisymbrium altissimum | Thumble mustard | Brassicaceae | |
| Sisyrinchium albidum | Common blue-eyed grass | Iridaceae | |
| Sisyrinchium campestre | Prairie blue-eyed grass | Iridaceae | |
| Smilacina stellata | Star-flowered false Solomon's seal | Liliaceae | |
| Smilax herbacea | Carrion flower | Liliaceae | |
| Solanum dulcamara | Nightshade | Solanaceae | |
| Solidago altissima | Goldenrod | Asteraceae | |
| Solidago canadensis | Tall goldenrod | Asteraceae | |
| Solidago gigantea leiophylla | Late goldenrod | Asteraceae | |
| Solidago graminifolia | Grass-leaved goldenrod | Asteraceae | |
| Solidago missouriensis | Missouri goldenrod | Asteraceae | |
| Solidago nemoralis | Goldenrod | Asteraceae | |
| Solidago ohioensis | Ohio goldenrod | Asteraceae | special concern |
| Solidago riddellii | Riddell's goldenrod | Asteraceae | |
| Solidago rigida | Stiff goldenrod | Asteraceae | |
| Solidago ugliginosa | Bog goldenrod | Asteraceae | |
| Sorghastrum nutans | Indian grass | Poaceae | |
| Sparganium eurycarpum | Common bur reed | Sparganiaceae | |
| Spartina pectinata | Freshwater cordgrass | Poaceae | |
| Sphenopholis intermedia | Slender wedge grass | Poaceae | |
| Spiraea alba | Meadow sweet | Rosaceae | |
| Spiraea alba | Spiraea | Rosaceae | |
| Spiranthes cernua ochroleuca | Nodding ladies' tresses | Orchidaceae | |
| Sporobolus cryptandrus | Sand dropseed | Poaceae | |
| Sporobolus heterolepis | Northern dropseed | Poaceae | |
| Sporobolus heterolepsis | Prairie dropseed | Poaceae | |
| Sporobolus vaginifloris | Sheathed rush grass | Poaceae | |
| Stachys palustris | Woundwort | Lamiaceae | |
| Stipa spartea | Porcupine grass | Poaceae | |
| Taenidia integerrima | Yellow pimpernel | Apiaceae | |
| Tanacetum vulgare | Tansy | Poaceae | |
| Taraxacum officinale | Dandelion | Asteraceae | non-native |
| Teucrium canadense | American germander | Lamiaceae | |
| Teucrium canadense | Wood sage | Lamiaceae | |
| Thalictrum dasycarpus | Purple meadow rue | Ranunculaceae | |
| Thalictrum revoltum | Purple or waxy meadow rue | Ranunculaceae | |
| Thelypteris palustris | Marsh fern | Polypodiaceae | |
| Tofieldia glutinosa | False asphodel | Liliaceae | threatened |
| Tradescantia ohiensis | Common spiderwort | Commelinaceae | |
| Tragopogon major | Goat's beard | Asteraceae | |
| Trifolium hybridum | Alsike clover | Fabacae | |
| Trifolium pratense | Red clover | Fabaceae | |
| Trifolium repens | White clover | Fabaceae | |
| Triglochin maritima | Common bog arrow grass | Juncaginaceae | |
| Trillium grandiflorum | Large-flowered trillium | Liliaceae | |
| Trillium recurvatum | Prairie trillium | Liliaceae | |
| Triostem aurantiacum | Early horse gentian | Caprifoliaceae | |
| Triosteum aurantiacum | Wild coffee | Caprifoliaceae | |
| Typha augustifolia | Narrow leaved cattail | Typhaceae | |
| Typha latifolia | Common cattail | Typhaceae | |
| Urtica dioica | Stinging nettle | Urticaceae | |
| Utricularia cornuta | Bladderwort | Lentibulariaceae | |
| Valeriana ciliata (edulis) | Valerian | Valerianaceae | |
| Verbascum thaspus | Common mullein | Scrophulariaceae | non-native |
| Verbena bracteata | Creeping vervain | Verbenaceae | |
| Verbena hastata | Blue vervain | Verbenaceae | |
| Veronia fasciculata | Common ironweed | Asteraceae | |
| Veronicastrum virginicum | Culver's root | Scrophulariaceae | |
| Vicia americana | American vetch | Fabacae | |
| Vicia villosa | Hairy vetch | Fabaceae | |
| Viola cucullata | Blue marsh violet | Violaceae | |
| Viola cucullata | Hooded violet | Violaceae | |
| Viola pedata lineariloba | Birdfoot violet | Violaceae | |
| Viola pedatifida | Prairie violet | Violaceae | |
| Viola sagittata | Arrow-leaved violet | Violaceae | |
| Viola sp. | Violet | Violaceae | |
| Vitis riparia | Wild grape | Vitaceae | |
| Xanthium canadense | Cocklebur | Asteraceae | |
| Zizia aurea | Golden Alexander | Apiaceae |
Additions are currently being made to this list, November 2001.