| Abutilon theophrastii |
BUTTONWEED |
| Acalypha rhomboidea |
THREE-SEEDED MERCURY |
| Acer negundo |
ASH-LEAVED MAPLE |
| Acer saccharinum |
RIVER MAPLE |
| Achillea millefolium |
COMMON MILFOIL |
| Adiantum pedatum |
MAIDENHAIR FERN |
| Agalinis tenuifolia |
SLENDER FALSE FOXGLOVE |
| Agastache nepetoides |
YELLOW GIANT HYSSOP |
| Agrimonia parviflora |
SWAMP AGRIMONY |
| Agropyron repens |
COUCH GRASS |
| Agrostis alba |
RED TOP |
| Alisma plantago aquatica parviflorum |
COMMON WATER PLANTAIN |
| Allium canadense |
WILD GARLIC |
| Allium vineale |
FIELD GARLIC |
| Amaranthus albus |
TUMBLEWEED |
| Amaranthus hybridus |
GREEN AMARANTH |
| Amaranthus retroflexus |
ROUGH PIGWEED |
| Amaranthus tuberculatus |
TALL WATERHEMP |
| Ambrosia artemisiifolia |
BITTERWEED |
| Ambrosia psilostachya |
WESTERN RAGWEED |
| Ambrosia trifida |
BUFFALO WEED |
| Amelanchier humilis |
LOW SHADBUSH |
| Amorpha canescens |
LEAD PLANT |
| Andropogon gerardii |
BIG BLUESTEM |
| Anemone canadensis |
MEADOW ANEMONE |
| Anemone caroliniana |
CAROLINA ANEMONE |
| Anemone virginiana |
TALL ANEMONE |
| Antennaria plantaginifolia |
EVERLASTING |
| Anthemis cotula |
DOG FENNEL |
| Apios americana |
GROUNDNUT |
| Apocynum cannabinum |
DOGBANE |
| Aquilegia canadensis |
COLUMBINE |
| Aralia racemosa |
AMERICAN SPIKENARD |
| Arisaema triphyllum |
INDIAN TURNIP |
| Aristida oligantha |
PLAINS THREE AWN GRASS |
| Aristida tuberculosa |
BEACH THREE AWN GRASS |
| Armoracia rusticana |
HORSERADISH |
| Artemisia campestris |
BEACH WORMWOOD |
| Asclepias amplexicaulis |
SAND MILKWEED |
| Asclepias incarnata |
SWAMP MILKWEED |
| Asclepias syriaca |
COMMON MILKWEED |
| Asclepias verticillata |
HORSETAIL MILKWEED |
| Asclepias viridiflora |
GREEN MILKWEED |
| Asparagus officinalis |
GARDEN ASPARAGUS |
| Aster drummondii |
DRUMMOND'S ASTER |
| Aster ericoides prostratus |
HEATH ASTER |
| Aster novae-angliae |
NEW ENGLAND ASTER |
| Aster pilosus |
HAIRY ASTER |
| Aster simplex |
PANICLED ASTER |
| Astragalus canadensis |
CANADIAN MILK VETCH |
| Atriplex patula |
FAT-HEN SALTBUSH |
| Baptisia lactea |
WHITE WILD INDIGO |
| Barbarea vulgaris arcuata |
WINTER CRESS |
| Besseya bullii |
KITTEN TAILS |
| Betula nigra |
RED BIRCH |
| Bidens aristosa |
SWAMP MARIGOLD |
| Bidens bipinnata |
SPANISH NEEDLES |
| Bidens cernua |
NODDING BEGGAR-TICKS |
| Bidens coronata |
BEGGAR-TICKS |
| Bidens tripartita |
BEGGARTICK |
| Boltonia asteroides |
FALSE ASTER |
| Botrychium virginianum |
RATTLESNAKE FERN |
| Bouteloua hirsuta |
BLACK GRAMMA |
| Brickellia eupatorioides |
FALSE BONESET |
| Bromus commutatus |
HAIRY BROME |
| Bromus inermis |
AWNLESS BROME GRASS |
| Bromus japonicus |
JAPANESE BROME |
| Bromus tectorum |
CHEAT GRASS BROME |
| Callirhoe involucrata |
POPPY MALLOW |
| Calystegia sepium americana |
AMERICAN BINDWEED |
| Camassia scilloides |
WILD HYACINTH |
| Campanula americana |
AMERICAN BELLFLOWER |
| Campsis radicans |
TRUMPET CREEPER |
| Cannabis sativa |
HASHISH |
| Capsella bursa-pastoris |
SHEPERD'S-PURSE |
| Cardamine parviflora arenicola |
SMALL-FLOWERED BITTER CRESS |
| Cardamine pensylvanica |
BITTER CRESS |
| Carduus nutans |
MUSK BRISTLE THISTLE |
| Carex blanda |
WOODLAND SEDGE |
| Carex brevior |
FESCUE SEDGE |
| Carex cephalophora |
|
| Carex convoluta |
|
| Carex davisii |
DAVIS SEDGE |
| Carex festucacea |
SEDGE |
| Carex gravida |
HEAVY SEDGE |
| Carex grisea |
SEDGE |
| Carex hystricina |
BOTTLEBRUSH SEDGE |
| Carex lacustris |
RIVER SEDGE |
| Carex laeviconica |
SEDGE |
| Carex lupuliformis |
SEDGE |
| Carex muhlenbergii |
|
| Carex pensylvanica |
PENNSYLVANIA SEDGE |
| Carex rosea |
|
| Carex stricta |
TUSSOCK SEDGE |
| Carex tribuloides |
SEDGE |
| Carex typhina |
SEDGE |
| Carex vulpinoidea |
FOX SEDGE |
| Carya cordiformis |
BITTERNUT HICKORY |
| Carya glabra |
PIGNUT HICKORY |
| Carya illinoensis |
PECAN |
| Carya ovata |
SCALY-BARK HICKORY |
| Carya tomentosa |
MOCKERNUT HICKORY |
| Cassia fasciculata |
GOLDEN CASSIA |
| Ceanothus americanus |
NEW JERSEY TEA |
| Celastrus scandens |
BITTERSWEET |
| Celtis occidentalis |
HACKBERRY |
| Celtis occidentalis canina |
HACKBERRY |
| Cenchrus longispinus |
MAT SANDBUR |
| Cephalanthus occidentalis |
BUTTONBUSH |
| Cerastium vulgatum |
COMMON MOUSE-EAR CHICKWEED |
| Cercis canadensis |
EASTERN REDBUD |
| Chaerophyllum procumbens |
WILD CHERVIL |
| Chamaesyce geyeri |
SPURGE |
| Chamaesyce glyptosperma |
SPURGE |
| Chamaesyce maculata |
NODDING SPURGE |
| Chamaesyce supina |
MILK SPURGE |
| Chenopodium album |
LAMB'S QUARTERS |
| Chenopodium desiccatum leptophylloides |
NARROW-LEAVED GOOSEFOOT |
| Chenopodium pallescens |
NARROW-LEAVED GOOSEFOOT |
| Cirsium altissimum |
TALL THISTLE |
| Cirsium discolor |
FIELD THISTLE |
| Cirsium vulgare |
BULL THISTLE |
| Clematis pitcheri |
LEATHER FLOWER |
| Commelina erecta |
DAY FLOWER |
| Conium maculatum |
POISON HEMLOCK |
| Convolvulus arvensis |
FIELD BINDWEED |
| Conyza canadensis |
HORSEWEED |
| Coreopsis palmata |
PRAIRIE COREOPSIS |
| Coreopsis tripteris |
TALL COREOPSIS |
| Cornus drummondii |
ROUGH-LEAVED DOGWOOD |
| Cornus obliqua |
PALE DOGWOOD |
| Cornus racemosa |
GRAY DOGWOOD |
| Corydalis micrantha |
SLENDER CORYDALIS |
| Corylus americana |
AMERICAN FILBERT |
| Croton glandulosus septentrionalis |
SAND CROTON |
| Crotonopsis linearis |
RUSHFOIL |
| Cryptotaenia canadensis |
HONEWORT |
| Cycloloma atriplicifolium |
TUMBLE RINGWING |
| Cyperus esculentus |
CHUFA |
| Cyperus filiculmis |
FERN FLATSEDGE |
| Cyperus rivularis |
BROOK FLAT SEDGE |
| Cyperus schweinitzii |
SCHWEINITZ FLATSEDGE |
| Cyperus strigosus |
STRAW COLORED FLATSEDGE |
| Cypripedium pubescens |
LG. YELLOW LADY-SLIPPER ORCHID |
| Cystopteris protrusa |
FRAGILE FERN |
| Dactylis glomerata |
ORCHARD GRASS |
| Dalea candida |
WHITE PRAIRIE CLOVER |
| Dalea purpurea |
PURPLE PRAIRIE CLOVER |
| Daucus carota |
QUEEN-ANNE'S-LACE |
| Delphinium carolinianum crispum |
WILD BLUE LARKSPUR |
| Dentaria laciniata |
PEPPER-ROOT |
| Descurainia pinnata brachycarpa |
TANSY MUSTARD |
| Desmodium canadense |
SHOWY TICK TREFOIL |
| Desmodium canescens |
HOARY TICK TREFOIL |
| Desmodium glabellum |
TICK TREFOIL |
| Desmodium illinoense |
ILLINOIS TICK TREFOIL |
| Desmodium laevigatum |
GLAUCOUS TICK TREFOIL |
| Desmodium paniculatum |
PANICLED TICK TREFOIL |
| Dicentra cucullaria |
DUTCHMAN'S-BREECHES |
| Dichanthelium acuminatum fasciculatum |
PANIC GRASS |
| Dichanthelium oligosanthes scribnerianum |
SCRIBNER'S PANIC GRASS |
| Dichanthelium villosissimum pseudopubesc |
|
| Digitaria ischaemum |
SMOOTH CRAB GRASS |
| Digitaria sanguinalis |
HAIRY CRAB GRASS |
| Dioscorea villosa |
WILD YAM |
| Draba reptans |
WHITLOW GRASS |
| Draba reptans stellifera |
SMALL WHITLOW GRASS |
| Echinacea pallida |
PALE PURPLE CONEFLOWER |
| Echinochloa muricata |
BARNYARD GRASS |
| Echinochloa muricata wiegandii |
BARNYARD GRASS |
| Echinocystis lobata |
WILD BALSAM-APPLE |
| Eleocharis erythropoda |
|
| Eleusine indica |
GOOSE GRASS |
| Ellisia nyctelea |
AUNT LUCY |
| Elodea canadensis |
ANACHARIS |
| Elymus canadensis |
CANADA WILD RYE |
| Elymus hystrix |
BOTTLEBRUSH GRASS |
| Elymus villosus |
HAIRY WILD RYE |
| Elymus virginicus |
LYME GRASS |
| Equisetum arvense |
COMMON HORSETAIL |
| Equisetum hyemale affine |
SCOURING RUSH |
| Equisetum laevigatum |
SMOOTH SCOURING RUSH |
| Eragrostis cilianensis |
STINK GRASS |
| Eragrostis pectinacea |
CAROLINA LOVE GRASS |
| Eragrostis spectabilis |
PURPLE LOVE GRASS |
| Eragrostis trichodes |
ICE CREAM GRASS |
| Erechtites hieracifolia |
FIRE WEED |
| Erigeron annuus |
ANNUAL FLEABANE |
| Erigeron philadelphicus |
MARSH FLEABANE |
| Erigeron strigosus |
DAISY FLEABANE |
| Eryngium yuccifolium |
RATTLESNAKE MASTER |
| Erysimum cheiranthoides |
WORMSEED MUSTARD |
| Erythronium albidum |
WHITE ADDER'S TONGUE |
| Eupatorium altissimum |
TALL BONESET |
| Eupatorium perfoliatum |
COMMON BONESET |
| Eupatorium purpureum |
GREEN-STEMMED JOE-PYE WEED |
| Eupatorium rugosum |
WHITE SNAKEROOT |
| Eupatorium serotinum |
LATE BONESET |
| Euphorbia corollata |
FLOWERING SPURGE |
| Euphorbia hexagona |
ANGLED SPURGE |
| Euphorbia marginata |
SNOW-ON-THE-MOUNTAIN |
| Festuca obtusa |
NODDING FESCUE |
| Festuca pratensis |
ENGLISH BLUEGRASS |
| Fragaria virginiana |
WILD STRAWBERRY |
| Fraxinus nigra |
BLACK ASH |
| Fraxinus pennsylvanica |
GREEN ASH |
| Froelichia floridana campestris |
COTTONWEED |
| Froelichia gracilis |
COTTONWEED |
| Galium aparine |
ANNUAL BEDSTRAW |
| Galium circaezans |
WILD LICORICE |
| Galium concinnum |
SHINING BEDSTRAW |
| Galium obtusum |
WILD MADDER |
| Gaura biennis |
BUTTERFLY-WEED |
| Gentiana alba |
PALE GENTIAN |
| Geranium maculatum |
WILD GERANIUM |
| Geum canadense |
WHITE AVENS |
| Geum laciniatum |
ROUGH AVENS |
| Gleditsia triacanthos |
HONEY LOCUST |
| Glyceria striata |
FOWL MANNA GRASS |
| Gnaphalium obtusifolium |
CATFOOT |
| Gratiola neglecta |
CLAMMY HEDGE HYSSOP |
| Gymnocladus dioicus |
KENTUCKY COFFEETREE |
| Hedeoma hispida |
ROUGH PENNYROYAL |
| Helenium autumnale |
AUTUMN SNEEZEWEED |
| Helianthemum bicknellii |
FROSTWEED |
| Helianthus annuus |
COMMON SUNFLOWER |
| Helianthus grosseserratus |
SAWTOOTH SUNFLOWER |
| Helianthus occidentalis |
WESTERN SUNFLOWER |
| Helianthus petiolaris |
KANSAS SUNFLOWER |
| Helianthus rigidus |
PRAIRIE SUNFLOWER |
| Helianthus strumosus |
PALE-LEAVED SUNFLOWER |
| Helianthus tuberosus subcanescens |
JERUSALEM ARTICHOKE |
| Heliopsis helianthoides |
FALSE SUNFLOWER |
| Hepatica nobilis acuta |
SHARP-LOBED HEPATICA |
| Hibiscus laevis |
HALBERD-LEAVED ROSE MALLOW |
| Hibiscus trionum |
FLOWER-OF-AN-HOUR |
| Hordeum jubatum |
FOX-TAIL BARLEY |
| Hordeum pusillum |
LITTLE BARLEY |
| Humulus lupulus |
COMMON HOPS |
| Hydrophyllum virginianum |
VIRGINIA WATERLEAF |
| Hypericum punctatum |
SPOTTED ST. JOHNS-WORT |
| Hypericum pyramidatum |
GIANT ST. JOHNS-WORT |
| Hypericum sphaerocarpum |
ROUND-FRUITED ST. JOHNS-WORT |
| Iodanthus pinnatifidus |
PURPLE ROCKET |
| Ipomoea pandurata |
WILD SWEET POTATO VINE |
| Juglans nigra |
BLACK WALNUT |
| Juncus dudleyi |
DUDLEY RUSH |
| Juncus interior |
INLAND RUSH |
| Juncus tenuis |
PATH RUSH |
| Juniperus virginiana |
EASTERN RED CEDAR |
| Koeleria macrantha |
CRESTED HAIR GRASS |
| Krigia virginica |
DWARF DANDELION |
| Lactuca floridana |
BLUE LETTUCE |
| Lactuca serriola |
COMPASS PLANT |
| Laportea canadensis |
CANADA WOOD NETTLE |
| Lathyrus latifolius |
EVERLASTING PEA |
| Leersia virginica |
WHITE GRASS |
| Lemna minor |
COMMON DUCKWEED |
| Leonurus cardiaca |
MOTHERWORT |
| Leonurus marrubiastrum |
LION'S-TAIL |
| Lepidium densiflorum |
PEPPERGRASS |
| Lepidium virginicum |
COMMON PEPPERGRASS |
| Leptoloma cognatum |
FALL WITCH GRASS |
| Lespedeza capitata |
BUSH CLOVER |
| Liatris aspera |
ROUGH BLAZING STAR |
| Linaria canadensis |
BLUE TOADFLAX |
| Linaria vulgaris |
BUTTER-AND-EGGS |
| Lindernia dubia |
FALSE PIMPERNEL |
| Lithospermum caroliniense |
HAIRY PUCCOON |
| Lobelia cardinalis |
CARDINAL-FLOWER |
| Lobelia inflata |
INDIAN TOBACCO |
| Lobelia siphilitica |
BLUE CARDINAL-FLOWER |
| Lolium perenne |
CRESTED RYE GRASS |
| Lotus corniculatus |
BIRDSFOOT-TREFOIL |
| Lychnis alba |
EVENING CAMPION |
| Lycopus americanus |
COMMON WATER HOREHOUND |
| Lysimachia ciliata |
FRINGED LOOSESTRIFE |
| Lysimachia thyrsiflora |
TUFTED LOOSESTRIFE |
| Lythrum alatum |
WINGED LOOSESTRIFE |
| Maclura pomifera |
HEDGE APPLE |
| Malus ioensis |
IOWA CRAB APPLE |
| Malva rotundifolia |
DWARF MALLOW |
| Matricaria matricarioides |
PINEAPPLE WEED |
| Medicago lupulina |
BLACK MEDIC |
| Medicago sativa |
ALFALFA |
| Melilotus alba |
WHITE SWEET CLOVER |
| Melilotus officinalis |
YELLOW SWEET CLOVER |
| Menispermum canadense |
MOONSEED |
| Mertensia virginica |
BLUEBELLS |
| Mimulus ringens |
MONKEY FLOWER |
| Mirabilis nyctaginea |
WILD FOUR-O'CLOCK |
| Miscanthus sacchariflorus |
PLUME GRASS |
| Mollugo verticillatus |
CARPETWEED |
| Monarda fistulosa |
WILD BERGAMOT |
| Monarda punctata villicaulis |
HORSEMINT |
| Morus alba |
WHITE MULBERRY |
| Muhlenbergia frondosa |
COMMON SATIN GRASS |
| Muhlenbergia mexicana |
LEAFY SATIN GRASS |
| Oenothera biennis |
EVENING PRIMROSE |
| Oenothera laciniata |
RAGGED EVENING PRIMROSE |
| Oenothera rhombipetala |
SAND PRIMROSE |
| Opuntia humifusa |
PRICKLY-PEAR |
| Osmorhiza claytonii |
SWEET CICELY |
| Osmorhiza longistylis |
ANISE-ROOT |
| Ostrya virginiana |
HOP HORNBEAM |
| Oxalis dillenii |
YELLOW WOOD SORREL |
| Oxalis stricta |
YELLOW WOOD SORREL |
| Oxalis violacea |
PURPLE OXALIS |
| Panicum capillare |
WITCH GRASS |
| Panicum dichotomiflorum |
FALL PANICUM |
| Panicum virgatum |
PRAIRIE SWITCHGRASS |
| Parietaria pensylvanica |
PENNSYLVANIA PELLITORY |
| Parthenocissus inserta |
VIRGINIA CREEPER |
| Parthenocissus quinquefolia |
VIRGINIA CREEPER |
| Paspalum ciliatifolium |
BEADGRASS |
| Pastinaca sativa |
PARSNIP |
| Penstemon pallidus |
PALE BEARD-TONGUE |
| Penthorum sedoides |
DITCH STONECROP |
| Phleum pratense |
TIMOTHY |
| Phryma leptostachya |
LOPSEED |
| Phyla lanceolata |
FOG-FRUIT |
| Physalis heterophylla |
GROUND CHERRY |
| Physalis pubescens |
ANNUAL GROUND CHERRY |
| Physalis subglabrata |
SMOOTH GROUND CHERRY |
| Physalis virginiana |
GROUND CHERRY |
| Phytolacca americana |
POKEWEED |
| Pilea pumila |
CANADA CLEARWEED |
| Plantago lanceolata |
BUCKHORN |
| Plantago patagonica brevicarpa |
SALT AND PEPPER PLANT |
| Plantago rugelii |
RED-STALKED PLANTAIN |
| Platanus occidentalis |
BUTTONWOOD |
| Poa annua |
ANNUAL BLUEGRASS |
| Poa compressa |
CANADIAN BLUEGRASS |
| Poa pratensis |
KENTUCKY BLUEGRASS |
| Poa sylvestris |
WOODLAND BLUEGRASS |
| Podophyllum peltatum |
MAYAPPLE |
| Polanisia dodecandra |
CLAMMYWEED |
| Polygala polygama obtusata |
PURPLE MILKWORT |
| Polygala sanguinea |
FIELD MILKWORT |
| Polygala verticillata |
WHORLED MILKWORT |
| Polygonatum commutatum |
GREAT SOLOMON SEAL |
| Polygonum amphibium |
WATER SMARTWEED |
| Polygonum arenastrum |
KNOTWEED |
| Polygonum hydropiperoides |
MILD WATER PEPPER |
| Polygonum pensylvanicum laevigatum |
PENNSYLVANIA SMARTWEED |
| Polygonum punctatum |
DOTTED SMARTWEED |
| Polygonum ramosissimum |
BUSHY KNOTWEED |
| Polygonum scandens |
CLIMBING BUCKWHEAT |
| Polygonum tenue |
SLENDER KNOTWEED |
| Populus deltoides |
EASTERN COTTONWOOD |
| Populus tremuloides |
QUAKING ASPEN |
| Portulaca oleracea |
PURSLANE |
| Potamogeton crispus |
BEGINNER'S PONDWEED |
| Potamogeton foliosus |
LEAFY PONDWEED |
| Potamogeton nodosus |
AMERICAN PONDWEED |
| Potamogeton pectinatus |
COMB PONDWEED |
| Potamogeton pusillus |
BABY PONDWEED |
| Potentilla arguta |
PRAIRIE CINQUEFOIL |
| Potentilla norvegica |
ROUGH CINQUEFOIL |
| Potentilla recta |
SULFUR CINQUEFOIL |
| Potentilla simplex |
COMMON CINQUEFOIL |
| Proboscidea louisianica |
DEVILSCLAW |
| Prunella vulgaris elongata |
SELF-HEAL |
| Prunus americana |
AMERICAN PLUM |
| Prunus americana lanata |
WILD PLUM |
| Prunus serotina |
WILD BLACK CHERRY |
| Prunus virginiana |
COMMON CHOKECHERRY |
| Pycnanthemum pilosum |
HAIRY MOUNTAIN MINT |
| Pycnanthemum tenuifolium |
SLENDER MOUNTAIN MINT |
| Quercus alba |
WHITE OAK |
| Quercus macrocarpa |
BURR OAK |
| Quercus marilandica |
BLACKJACK OAK |
| Quercus palustris |
PIN OAK |
| Quercus prinoides acuminata |
CHINKAPIN OAK |
| Quercus velutina |
BLACK OAK |
| Ranunculus abortivus |
LITTLE-LEAF BUTTERCUP |
| Ranunculus fascicularis |
EARLY BUTTERCUP |
| Ranunculus septentrionalis |
SWAMP BUTTERCUP |
| Ratibida pinnata |
DROOPING CONEFLOWER |
| Rhus aromatica |
AROMATIC SUMAC |
| Rhus aromatica arenaria |
BEACH SUMAC |
| Rhus glabra |
SMOOTH SUMAC |
| Ribes missouriense |
MISSOURI GOOSEBERRY |
| Ribes odoratum |
BUFFALO CURRENT |
| Robinia pseudoacacia |
BLACK LOCUST |
| Rorippa islandica fernaldiana |
MARSH YELLOW CRESS |
| Rorippa sessiliflora |
SESSILE-FLOWERED CRESS |
| Rorippa sylvestris |
CREEPING YELLOW CRESS |
| Rosa carolina |
PASTURE ROSE |
| Rosa suffulta |
SUNSHINE ROSE |
| Rubus argutus |
HIGHBUSH BLACKBERRY |
| Rubus flagellaris |
DEWBERRY |
| Rubus pensylvanicus |
BLACKBERRY |
| Rudbeckia hirta |
BLACK-EYED SUSAN |
| Rudbeckia laciniata |
CUTLEAF CONEFLOWER |
| Rudbeckia subtomentosa |
FRAGRANT CONEFLOWER |
| Ruellia humilis |
HAIRY RUELLIA |
| Ruellia strepens |
SMOOTH RUELLIA |
| Rumex acetosella |
COMMON SORREL |
| Rumex altissimus |
PALE DOCK |
| Rumex crispus |
CURLY DOCK |
| Rumex verticillatus |
SWAMP DOCK |
| Salix exigua |
SANDBAR WILLOW |
| Salix humilis |
PRAIRIE WILLOW |
| Salix nigra |
BLACK WILLOW |
| Sambucus canadensis |
COMMON ELDER |
| Sanicula canadensis |
CANADIAN BLACK SNAKEROOT |
| Saponaria officinalis |
BOUNCING BET |
| Schizachyrium scoparium |
LITTLE BLUESTEM |
| Scirpus atrovirens |
DARK GREEN RUSH |
| Scirpus tabernaemontanii |
GREAT BULRUSH |
| Scrophularia marilandica |
LATE FIGWORT |
| Scutellaria lateriflora |
MAD-DOG SKULLCAP |
| Scutellaria ovata |
HEART-LEAVED SKULLCAP |
| Secale cereale |
RYE |
| Senecio pauperculus |
BALSAM GROUNDSEL |
| Senecio plattensis |
PRAIRIE GROUNDSEL |
| Setaria faberi |
GIANT FOXTAIL |
| Setaria glauca |
PIGEON GRASS |
| Setaria viridis |
COMMON FOXTAIL |
| Sicyos angulatus |
BUR CUCUMBER |
| Sida spinosa |
PRICKLY SIDA |
| Silene stellata |
STARRY CAMPION |
| Silphium integrifolium |
WHOLELEAF ROSINWEED |
| Silphium laciniatum |
COMPASS-PLANT |
| Silphium perfoliatum |
CUP PLANT |
| Sisymbrium altissimum |
TUMBLE MUSTARD |
| Sisymbrium officinale |
HEDGE MUSTARD |
| Sisyrinchium campestre |
PRAIRIE BLUE-EYED GRASS |
| Smilacina racemosa |
FALSE SOLOMON SEAL |
| Smilax hispida |
BRISTLY GREENBRIER |
| Smilax lasioneuron |
COMMON CARRION FLOWER |
| Solanum carolinense |
HORSE-NETTLE |
| Solanum cornutum |
BUFFALO-BUR |
| Solanum ptycanthum |
BLACK NIGHTSHADE |
| Solidago canadensis |
CANADA GOLDENROD |
| Solidago gigantea |
LATE GOLDENROD |
| Solidago juncea |
EARLY GOLDENROD |
| Solidago nemoralis |
DYERSWEED GOLDENROD |
| Solidago rigida |
RIGID GOLDENROD |
| Solidago speciosa |
SHOWY GOLDENROD |
| Sorghastrum nutans |
INDIAN GRASS |
| Sorghum bicolor |
BROOM CORN |
| Spartina pectinata |
FRESHWATER CORD GRASS |
| Sphenopholis obtusata major |
WEDGE GRASS |
| Spirodela polyrhiza |
BIG DUCKWEED |
| Sporobolus asper |
DROP SEED |
| Sporobolus cryptandrus |
SAND DROPSEED |
| Stachys aspera |
HYSSOP HEDGE NETTLE |
| Stachys palustris homotricha |
WOUNDWORT |
| Stachys tenuifolia |
SLENDERLEAF BETONY |
| Staphylea trifolia |
BLADDERNUT |
| Stellaria media |
COMMON CHICKWEED |
| Stipa spartea |
NEEDLE GRASS |
| Strophostyles helvola |
WILD BEAN |
| Talinum rugospermum |
FLOWER-OF-AN-HOUR |
| Taraxacum laevigatum |
RED-SEEDED DANDELION |
| Taraxacum officinale |
COMMON DANDELION |
| Tephrosia virginiana |
GOAT'S RUE |
| Teucrium canadense virginicum |
AMERICAN GERMANDER |
| Thalictrum dasycarpum |
PURPLE MEADOW RUE |
| Thalictrum dasycarpum hypoglaucum |
MEADOW RUE |
| Thalictrum thalictroides |
RUE ANEMONE |
| Tilia americana |
AMERICAN LINDEN |
| Toxicodendron radicans |
POISON IVY |
| Tradescantia ohiensis |
SPIDERWORT |
| Tragopogon dubius |
GOAT'S BEARD |
| Tragopogon porrifolius |
VEGETABLE OYSTER SALSIFY |
| Tribulus terrestris |
PUNCTURE-WEED |
| Tridens flavus |
FALSE RED TOP |
| Trifolium hybridum |
ALSIKE CLOVER |
| Trifolium pratense |
RED CLOVER |
| Trifolium repens |
WHITE CLOVER |
| Trillium flexipes |
DECLINED TRILLIUM |
| Trillium recurvatum |
RED TRILLIUM |
| Typha latifolia |
CATTAIL |
| Ulmus americana |
AMERICAN ELM |
| Ulmus rubra |
SLIPPERY ELM |
| Urtica dioica |
STINGING NETTLE |
| Uvularia grandiflora |
BIG MERRY BELLS |
| Verbascum thapsus |
WOOLLY MULLEIN |
| Verbena bracteata |
CREEEPING VERVAIN |
| Verbena hastata |
BLUE VERVAIN |
| Verbena stricta |
HOARY VERVAIN |
| Verbena urticifolia |
WHITE VERVIAN |
| Vernonia fasciculata |
COMMON IRONWEED |
| Veronica arvensis |
CORN SPEEDWELL |
| Veronica peregrina |
PURSLANE SPEEDWELL |
| Veronicastrum virginicum |
CULVER'S ROOT |
| Vicia villosa |
WINTER VETCH |
| Viola missouriensis |
MISSOURI VIOLET |
| Viola pedata |
BIRDFOOT VIOLET |
| Viola pedatifida |
PRAIRIE VIOLET |
| Viola pubescens eriocarpa |
SMOOTH YELLOW VIOLET |
| Viola rafinesquii |
JOHNNY-JUMP-UP |
| Viola sororia |
WOOLLY BLUE VIOLET |
| Vitis cinerea |
WINTER GRAPE |
| Vitis riparia |
RIVERVBANK GRAPE |
| Vitis vulpina |
FROST GRAPE |
| Vulpia octoflora |
SIX-WEEKS FESCUE |
| Wolffia columbiana |
COMMON WATERMEAL |
| Woodsia obtusa |
COMMON WOODSIA |
| Xanthium strumarium canadensis |
COCKLE BUR |
| Xanthium strumarium glabratum |
COCKLE BUR |
| Zanthoxylum americanum |
PRICKLY ASH |
| Zizia aurea |
GOLDEN ALEXANDERS |