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Your search returned 651 results.
Acer negundo  - boxelder
Acer rubrum  - red maple
Acer saccharinum  - silver maple
Acer saccharum  - sugar maple
Actaea pachypoda  - white baneberry
Actaea racemosa  - black cohosh
Adiantum capillus-veneris  - maidenhair fern
Adiantum pedatum  - Northern maidenhair fern
Aesculus glabra  - Ohio buckeye
Aesculus pavia  - red buckeye   ( POM )
Agalinis tenuifolia  - slenderleaf false foxglove
Agastache nepetoides  - yellow giant hyssop
Ageratina altissima  - white snakeroot
Alisma triviale  - northern water plantain
Allium cernuum  - nodding onion
Allium stellatum  - prairie onion
Alnus serrulata  - hazel alder
Amelanchier arborea  - serviceberry   ( POM )
Amelanchier stolonifera  - running serviceberry
Amorpha canescens  - lead plant
Amorpha fruticosa  - false indigo
Amsonia ciliata  - blue star
Amsonia illustris  - shining blue star
Amsonia tabernaemontana  - blue star   ( POM )
Andropogon gerardii  - big blue stem
Anemone canadensis  - windflower
Anemone cylindrica  - windflower
Anemone virginiana  - thimbleweed
Antennaria neglecta  - prairie everlasting
Antennaria parlinii  - ladies' tobacco
Apocynum cannabinum  - Indian hemp
Aquilegia canadensis  - columbine
Aralia racemosa  - American spikenard   ( POM )
Aralia spinosa  - Devil's walking stick
Arisaema dracontium  - dragon root
Arisaema triphyllum  - jack-in-the-pulpit
Aristolochia tomentosa  - Dutchman's pipe   ( POM )
Arnoglossum atriplicifolium  - pale Indian plantain
Arnoglossum reniforme  - great Indian plantain
Aronia melanocarpa  - black chokeberry
Artemisia dracunculus  - tarragon
Artemisia ludoviciana  - white sage
Aruncus dioicus  - goat's beard   ( POM )
Arundinaria gigantea  - giant cane bamboo
Asarum canadense  - wild ginger   ( POM )
Asclepias hirtella  - prairie milkweed
Asclepias incarnata  - swamp milkweed   ( POM )
Asclepias purpurascens  - purple milkweed
Asclepias quadrifolia  - fourleaf milkweed
Asclepias speciosa  - showy milkweed
Asclepias sullivantii  - prairie milkweed
Asclepias syriaca  - common milkweed
Asclepias tuberosa  - butterfly weed   ( POM )
Asclepias tuberosa subsp. interior  - butterfly milkweed
Asclepias verticillata  - whorled milkweed
Asclepias viridis  - green milkweed
Asimina triloba  - pawpaw   ( POM )
Asplenium × ebenoides  - walking spleenwort
Asplenium platyneuron  - ebony spleenwort
Asplenium trichomanes  - maidenhair spleenwort
Astragalus canadensis  - milk vetch
Astragalus crassicarpus  - ground plum
Athyrium asplenioides  - southern lady fern
Athyrium filix-femina  - lady fern
Athyrium filix-femina var. angustum  - northern lady fern
Baptisia alba  - false indigo
Baptisia alba var. macrophylla  - white false indigo
Baptisia australis  - blue false indigo   ( POM )
Baptisia australis var. minor  - blue false indigo
Baptisia bracteata  - false indigo
Baptisia sphaerocarpa  - yellow wild indigo   ( POM )
Berchemia scandens  - Alabama supplejack
Berlandiera texana  - green eyes
Betula nigra  - river birch
Bignonia capreolata  - cross vine   ( POM )
Blephilia ciliata  - Ohio horsemint
Blephilia hirsuta  - hairy woodmint
Boltonia asteroides  - false aster
Boltonia decurrens  - decurrent false aster
Bouteloua curtipendula  - sideoats grass
Bouteloua gracilis  - blue grama
Brickellia eupatorioides  - false boneset
Buchloe dactyloides  - buffalo grass
Cabomba caroliniana  - Carolina fanwort
Callicarpa americana  - beautyberry
Callirhoe alcaeoides  - prairie poppy mallow
Callirhoe bushii  - Bush's poppy mallow
Callirhoe digitata  - fringed poppy mallow
Callirhoe involucrata  - purple poppy mallow   ( POM )
Callirhoe triangulata  - clustered poppy mallow
Calopogon tuberosus  - grass pink orchid
Caltha palustris  - marsh marigold
Camassia angusta  - prairie camas
Camassia scilloides  - wild hyacinth
Campanula americana  - tall bellflower
Campsis radicans  - trumpetcreeper
Campsis radicans f. flava  - trumpetcreeper
Cardamine concatenata  - cutleaf toothwort
Carex alata  - broadwing sedge
Carex albicans  - white-tinged sedge
Carex annectens  - sedge
Carex bicknellii  - prairie sedge
Carex bromoides  - brome-like sedge
Carex bushii  - Bush's sedge
Carex crinita  - fringed sedge
Carex cristatella  - sedge
Carex crus-corvi  - sedge
Carex davisii  - Davis's sedge
Carex eburnea  - bristle-leaved sedge
Carex flaccosperma  - blue wood sedge
Carex frankii  - Frank's sedge
Carex grayi  - gray sedge
Carex haydenii  - Hayden's sedge
Carex laxiculmis  - sedge
Carex lurida  - sallow sedge
Carex muskingumensis  - palm sedge   ( POM )
Carex normalis  - greater straw sedge
Carex praegracilis  - clustered field sedge
Carex radiata  - eastern star sedge
Carex retroflexa  - reflexed sedge
Carex squarrosa  - squarrose sedge
Carex stricta  - tussock sedge
Carex swanii  - sedge
Carex vulpinoidea  - fox sedge
Carpinus caroliniana  - American hornbeam   ( POM )
Carya cordiformis  - bitternut hickory
Carya glabra  - pignut
Carya illinoinensis  - hardy pecan
Carya laciniosa  - shellbark hickory
Carya ovata  - shagbark hickory
Carya tomentosa  - mockernut
Castanea ozarkensis  - Ozark chinquapin
Castilleja coccinea  - Indian paintbrush
Catalpa speciosa  - catalpa
Caulophyllum thalictroides  - blue cohosh
Ceanothus americanus  - New Jersey tea
Ceanothus herbaceus  - inland New Jersey tea
Celastrus scandens  - American bittersweet
Celtis laevigata  - sugarberry
Celtis occidentalis  - hackberry
Celtis pumila  - dwarf hackberry
Cephalanthus occidentalis  - buttonbush   ( POM )
Cercis canadensis  - eastern redbud
Chamaecrista fasciculata  - partridge pea
Chasmanthium latifolium  - northern sea oats
Chelone glabra  - white turtlehead
Chelone obliqua  - turtlehead
Chionanthus virginicus  - fringe tree   ( POM )
Cinna arundinacea  - wood reed grass
Cissus trifoliata  - marine ivy
Cladrastis kentukea  - yellowwood   ( POM )
Claytonia virginica  - spring beauty
Clematis crispa  - blue jasmine
Clematis fremontii  - Fremont's leather flower
Clematis pitcheri  - clematis
Clematis versicolor  - pale leather flower
Clematis virginiana  - woodbine
Clinopodium arkansanum  - limestone calamint
Cocculus carolinus  - Carolina moonseed
Collinsia verna  - blue-eyed Mary
Collinsonia canadensis  - horse balm
Conoclinium coelestinum  - blue mistflower
Coreopsis grandiflora  - large-flowered tickseed
Coreopsis lanceolata  - lanceleaf coreopsis
Coreopsis palmata  - tickseed
Coreopsis pubescens  - tickseed
Coreopsis tinctoria  - plains coreopsis   ( POM )
Coreopsis tripteris  - tickseed
Cornus alternifolia  - pagoda dogwood
Cornus amomum subsp. obliqua  - swamp dogwood
Cornus drummondii  - dogwood
Cornus florida  - flowering dogwood
Cornus florida f. rubra  - flowering dogwood
Cornus foemina  - stiff dogwood
Cornus racemosa  - gray dogwood
Corylus americana  - American hazelnut
Cotinus obovatus  - American smoke tree   ( POM )
Crataegus crus-galli  - cockspur thorn
Crataegus nitida  - hawthorn
Crataegus phaenopyrum  - Washington hawthorn
Crataegus viridis  - green hawthorn
Cryptotaenia canadensis  - Canadian honewort
Cunila origanoides  - common dittany
Cuphea viscosissima  - blue waxweed
Cystopteris protrusa  - lowland fragile fern
Dalea candida  - white prairie clover
Dalea gattingeri  - Gattinger's prairie clover
Dalea purpurea  - purple prairie clover
Decodon verticillatus  - swamp loosestrife
Delphinium carolinianum  - Carolina larkspur
Delphinium exaltatum  - tall larkspur
Delphinium treleasei  - Trelease's larkspur
Delphinium tricorne  - dwarf larkspur
Dennstaedtia punctilobula  - hay-scented fern
Deschampsia flexuosa  - crinkled hair grass
Desmanthus illinoensis  - prairie bundleflower
Desmodium illinoense  - tick-trefoil
Diarrhena americana  - American beakgrain
Diarrhena obovata  - American beakgrain
Dicentra cucullaria  - Dutchman's breeches
Diospyros virginiana  - persimmon
Diplazium pycnocarpon  - glade fern
Dirca palustris  - leatherwood
Dodecatheon meadia  - shooting star
Dracopis amplexicaulis  - clasping coneflower
Dryopteris carthusiana  - wood fern
Dryopteris celsa  - log fern
Dryopteris goldiana  - goldie's shield fern
Dryopteris intermedia  - intermediate wood fern
Dryopteris marginalis  - marginal wood fern
Echinacea angustifolia  - narrow-leaf coneflower
Echinacea pallida  - pale purple coneflower
Echinacea paradoxa  - yellow coneflower
Echinacea purpurea  - purple coneflower
Echinacea simulata  - wavyleaf purple coneflower
Eleocharis palustris  - creeping spike rush
Elephantopus carolinianus  - elephant's foot
Elodea canadensis  - Canadian pondweed
Elymus canadensis  - Canada wild rye
Elymus hystrix  - bottlebrush grass
Elymus virginicus  - Virginia wild rye
Enemion biternatum  - false rue anemone
Equisetum hyemale  - scouringrush horsetail
Eragrostis spectabilis  - purple lovegrass
Eragrostis trichodes  - sand lovegrass
Erianthus alopecuroides  - silver plume grass
Erigeron philadelphicus  - common fleabane
Erigeron pulchellus  - Robin's plantain
Eryngium yuccifolium  - rattlesnake master   ( POM )
Erysimum capitatum  - coastal wallflower
Erythronium albidum  - white dog's-tooth violet
Erythronium americanum  - yellow trout-lily
Euonymus americanus  - strawberry bush
Euonymus atropurpureus  - eastern wahoo
Eupatorium altissimum  - tall thoroughwort
Eupatorium perfoliatum  - American boneset
Euphorbia marginata  - snow on the mountain
Eurybia furcata  - forked aster
Eurybia hemispherica  - southern prairie aster
Eurybia macrophylla  - large-leaved aster
Eutrochium fistulosum  - Joe-pyeweed
Eutrochium maculatum  - Joe Pye weed
Eutrochium purpureum  - Joe Pye weed
Evolvulus nuttallianus  - evolvulus
Fagus grandifolia  - American beech
Filipendula rubra  - queen of the prairie
Fragaria vesca  - wild strawberry
Fragaria virginiana  - scarlet strawberry
Frangula caroliniana  - Carolina buckthorn   ( POM )
Fraxinus americana  - white ash
Fraxinus pennsylvanica  - green ash
Fraxinus profunda  - pumpkin ash
Gaillardia aestivalis  - lance leaf blanket flower
Gaillardia pulchella  - Indian blanket
Galium boreale  - northern bedstraw
Galium circaezans  - licorice bedstraw
Gentiana alba  - gentian
Gentiana andrewsii  - closed gentian
Geranium maculatum  - wild geranium
Gillenia stipulata  - American ipecac
Glandularia canadensis  - rose verbena
Gleditsia triacanthos  - honey locust
Goodyera pubescens  - rattlesnake plantain
Grindelia lanceolata  - gum plant
Gymnocladus dioicus  - Kentucky coffee tree   ( POM )
Hamamelis vernalis  - Ozark witch hazel   ( POM )
Hamamelis virginiana  - common witch hazel
Hasteola suaveolens  - false Indian plantain
Helenium autumnale  - sneezeweed
Helenium flexuosum  - purple-headed sneezeweed
Helenium virginicum  - sneezeweed
Helianthus annuus  - common sunflower
Helianthus divaricatus  - sunflower
Helianthus maximiliani  - Maximilian sunflower
Helianthus mollis  - ashy sunflower
Helianthus occidentalis  - sunflower
Helianthus salicifolius  - willow-leaved sunflower   ( POM )
Helianthus silphioides  - rosinweed sunflower
Helianthus tuberosus  - Jerusalem artichoke
Heliopsis helianthoides  - oxeye sunflower
Hepatica americana  - American liverwort
Heterotheca camporum  - golden aster
Heuchera americana  - coral bells
Heuchera parviflora  - littleflower alumroot
Heuchera parviflora var. puberula  - littleflower alumroot
Heuchera richardsonii  - alum root
Heuchera villosa  - hairy alum root
Hibiscus laevis  - rose mallow
Hibiscus lasiocarpos  - rose mallow
Hibiscus moscheutos  - swamp mallow
Hydrangea arborescens  - smooth hydrangea   ( POM )
Hydrastis canadensis  - golden seal
Hydrophyllum virginianum  - Virginia waterleaf
Hymenocallis caroliniana  - spider lily
Hypericum ascyron subsp. pyramidatum  - great St. John's wort
Hypericum prolificum  - shrubby St. John's wort
Hypericum sphaerocarpum  - round fruited St. John's wort
Ilex decidua  - possumhaw
Ilex opaca  - American holly
Ilex verticillata  - winterberry
Impatiens capensis  - jewelweed
Iodanthus pinnatifidus  - purple rocket
Ionactis linariifolia  - stiff aster
Ipomoea pandurata  - wild potato vine
Iresine rhizomatosa  - bloodleaf
Iris brevicaulis  - zigzag iris
Iris cristata  - dwarf crested iris
Iris fulva  - copper iris
Iris virginica  - southern blue flag
Iris virginica var. shrevei  - southern blue flag
Itea virginica  - Virginia sweetspire
Juglans cinerea  - butter nut
Juglans nigra  - black walnut
Juncus dudleyi  - Dudley's rush
Juncus effusus  - common rush   ( POM )
Juncus tenuis  - rush
Juniperus ashei  - ashe juniper
Juniperus virginiana  - red cedar
Koeleria macrantha  - Prairie junegrass
Lactuca floridana  - lettuce
Leitneria pilosa subsp. ozarkana  - Ozark hairy corkwood
Lemna minor  - common duckweed
Lespedeza capitata  - bush clover
Liatris aspera  - blazing star   ( POM )
Liatris cylindracea  - slender blazing star
Liatris ligulistylis  - blazing star
Liatris mucronata  - narrow-leaved gayfeather
Liatris pycnostachya  - prairie blazing star
Liatris scariosa  - blazing star
Liatris scariosa var. nieuwlandii  - eastern blazingstar
Liatris spicata  - blazing star
Lilium michiganense  - Michigan lily
Lilium superbum  - Turkscap lily
Lindera benzoin  - spice bush   ( POM )
Liquidambar styraciflua  - sweet gum
Liriodendron tulipifera  - tulip tree
Lobelia cardinalis  - cardinal flower   ( POM )
Lobelia siphilitica  - blue cardinal flower
Lobelia × speciosa  - lobelia
Lonicera flava  - honeysuckle
Lonicera sempervirens  - trumpet honeysuckle   ( POM )
Magnolia acuminata  - cucumber tree
Maianthemum racemosum  - false Solomon's seal
Maianthemum stellatum  - false Solomon's seal   ( POM )
Manfreda virginica  - American agave
Marshallia caespitosa  - Barbara's buttons
Matelea decipiens  - climbing milkweed
Matelea gonocarpa  - milkweed
Medeola virginiana  - Indian cucumber root
Melanthium virginicum  - bunchflower   ( POM )
Menispermum canadense  - common moonseed
Menyanthes trifoliata  - bog bean
Mertensia virginica  - Virginia bluebells   ( POM )
Mimosa quadrivalvis  - sensitive brier
Mimulus alatus  - winged monkey flower
Mimulus ringens  - Allegheny monkey flower
Mitchella repens  - partridge berry
Mitella diphylla  - brewer's-cap
Monarda bradburiana  - eastern beebalm   ( POM )
Monarda citriodora  - lemon mint
Monarda fistulosa  - wild bergamot
Monarda punctata  - dotted beebalm
Morus rubra  - red mulberry
Muhlenbergia capillaris  - pink muhlygrass
Nelumbo lutea  - American lotus
Neviusia alabamensis  - Alabama snow wreath
Nothoscordum bivalve  - false garlic
Nuphar lutea  - yellow pond lily
Nyssa aquatica  - tupelo gum
Nyssa sylvatica  - black gum   ( POM )
Oenothera biennis  - common evening primrose
Oenothera macrocarpa  - Missouri evening primrose
Oenothera pilosella  - evening primrose
Oenothera serrulata  - yellow sundrops
Oenothera speciosa  - white evening primrose
Onoclea sensibilis  - sensitive fern
Opuntia humifusa  - prickly-pear
Opuntia macrorhiza  - plains prickly pear
Osmorhiza longistylis  - sweet cicely
Osmunda claytoniana  - interrupted fern
Osmundastrum cinnamomeum  - cinnamon fern
Ostrya virginiana  - eastern hop hornbeam
Oxalis violacea  - violet wood sorrel
Packera aurea  - golden ragwort
Packera obovata  - round-leaved ragwort
Panax quinquefolius  - American ginseng
Panicum virgatum  - switch grass
Parthenium hispidum  - American feverfew
Parthenium integrifolium  - wild quinine
Parthenocissus quinquefolia  - Virginia creeper
Paspalum floridanum  - Florida paspalum
Passiflora incarnata  - purple passionflower
Pedicularis canadensis  - common lousewort
Peltandra virginica  - green arrow arum
Penstemon cobaea  - dew flower
Penstemon digitalis  - beardtongue
Penstemon grandiflorus  - large beardtongue
Penstemon pallidus  - pale beardtongue
Penstemon tubaeflorus  - White wand beardtongue
Persicaria virginiana  - knotweed
Phegopteris hexagonoptera  - broad beech fern
Phemeranthus calycinus  - fameflower
Philadelphus pubescens  - broad-leaf mock orange
Phlox bifida  - sand phlox
Phlox divaricata  - wild sweet William
Phlox divaricata subsp. laphamii  - wild sweet William
Phlox glaberrima  - smooth phlox
Phlox maculata  - spotted phlox
Phlox maculata subsp. pyramidalis  - leafy meadow phlox
Phlox paniculata  - garden phlox
Phlox pilosa  - prairie phlox
Physocarpus opulifolius  - ninebark   ( POM )
Physostegia angustifolia  - obedient plant
Physostegia virginiana  - obedient plant
Phytolacca americana  - pokeweed
Pinus echinata  - short-leaf pine
Platanus occidentalis  - American sycamore
Podophyllum peltatum  - may-apple
Pogonia ophioglossoides  - snakemouth orchid
Polemonium reptans  - Jacob's ladder
Polygonatum biflorum  - Solomon's seal
Polygonatum biflorum var. commutatum  - giant Solomon's seal
Polymnia canadensis  - small-flowered leaf cup
Polypodium virginianum  - rock polypody
Polystichum acrostichoides  - Christmas fern   ( POM )
Pontederia cordata  - pickerel weed
Populus deltoides  - eastern cottonwood
Populus tremuloides  - American aspen
Porteranthus trifoliatus  - Indian physic
Portulaca oleracea  - little hogweed
Prunus americana  - wild plum
Prunus angustifolia  - chickasaw plum
Prunus mexicana  - Mexican plum
Prunus serotina  - black cherry
Prunus virginiana  - chokecherry
Ptelea trifoliata  - hop tree
Pteridium aquilinum  - bracken
Pycnanthemum muticum  - blunt mountainmint   ( POM )
Pycnanthemum pilosum  - American mountain mint
Pycnanthemum tenuifolium  - slender mountain mint
Pycnanthemum virginianum  - American mountain mint
Quercus alba  - white oak
Quercus bicolor  - swamp white oak   ( POM )
Quercus coccinea  - scarlet oak
Quercus ellipsoidalis  - northern pin oak
Quercus falcata  - southern red oak
Quercus imbricaria  - shingle oak
Quercus lyrata  - overcup oak   ( POM )
Quercus macrocarpa  - bur oak
Quercus marilandica  - blackjack oak
Quercus michauxii  - swamp chestnut oak
Quercus muehlenbergii  - chinkapin oak   ( POM )
Quercus nigra  - water oak
Quercus palustris  - pin oak
Quercus phellos  - willow oak   ( POM )
Quercus rubra  - red oak
Quercus shumardii  - shumard oak
Quercus stellata  - post oak
Quercus texana  - Texas red oak
Quercus velutina  - black oak
Ratibida columnifera  - Mexican hat plant
Ratibida pinnata  - grey-head coneflower
Rhododendron prinophyllum  - roseshell azalea
Rhus aromatica  - fragrant sumac
Rhus copallinum  - winged sumac
Rhus glabra  - smooth sumac
Rhus typhina  - staghorn sumac
Ribes aureum  - buffalo currant
Ribes missouriense  - Missouri gooseberry
Ribes odoratum  - clove currant   ( POM )
Robinia pseudoacacia  - black locust
Rosa carolina  - Carolina rose
Rosa palustris  - swamp rose
Rosa setigera  - prairie rose
Rudbeckia fulgida  - orange coneflower
Rudbeckia fulgida var. umbrosa  - Appalachian black-eyed Susan
Rudbeckia hirta  - black-eyed Susan
Rudbeckia laciniata  - cutleaf coneflower
Rudbeckia missouriensis  - Missouri coneflower
Rudbeckia subtomentosa  - sweet coneflower
Rudbeckia triloba  - brown-eyed Susan
Ruellia humilis  - wild petunia
Ruellia strepens  - wild petunia
Sabatia angularis  - rose gentian
Sagittaria graminea  - grassy arrowhead
Sagittaria latifolia  - broadleaf arrowhead
Salix discolor  - pussy willow
Salix nigra  - black willow
Salvia azurea  - blue sage
Salvia lyrata  - cancer weed
Sambucus canadensis  - American black elderberry
Sambucus racemosa  - red elderberry
Sanguinaria canadensis  - bloodroot
Sapindus drummondii  - western soapberry
Sassafras albidum  - sassafras
Saururus cernuus  - lizard's tail
Schizachyrium scoparium  - little bluestem
Schoenoplectus tabernaemontani  - softstem bulrush
Scirpus atrovirens  - green bulrush
Scirpus cyperinus  - wool grass
Scutellaria incana  - downy skullcap
Scutellaria lateriflora  - mad-dog scullcap
Scutellaria ovata  - heart-leaved skullcap
Sedum pulchellum  - widow's cross
Sedum ternatum  - three-leaved stonecrop
Senna marilandica  - wild senna
Senna obtusifolia  - java-bean
Sideroxylon lanuginosum  - chittamwood
Silene caroliniana  - wild pink
Silene regia  - royal catchfly
Silene stellata  - starry campion
Silene virginica  - fire pink
Silphium integrifolium  - rosinweed
Silphium laciniatum  - compass plant   ( POM )
Silphium perfoliatum  - cup plant
Silphium terebinthinaceum  - prairie dock
Sisyrinchium angustifolium  - blue-eyed grass   ( POM )
Sisyrinchium campestre  - prairie blue-eyed grass
Sium suave  - water parsnip
Smilax hispida  - sarsaparilla plant
Solidago caesia  - blue stem goldenrod
Solidago canadensis  - Canadian goldenrod
Solidago drummondii  - goldenrod
Solidago flexicaulis  - broad leaf goldenrod
Solidago gattingeri  - goldenrod
Solidago gigantea  - early goldenrod
Solidago hispida  - goldenrod
Solidago juncea  - early goldenrod
Solidago nemoralis  - old field goldenrod
Solidago odora  - sweet goldenrod
Solidago ptarmicoides  - prairie aster
Solidago riddellii  - Riddell's goldenrod
Solidago rigida  - goldenrod
Solidago rugosa  - rough goldenrod
Solidago ulmifolia  - elm-leaved goldenrod
Sorghastrum nutans  - Indian grass
Spartina pectinata  - prairie cord grass
Spigelia marilandica  - Indian pink
Spiraea alba  - meadowsweet
Spiraea tomentosa  - steeplebush
Sporobolus heterolepis  - prairie dropseed   ( POM )
Staphylea trifolia  - bladdernut
Stenaria nigricans  - diamondflowers
Stylophorum diphyllum  - celandine poppy
Styrax americanus  - American snowbell
Symphyotrichum cordifolium  - blue wood aster
Symphyotrichum drummondii  - Drummond aster
Symphyotrichum ericoides  - heath aster
Symphyotrichum laeve  - smooth aster
Symphyotrichum lateriflorum  - white woodland aster
Symphyotrichum novae-angliae  - New England aster
Symphyotrichum oblongifolium  - aromatic aster   ( POM )
Symphyotrichum oolentangiense  - skyblue aster
Symphyotrichum patens  - spreading aster
Symphyotrichum pilosum  - hairy aster
Symphyotrichum puniceum  - swamp aster
Symphyotrichum sericeum  - silky aster
Symphyotrichum turbinellum  - prairie aster
Taenidia integerrima  - yellow pimpernel
Tephrosia virginiana  - goat's rue
Teucrium canadense  - American germander
Thalia dealbata  - thalia
Thalictrum dasycarpum  - meadow rue
Thalictrum dioicum  - early meadow-rue
Thalictrum thalictroides  - rue anemone
Thaspium trifoliatum  - purple meadow parsnip
Tilia americana  - American linden
Toxicodendron radicans  - poison ivy
Tradescantia bracteata  - prairie spiderwort
Tradescantia ernestiana  - spiderwort
Tradescantia longipes  - spiderwort
Tradescantia ohiensis  - Ohio spiderwort
Tradescantia subaspera  - zigzag spiderwort
Tradescantia tharpii  - spider lily
Tradescantia virginiana  - spider lily
Trautvetteria caroliniensis  - false bugbane
Tridens strictus  - longspike tridens
Trillium flexipes  - white wake robin
Trillium recurvatum  - prairie wake robin
Trillium sessile  - wood lily
Trillium viride  - green trillium
Tripsacum dactyloides  - eastern gamagrass
Typha latifolia  - broadleaf cattail
Ulmus alata  - winged elm
Ulmus americana  - American elm
Ulmus rubra  - slippery elm
Uvularia grandiflora  - large-flowered bellwort
Vaccinium stamineum  - deerberry
Verbena hastata  - American blue vervain
Verbena stricta  - hoary vervain
Verbesina helianthoides  - crown beard
Vernonia arkansana  - great ironweed
Vernonia baldwinii  - western ironweed
Vernonia fasciculata  - prairie ironweed
Vernonia gigantea  - giant ironweed
Vernonia missurica  - ironweed
Veronicastrum virginicum  - Culver's root
Viburnum dentatum  - arrowwood viburnum
Viburnum lentago  - nannyberry viburnum
Viburnum opulus var. americanum  - American cranberrybush
Viburnum prunifolium  - blackhaw viburnum   ( POM )
Viburnum rufidulum  - rusty blackhaw viburnum
Viola pedata  - bird's foot violet
Viola pedatifida  - larkspur violet
Viola pubescens var. eriocarpa  - smooth yellow violet
Viola sororia  - common blue violet
Viola striata  - striped cream violet
Vitis aestivalis  - summer grape
Waldsteinia fragarioides  - barren strawberry
Wisteria frutescens  - American wisteria
Woodsia obtusa subsp. obtusa  - blunt-lobed woodsia
Woodwardia areolata  - netted chain fern
Zanthoxylum americanum  - toothache tree
Zizia aptera  - meadow zizia
Zizia aurea  - golden Alexander