Listing of the known Konza Prairie vascular plants alphabetized by common name. This list is a recapilulation of the 576 species from: Towne, E.G. 2002. Vascular plants of Konza Prairie Biological Station: an annotated checklist of species in a Kansas tallgrass prairie. Sida 20:269-294. Common Name Genus species Family Adder's-tongue Ophioglossum engelmannii Ophioglossaceae Agalinis, rough Agalinis aspera Scrophulariaceae Agrimonia, downy Agrimonia pubescens Rosaceae Alexanders, golden Zizia aurea Apiaceae Alfalfa Medicago sativa Fabaceae Anemone, Carolina Anemone caroliniana Ranunculaceae Anemone, tall Anemone virginiana Ranunculaceae Arrowhead, common Sagittaria latifolia Alismataceae Ash, green Fraxinus pennsylvanica Oleaceae Asparagus Asparagus officinalis Liliaceae Aster, aromatic Symphyotrichum oblongifolium Asteraceae Aster, azure Symphyotrichum oolentangiense Asteraceae Aster, Drummond's Symphyotrichum drummondii Asteraceae Aster, hairy Symphyotrichum pilosum Asteraceae Aster, heath Symphyotrichum ericoides Asteraceae Aster, panicled Symphyotrichum lanceolatum Asteraceae Aster, saltmarsh Symphyotrichum subulatum Asteraceae Aster, silky Symphyotrichum sericeum Asteraceae Aster, smooth Symphyotrichum laeve Asteraceae Avens, white Geum canadense Rosaceae Barley, fox-tail Hordeum jubatum Poaceae Barley, little Hordeum pusillum Poaceae Barnyard grass Echinochloa muricata Poaceae Basswood Tilia americana Tiliaceae Beakgrain, American Diarrhena obovata Poaceae Beardtongue, cobaea Penstemon cobaea Scrophulariaceae Beardtongue, large Penstemon grandiflorus Scrophulariaceae Beardtongue, shell-leaf Penstemon grandiflorus Scrophulariaceae Beardtongue, tube Penstemon tubiflorus Scrophulariaceae Bedstraw, catch-weed Galium aparine Rubiaceae Bedstraw, sweet-scented Galium triflorum Rubiaceae Bedstraw, woods Galium circaezans Rubiaceae Bee-balm, mint-leaf Monarda fistulosa Lamiaceae Beggar-ticks, coreopsis Bidens aristosa Asteraceae Beggar-ticks, devil's Bidens frondosa Asteraceae Beggar-ticks, nodding Bidens cernua Asteraceae Bellflower, American Campanulastrum americanum Campanulaceae Bent grass, winter Agrostis hyemalis Poaceae Bergamot, wild Monarda fistulosa Lamiaceae Bermuda grass Cynodon dactylon Poaceae Bindweed, field Convolvulus arvensis Convolvulaceae Bindweed, hedge Calystegia macounii Convolvulaceae Bittersweet, American Celastrus scandens Celastraceae Blackberry, high-bush Rubus ostryifolius Rosaceae Black-eyed susan Rudbeckia hirta Asteraceae Blue-eyed-grass, prairie Sisyrinchium campestre Iridaceae Blue grass, Canadian Poa compressa Poaceae Blue grass, Chapman's Poa chapmaniana Poaceae Blue grass, Kentucky Poa pratensis Poaceae Blue grass, plains Poa arida Poaceae Blue-mustard Chorispora tenella Brassicaceae Bluestem, big Andropogon gerardii Poaceae Bluestem, caucasian Bothrichloa bladhii Poaceae Bluestem, little Schizachyrium scoparium Poaceae Bluestem, silver Bothrichloa laguroides Poaceae Bluestem, Turkestan Bothrichloa ischaemum Poaceae Bluets, narrow-leaf Hedyotis nigricans Rubiaceae Bluets, small Houstonia pusilla Rubiaceae Boxelder Acer negundo Aceraceae Bristle grass, green Setaria viridis Poaceae Bristle grass, yellow Setaria pumila Poaceae Brome, downy Bromus tectorum Poaceae Brome, Japanese Bromus japonicus Poaceae Brome, smooth Bromus inermis Poaceae Brome, woodland Bromus pubescens Poaceae Broomrape, one-flower Orobanche uniflora Orobanchaceae Broomweed, annual Amphiachyris dracunculoides Asteraceae Buckbrush Symphoricarpos orbiculatus Caprifoliaceae Buckeye, Ohio Aesculus glabra Hippocastanaceae Buffalo gourd Cucurbita foetidissima Cucurbitaceae Buffalo grass Buchloe dactyloides Poaceae Bugleweed, American Lycopus americanus Lamiaceae Bulrush, drooping Scirpus pendulus Cyperaceae Bulrush, green Scirpus atrovirens Cyperaceae Bulrush, river Bolboschoenus fluviatilis Cyperaceae Bulrush, soft-stem Scirpus tabernaemontani Cyperaceae Bundle-flower, Illinois Desmanthus illinoensis Fabaceae Bur-cucumber Sicyos angulatus Cucurbitaceae Burdock Arctium minus Asteraceae Burhead Echinodorus berteroi Alismataceae Burnweed, American Erechtites hieraciifolia Asteraceae Bush-clover, tall Lespedeza stuevei Fabaceae Buttercup, little-leaf Ranunculus abortivus Ranunculaceae Cactus, nipple Escobaria missouriensis Cactaceae Cardinal-flower, blue Lobelia siphilitica Campanulaceae Cardinal-flower, red Lobelia cardinalis Campanulaceae Carpetweed Mollugo verticillata Molluginaceae Catchfly, sleepy Silene antirrhina Caryophyllaceae Catnip Nepeta cataria Lamiaceae Cat-tail, broad-leaf Typha latifolia Typhaceae Cat-tail, narrow-leaf Typha angustifolia Typhaceae Ceanothus, inland Ceanothus herbaceus Rhamnaceae Chervil, erect Chaerophyllum tainturieri Apiaceae Chervil, spreading Chaerophyllum procumbens Apiaceae Chickweed, lesser Stellaria pallida Caryophyllaceae Chickweed, jagged Holosteum umbellatum Caryophyllaceae Chickweed, mouse-ear Cerastium brachypodum Caryophyllaceae Choke cherry Prunus virginiana Rosaceae Cinquefoil, sulphur Potentilla recta Rosaceae Cinquefoil, tall Potentilla arguta Rosaceae Clammyweed Polanisia dodecandra Capparaceae Clearweed Pilea pumila Urticaceae Clematis, Pitcher's Clematis pitcheri Ranunculaceae Cliff brake, smooth Pellaea glabella Pteridaceae Cliff fern, blunt-lobed Woodsia obtusa Dryopteridaceae Climbing-milkweed Cynanchum laeve Asclepiadaceae Cloak fern, false Argyrochosma dealbata Pteridaceae Clover, red Trifolium pratense Fabaceae Clover, white Trifolium repens Fabaceae Cocklebur Xanthium strumarium Asteraceae Coffeetree, Kentucky Gymnocladus dioicus Fabaceae Compassplant Silphium laciniatum Asteraceae Copperleaf, hop-hornbeam Acalypha ostryaefolia Euphorbiaceae Copperleaf, rhombic Acalypha rhomboidea Euphorbiaceae Copperleaf, Virginia Acalypha virginica Euphorbiaceae Cord grass, prairie Spartina pectinata Poaceae Cottonwood Populus deltoides Salicaceae Crab grass, hairy Digitaria sanguinalis Poaceae Crane's-bill, Carolina Geranium carolinianum Geraniaceae Croton, one-seed Croton monanthogynus Euphorbiaceae Croton, woolly Croton capitatus Euphorbiaceae Crown-vetch Coronilla varia Fabaceae Cudweed, fragrant Pseudognaphalium obtusifolium Asteraceae Cup grass, prairie Eriochloa contracta Poaceae Cut grass, rice Leersia oryzoides Poaceae Dame's rocket Hesperis matronalis Brassicaceae Dandelion Taraxacum officinale Asteraceae Dayflower, erect Commelina erecta Commelinaceae Death-camas, Nuttall's Zigadenus nuttallii Liliaceae Deptford pink Dianthus armeria Caryophyllaceae Dichanthelium, Scribner's Dichanthelium oligosanthes Poaceae Dichanthelium, woolly Dichanthelium acuminatum Poaceae Dock, curly Rumex crispus Polygalaceae Dock, pale Rumex altissimus Polygalaceae Dodder, cluster Cuscuta glomerata Cuscutaceae Dodder, showy Cuscuta indecora Cuscutaceae Dogbane, hemp Apocynum cannabinum Apocynaceae Dogweed, prairie Dyssodia papposa Asteraceae Dogwood, pale Cornus amomum Cornaceae Dogwood, roughleaf Cornus drummondii Cornaceae Draba, wedge-leaf Draba cuneifolia Brassicaceae Dragonroot Arisaema dracontium Araceae Dropseed, poverty Sporobolus vaginiflorus Poaceae Dropseed, prairie Sporobolus heterolepis Poaceae Dropseed, puff-sheath Sporobolus neglectus Poaceae Dropseed, sand Sporobolus cryptandrus Poaceae Dropseed, tall Sporobolus compositus Poaceae Duckweed, lesser Lemna minor Lemnaceae Dutchman's-breeches Dicentra cucullaria Fumariaceae Dwarf-dandelion Krigia cespitosa Asteraceae Echinacea, black-sampson Echinacea angustifolia Asteraceae Elderberry, American Sambucus nigra Caprifoliaceae Elm, American Ulmus americana Ulmaceae Elm, red Ulmus rubra Ulmaceae Elm, Siberian Ulmus pumila Ulmaceae Elm, slippery Ulmus rubra Ulmaceae Euthamia, sticky Euthamia gymnospermoides Asteraceae Evening-primose, common Oenothera biennis Onagraceae Evening-primose, Missouri Oenothera macrocarpa Onagraceae Evening-primrose, cut-leaf Oenothera laciniata Onagraceae Evening-primrose, serrate-leaf Calylophus serrulatus Onagraceae Evening-primrose, showy Oenothera speciosa Onagraceae Evolvulus, Nuttall's Evolvulus nuttallianus Convolvulaceae Eyebane Chamaesyce nutans Euphorbiaceae False-boneset Brickellia eupatorioides Asteraceae False buckwheat Polygonum scandens Polygalaceae False-dandelion, wavy-leaf Nothocalais cuspidata Asteraceae False-flax, little-pod Camelina microcarpa Brassicaceae False-mallow, rough Malvastrum hispidum Malvaceae False-penny-royal, rough Hedeoma hispidum Lamiaceae Fawn-lily, white Erythronium albidum Liliaceae Fescue, meadow Lolium pratense Poaceae Fescue, nodding Festuca subverticillata Poaceae Fescue, six-weeks Vulpia octoflora Poaceae Fescue, tall Lolium arundinaceum Poaceae Fetid-marigold Dyssodia papposa Asteraceae Figwort, Maryland Scrophularia marilandica Scrophulariaceae Fireweed Bassia scoparia Chenopodiaceae Flat-sedge, awned Cyperus squarrosus Cyperaceae Flat-sedge, brook Cyperus bipartitus Cyperaceae Flat-sedge, intermediate Cyperus x mesochorus Cyperaceae Flat-sedge, plains Cyperus lupulinus Cyperaceae Flat-sedge, rusty Cyperus odoratus Cyperaceae Flat-sedge, straw Cyperus strigosus Cyperaceae Flat-sedge, tape-leaf Cyperus acuminatus Cyperaceae Flax, grooved Linum sulcatum Linaceae Fleabane, annual Erigeron annuus Asteraceae Fleabane, daisy Erigeron strigosus Asteraceae Fleabane, Philadelphia Erigeron philadelphicus Asteraceae Flower-of-an-hour Hibiscus trionum Malvaceae Fluxweed Isanthus brachiatus Lamiaceae Fogfruit, northern Phyla lanceolata Verbenaceae Forget-me-not, Virginia Myosotis verna Boraginaceae Four-o'clock, narrow-leaf Mirabilis linearis Nyctaginaceae Four-o'clock, white Mirabilis albida Nyctaginaceae Four-o'clock, wild Mirabilis nyctaginea Nyctaginaceae Foxtail, Carolina Alopecurus carolinianus Poaceae Fumewort, slender Corydalis micrantha Fumariaceae Gamma grass, eastern Tripsacum dactyloides Poaceae Garlic-mustard Alliaria petiolata Brassicaceae Gaura, small-flower Gaura mollis Onagracene Gaura, velvet Gaura mollis Onagracene Gayfeather, button Liatris aspera Asteraceae Gayfeather, eastern dotted Liatris mucronata Asteraceae Gayfeather, western dotted Liatris punctata Asteraceae Gentian, downy Gentiana puberulenta Gentianaceae Germander, American Teucrium canadense Lamiaceae Giant-hyssop, catnip Agastache nepetoides Lamiaceae Goat grass Aegilops cylindrica Poaceae Goat's-beard Tragopogon dubius Asteraceae Golden-aster Heterotheca canescens Asteraceae Goldenrod, ashy Solidago mollis Asteraceae Goldenrod, Canadian Solidago canadensis Asteraceae Goldenrod, downy Solidago petiolaris Asteraceae Goldenrod, late Solidago gigantea Asteraceae Goldenrod, Missouri Solidago missouriensis Asteraceae Goldenrod, showy-wand Solidago speciosa Asteraceae Goldenrod, stiff Oligoneuron rigidum Asteraceae Goldenrod, tall Solidago canadensis Asteraceae Gooseberry, Missouri Ribes missouriense Grossulariaceae Goosefoot, maple-leaf Chenopodium simplex Chenopodiaceae Goosefoot, pale Chenopodium pallescens Chenopodiaceae Goosefoot, pit-seed Chenopodium berlandieri Chenopodiaceae Goosefoot, Standley's Chenopodium standleyanum Chenopodiaceae Goose grass Eleusine indica Poaceae Grama, blue Bouteloua gracilis Poaceae Grama, hairy Bouteloua hirsuta Poaceae Grama, side-oats Bouteloua curtipendula Poaceae Grape, riverbank Vitis riparia Vitaceae Greenbrier, bristly Smilax tamnoides Smilacaceae Greenbrier, carrion-flower Smilax herbacea Smilacaceae Green-violet, nodding Hybanthus verticillatus Violaceae Gromwell, corn Buglossoides arvensis Boraginaceae Gromwell, hoary Lithospermum canescens Boraginaceae Gromwell, narrow-leaf Lithospermum incisum Boraginaceae Ground-cherry, clammy Physalis heterophylla Solanaceae Ground-cherry, downy Physalis pubescens Solanaceae Ground-cherry, heart-leaf Physalis hederifolia Solanaceae Ground-cherry, prairie Physalis pumila Solanaceae Ground-cherry, Virginia Physalis virginiana Solanaceae Groundsel, prairie Packera plattensis Asteraceae Gumweed, curly-cup Grindelia squarrosa Asteraceae Hackberry Celtis occidentalis Ulmaceae Hairy-foxglove, fine-leaf Agalinis densiflora Scrophulariaceae Hawkweed, long-beard Hieracium longipilum Asteraceae Hawthorn, downy Crategus mollis Rosaceae Hedge-apple Maclura pomifera Moraceae Hedge-parsley Torilis arvensis Apiaceae Heliopsis, rough Heliopsis helianthoides Asteraceae Hemp Cannabis sativa Cannabaceae Hen-bit Lamium amplexicaule Lamiaceae Hickory, bitter-nut Carya cordiformis Juglandaceae Hoary cress Cardaria draba Brassicaceae Hog-peanut Amphicarpaea bracteata Fabaceae Honey-locust Gleditsia triacanthos Fabaceae Honeysuckle, amur Lonicera maackii Caprifoliaceae Hop-hornbeam Ostrya virginiana Betulaceae Horehound, common Marrubium vulgare Lamiaceae Horse-gentian Triosteum perfoliatum Caprifoliaceae Horse-nettle, Carolina Solanum carolinense Solanaceae Horseweed, Canada Conyza canadensis Asteraceae Horseweed, spreading Conyza ramosissima Asteraceae Hound's-tongue Cynoglossum officinale Boraginaceae Hymenopappus, white-bract Hymenopappus scabiosaeus Asteraceae Indian grass Sorghastrum nutans Poaceae Indian-plantain, tuberous Arnoglossum plantagineum Asteraceae Indigobush amorpha Amorpha fruticosa Fabaceae Ironweed, western Vernonia baldwinii Asteraceae Jerusalem artichoke Helianthus tuberosus Asteraceae Jimsonweed Datura stramonium Solanaceae Joe-pye-weed, tall Eupatorium altissimum Asteraceae Johnny-jump-up Viola bicolor Violaceae Johnson grass Sorghum halepense Poaceae June grass, prairie Koeleria macrantha Poaceae Knotweed, bushy Polygonum ramosissimum Polygalaceae Knotweed, prostrate Polygonum aviculare Polygalaceae Knotweed, slim Polygonum tenue Polygalaceae Kochia Bassia scoparia Chenopodiaceae Lace grass Eragrostis capillaris Poaceae Ladies'-tresses, nodding Spiranthes cernua Orchidaceae Ladies'-tresses, spring Spiranthes vernalis Orchidaceae Lamb's-quarters Chenopodium album Chenopodiaceae Larkspur, plains Delphinium carolinianum Ranunculaceae Leadplant Amorpha canescens Fabaceae Lespedeza, Korean Kummerowia stipulacea Fabaceae Lespedeza, prairie Lespedeza violacea Fabaceae Lespedeza, round-head Lespedeza capitata Fabaceae Lespedeza, sericea Lespedeza cuneata Fabaceae Lettuce, Canadian Lactuca canadensis Asteraceae Lettuce, Louisiana Lactuca ludoviciana Asteraceae Lettuce, prickly Lactuca serriola Asteraceae Lettuce, willow-leaf Lactuca saligna Asteraceae Licorice, American Glycyrrhiza lepidota Fabaceae Locust, black Robinia pseudoacacia Fabaceae Lomatium, carrot-leaf Lomatium foeniculaceum Apiaceae Loosestrife, fringed Lysimachia ciliata Primulaceae Loosestrife, winged Lythrum alatum Lythraceae Lopseed Phryma leptostachya Verbenaceae Love grass, Carolina Eragrostis pectinacea Poaceae Love grass, purple Eragrostis spectabilis Poaceae Mallow, common Malva neglecta Malvaceae Manna grass, fowl Glyceria striata Poaceae Marbleseed, western Onosmodium molle Boraginaceae Marijuana Cannabis sativa Cannabaceae Mat-spurge, Missouri Chamaesyce missurica Euphorbiaceae Mat-spurge, prostrate Chamaesyce prostrata Euphorbiaceae Mat-spurge, ridge-seed Chamaesyce glyptosperma Euphorbiaceae Mat-spurge, serpent Chamaesyce serpens Euphorbiaceae Mat-spurge, slim-seed Chamaesyce stictospora Euphorbiaceae Mat-spurge, spotted Chamaesyce maculata Euphorbiaceae Meadow-rue, purple Thalictrum dasycarpum Ranunculaceae Medic, black Medicago lupulina Fabaceae Milk-vetch, Canadian Astragalus canadensis Fabaceae Milk-vetch, ground-plum Astragalus crassicarpus Fabaceae Milk-vetch, lotus Astragalus lotiflorus Fabaceae Milk-vetch, Missouri Astragalus missouriensis Fabaceae Milk-vetch, Platte River Astragalus plattensis Fabaceae Milkweed, butterfly Asclepias tuberosa Asclepiadaceae Milkweed, common Asclepias syriaca Asclepiadaceae Milkweed, green Asclepias viridiflora Asclepiadaceae Milkweed, narrow-leaf Asclepias stenophylla Asclepiadaceae Milkweed, showy Asclepias speciosa Asclepiadaceae Milkweed, smooth Asclepias sullivantii Asclepiadaceae Milkweed, spider Asclepias viridis Asclepiadaceae Milkweed, whorled Asclepias verticillata Asclepiadaceae Milkweed, woolly Asclepias lanuginosa Asclepiadaceae Milkwort, whorled Polygala verticillata Polygalaceae Mint, field Mentha arvensis Lamiaceae Monkey-flower, yellow Mimulus glabratus Scrophulariaceae Moonseed Menispermum canadense Menispermaceae Morning-glory, big-root Ipomoea pandurata Convolvulaceae Morning-glory, ivy-leaf Ipomoea hederacea Convolvulaceae Morning-glory, white Ipomoea lacunosa Convolvulaceae Mousetail, tiny Myosurus minimus Ranunculaceae Muhly, green Muhlenbergia racemosa Poaceae Muhly, leafy Muhlenbergia mexicana Poaceae Muhly, marsh Muhlenbergia racemosa Poaceae Muhly, nodding Muhlenbergia bushii Poaceae Muhly, plains Muhlenbergia cuspidata Poaceae Muhly, wire-stem Muhlenbergia frondosa Poaceae Mulberry, white Morus alba Moraceae Mullein, flannel Verbascum thapsus Scrophulariaceae Mullein, moth Verbascum blattaria Scrophulariaceae Musk-thistle Carduus nutans Asteraceae Naiad, common Najas guadalupensis Najadaceae Nettle, stinging Urtica dioica Urticaceae New Jersey tea Ceanothus herbaceus Rhamnaceae Nightshade, black Solanum ptychanthum Solanaceae Nightshade, buffalo-bur Solanum rostratum Solanaceae Nimblewill Muhlenbergia schreberi Poaceae Noseburn, catnip Tragia ramosa Euphorbiaceae Noseburn, nettle-leaf Tragia betonicifolia Euphorbiaceae Nut-sedge, yellow Cyperus esculentus Cyperaceae Oak, bur Quercus macrocarpa Fagaceae Oak, chinquapin Quercus muehlenbergii Fagaceae Old plainsman Hymenopappus scabiosaeus Asteraceae Onion, pink Allium stellatum Liliaceae Onion, wild Allium canadense Liliaceae Orchard grass Dactylis glomerata Poaceae Osage-orange Maclura pomifera Moraceae Paleseed Leucospora multifida Scrophulariaceae Panicum, fall Panicum dichotomiflorum Poaceae Pansy, field Viola bicolor Violaceae Partridgepea, showy Chamaecrista fasciculata Fabaceae Paspalum, hairy-seed Paspalum pubiflorum Poaceae Paspalum, sand Paspalum setaceum Poaceae Pawpaw Asimina triloba Annonaceae Pellitory, Pennsylvania Parietaria pensylvanica Urticaceae Pennycress, field Thlaspi arvense Brassicaceae Pennycress, perfoliate Microthlaspi perfoliatum Brassicaceae Pepperweed, branched Lepidium oblongum Brassicaceae Pepperweed, common Lepidium densiflorum Brassicaceae Pepperweed, Virginia Lepidium virginicum Brassicaceae Phlox, blue Phlox divaricata Polemoniaceae Pigweed, Palmer's Amaranthus palmeri Amaranthaceae Pigweed, prostrate Amaranthus blitoides Amaranthaceae Pigweed, rough Amaranthus retroflexus Amaranthaceae Plantain, black-seed Plantago rugelii Plantaginaceae Plantain, bottle-brush Plantago aristata Plantaginaceae Plantain, buck-horn Plantago lanceolata Plantaginaceae Plantain, pale-seed Plantago virginica Plantaginaceae Plantain, red-seed Plantago rhodosperma Plantaginaceae Plantain, woolly Plantago patagonica Plantaginaceae Plum, chickasaw Prunus angustifolia Rosaceae Plum, wild Prunus americana Rosaceae Poison-hemlock Conium maculatum Apiaceae Poison-ivy Toxicodendron radicans Anacardiaceae Pokeweed Phytolacca americana Phytolaccaceae Pondweed, baby Potamogeton pusillus Potamogetonaceae Pondweed, leafy Potamogeton foliosus Potamogetonaceae Pondweed, long-leaf Potamogeton nodosus Potamogetonaceae Poppy-mallow, pale Callirhoe alcaeoides Malvaceae Poppy-mallow, purple Callirhoe involucrata Malvaceae Porcupine grass Hesperostipa spartea Poaceae Povertyweed Monolepis nuttalliana Chenopodiaceae Prairie-clover, fox-tail Dalea leporina Fabaceae Prairie-clover, purple Dalea purpurea Fabaceae Prairie-clover, round-head Dalea multiflora Fabaceae Prairie-clover, silk-top Dalea aurea Fabaceae Prairie-clover, white Dalea candida Fabaceae Prairie-coneflower, upright Ratibida columnifera Asteraceae Prickly-ash Zanthoxylum americanum Rutaceae Pricklypear, plains Opuntia macrorhiza Cactaceae Prickly-poppy, white Argemone polyanthemos Papaveraceae Puccoon, fringed Lithospermum incisum Boraginaceae Puncturevine Tribulus terrestris Zygophyllaceae Purpletop Tridens flavus Poaceae Purslane, common Portulaca oleracea Portulacaceae Pussytoes, field Antennaria neglecta Asteraceae Ragweed, annual Ambrosia artemisiifolia Asteraceae Ragweed, giant Ambrosia trifida Asteraceae Ragweed, western Ambrosia psilostachya Asteraceae Raspberry, black Rubus occidentalis Rosaceae Rattlebox Crotalaria sagittalis Fabaceae Rattlesnake fern Botrychium virginianum Ophioglossaceae Redbud, eastern Cercis canadensis Fabaceae Red-cedar Juniperus virginiana Cupressaceae Redtop Agrostis stolonifera Poaceae Rockcress, hairy Arabis hirsuta Brassicaceae Rock-jasmine, western Androsace occidentalis Primulaceae Rose, Arkansas Rosa arkansana Rosaceae Rose, multiflora Rosa multiflora Rosaceae Rosinweed, whole-leaf Silphium integrifolium Asteraceae Ruellia, fringe-leaf Ruellia humilis Acanthaceae Ruellia, limestone Ruellia strepens Acanthaceae Rush, Dudley's Juncus dudleyi Junacaceae Rush, inland Juncus interior Junacaceae Rush, Torrey's Juncus torreyi Junacaceae Russian-olive Elaeagnus angustifolia Elaeagnaceae Rye grass Lolium perenne Poaceae Sage, blue Salvia azurea Lamiaceae Sage, lance-leaf Salvia reflexa Lamiaceae Sage, Pitcher's Salvia azurea Lamiaceae Sagewort, Louisiana Artemisia ludoviciana Asteraceae Salsify, western Tragopogon dubius Asteraceae Sandbur Cenchrus longispinus Poaceae Sandwort, thyme-leaf Arenaria serpyllifolia Caryophyllaceae Sanicle, Canadian Sanicula canadensis Apiaceae Scaleseed Spermolepis inermis Apiaceae Scouring-rush, smooth Equisetum laevigatum Equisetaceae Scurfpea, breadroot Pediomelum esculentum Fabaceae Scurfpea, many-flower Psoralidium tenuiflorum Fabaceae Scurfpea, silver-leaf Pediomelum argophyllum Fabaceae Sedge, bottle-brush Carex hystericina Cyperaceae Sedge, Davis' Carex davisii Cyperaceae Sedge, Emory's Carex emoryi Cyperaceae Sedge, Fox Carex vulpinoidea Cyperaceae Sedge, Frank's Carex frankii Cyperaceae Sedge, heavy Carex gravida Cyperaceae Sedge, Mead's Carex meadii Cyperaceae Sedge, narrow-leaf Carex grisea Cyperaceae Sedge, pest Carex molesta Cyperaceae Sedge, prairie Carex inops Cyperaceae Sedge, shoreline Carex hyalinolepis Cyperaceae Sedge, southern Carex austrina Cyperaceae Sedge, straw Carex brevior Cyperaceae Sedge, white-tinge Carex albicans Cyperaceae Sedge, woodland Carex blanda Cyperaceae Sedge, woolly Carex pellita Cyperaceae Sedge, yellow-fruit Carex brachyglossa Cyperaceae Selfheal Prunella vulgaris Lamiaceae Senna, wild Senna marilandica Fabaceae Sensitive-brier, cat-claw Mimosa nuttallii Fabaceae Shepherd's-purse Capsella bursa-pastoris Brassicaceae Sida, prickly Sida spinosa Malvaceae Silene, starry Silene stellata Caryophyllaceae Skullcap, small Scutellaria parvula Lamiaceae Smartweed, dotted Polygonum punctatum Polygalaceae Smartweed, lady's-thumb Polygonum persicaria Polygalaceae Smartweed, pale Polygonum lapathifolium Polygalaceae Smartweed, Pennsylvania Polygonum pensylvanicum Polygalaceae Smartweed, Virginia Polygonum virginianum Polygalaceae Smartweed, water Polygonum amphibium Polygalaceae Snakeroot, white Ageratina altissima Asteraceae Snow-on-the-mountain Euphorbia marginata Euphorbiaceae Soapweed, small Yucca glauca Agavaceae Soapwort Saponaria officinalis Caryophyllaceae Solomon's-seal Polygonatum biflorum Polygalaceae Sow-thistle, prickly Sonchus asper Asteraceae Spanish needles Bidens bipinnata Asteraceae Speedwell, corn Veronica arvensis Scrophulariaceae Speedwell, field Veronica agrestis Scrophulariaceae Speedwell, purslane Veronica peregrina Scrophulariaceae Speedwell, water Veronica anagallis-aquatica Scrophulariaceae Spiderwort, bracted Tradescantia bracteata Commelinaceae Spiderwort, Ohio Tradescantia ohiensis Commelinaceae Spike-rush, flat-stem Eleocharis compressa Cyperaceae Spike-rush, long-stem Eleocharis palustris Cyperaceae Spike-rush, red-foot Eleocharis erythropoda Cyperaceae Sprangletop, bearded Leptochloa fusca Poaceae Sprangletop, red Leptochloa panicea Poaceae Spurge, eastern toothed Euphorbia dentata Euphorbiaceae Spurge, flowering Euphorbia corollata Euphorbiaceae Spurge, painted Euphorbia cyathophora Euphorbiaceae Spurge, six-angle Euphorbia hexagona Euphorbiaceae Spurge, warty Euphorbia spathulata Euphorbiaceae Spurge, western toothed Euphorbia davidii Euphorbiaceae St. John's-wort, common Hypericum perforatum Clusiaceae Star-of-Bethlehem Ornithogalum umbellatum Liliaceae Stenosiphon, flax-leaf Stenosiphon linifolius Onagraceae Stick-leaf Mentzelia oligosperma Loasaceae Stickseed, Virginia Hackelia virginiana Boraginaceae Stink grass Eragrostis cilianensis Poaceae Stonecrop, ditch Penthorum sedoides Crassulaceae Sumac, aromatic Rhus aromatica Anacardiaceae Sumac, smooth Rhus glabra Anacardiaceae Summer haw Crategus mollis Rosaceae Sumpweed, annual Iva annua Asteraceae Sunflower, common Helianthus annuus Asteraceae Sunflower, hairy Helianthus hirsutus Asteraceae Sunflower, Maximilian's Helianthus maximilianii Asteraceae Sunflower, plains Helianthus petiolaris Asteraceae Sunflower, stiff Helianthus pauciflorus Asteraceae Sunflower, viagra Helianthus pauciflorus Asteraceae Sweet-cicely, long-style Osmorhiza longistylis Apiaceae Sweet-clover, white Melilotus officinalis Fabaceae Sweet-clover, yellow Melilotus officinalis Fabaceae Switch grass Panicum virgatum Poaceae Sycamore Platanus occidentalis Platanaceae Tansy-mustard, flixweed Descurainia sophia Brassicaceae Tansy-mustard, pinnate Descurainia pinnata Brassicaceae Thistle, bull Cirsium vulgare Asteraceae Thistle, tall Cirsium altissimum Asteraceae Thistle, wavy-leaf Cirsium undulatum Asteraceae Threeawn, prairie Aristida oligantha Poaceae Threeawn, purple Aristida purpurea Poaceae Tick-clover, hoary Desmodium canescens Fabaceae Tick-clover, Illinois Desmodium illinoense Fabaceae Tick-clover, large-flower Desmodium glutinosum Fabaceae Tick-clover, panicled Desmodium paniculatum Fabaceae Tick-clover, sessile Desmodium sessilifolium Fabaceae Tickle grass Agrostis hyemalis Poaceae Timothy Phleum pratense Poaceae Toad-flax, bastard Comandra umbellata Santalaceae Toothcup, purple Ammannia coccinea Lythraceae Toothwort, cut-leaf Cardamine concatenata Brassicaceae Trumpet-creeper Campsis radicans Bignoniaceae Tumble grass Schedonnardus paniculatus Poaceae Umbrella-sedge Fuirena simplex Cyperaceae Velvetleaf Abutilon theophrasti Malvaceae Venus'-looking-glass, clasping Triodanis perfoliata Campanulaceae Venus'-looking-glass, slimpod Triodanis leptocarpa Campanulaceae Verbena, bigbract Verbena bracteata Verbenaceae Verbena, blue Verbena hastata Verbenaceae Verbena, Dakota Glandularia bipinnatifida Verbenaceae Verbena, narrow-leaf Verbena simplex Verbenaceae Verbena, nettle-leaf Verbena urticifolia Verbenaceae Verbena, prostrate Verbena bracteata Verbenaceae Verbena, rose Glandularia canadensis Verbenaceae Verbena, white Verbena urticifolia Verbenaceae Verbena, woolly Verbena stricta Verbenaceae Vetch, American Vicia americana Fabaceae Vetch, hairy Vicia villosa Fabaceae Vine-mesquite Panicum obtusum Poaceae Violet, common Viola nephrophylla Violaceae Violet, downy blue Viola sororia Violaceae Violet, prairie Viola pedatifida Violaceae Virginia creeper Parthenocissus quinquefolia Vitaceae Wahoo, eastern Euonymus atropurpurea Celastraceae Wallflower, bushy Erysimum repandum Brassicaceae Walnut, black Juglans nigra Juglandaceae Watercress Rorippa nasturtium-aquaticumBrassicaceae Water-hemp Amaranthus rudis Amaranthaceae Water-hyssop Bacopa rotundifolia Scrophulariaceae Water-pepper, mild Polygonum hydropiperoides Polygalaceae Water-pepper, swamp Polygonum hydropiper Polygalaceae Water-plantain, subcordate Alisma subcordatum Alismataceae Waterpod Ellisia nyctelea Hydrophyllaceae Wedgescale, prairie Sphenopholis obtusata Poaceae Wheat grass, western Pascopyrum smithii Poaceae White grass Leersia virginica Poaceae Whitlow-wort, white Draba reptans Brassicaceae Wildbean, smooth-seed Strophostyles leiosperma Fabaceae Wildbean, trailing Strophostyles helvula Fabaceae Wild-indigo, bicolor Baptisia x bicolor Fabaceae Wild-indigo, blue Baptisia australis Fabaceae Wild-indigo, plains Baptisia bracteata Fabaceae Wild-rye, Canadian Elymus canadensis Poaceae Wild-rye, hairy Elymus villosus Poaceae Wild-rye, Virginia Elymus virginicus Poaceae Willow, black Salix nigra Salicaceae Willow, Carolina Salix caroliniana Salicaceae Willow, peach-leaf Salix amygdaloides Salicaceae Willow, sandbar Salix exigua Salicaceae Windmill grass Chloris verticillata Poaceae Wing-stem Verbesina alternifolia Scrophulariaceae Wintercress Barbarea vulgaris Brassicaceae Witch grass, common Panicum capillare Poaceae Witch grass, fall Digitaria cognata Poaceae Wood-nettle, Canadian Laportea canadensis Urticaceae Wood-sorrel, gray-green Oxalis dillenii Oxalidaceae Wood-sorrel, violet Oxalis violacea Oxalidaceae Wood-sorrel, yellow Oxalis stricta Oxalidaceae Yarrow, western Achillea millefolium Asteraceae Yellowcress, bog Rorippa palustris Brassicaceae Yellowcress, spreading Rorippa sinuata Brassicaceae Yellowcress, stalkless Rorippa sessiliflora Brassicaceae Yerba-de-tajo Eclipta prostrata Asteraceae Yucca Yucca glauca Agavaceae