1,147 records for CASS County Abutilon theophrastii BUTTONWEED Acalypha gracilens SLENDER THREE-SEEDED MERCURY Acalypha rhomboidea THREE-SEEDED MERCURY Acalypha virginica THREE-SEEDED MERCURY Acer negundo ASH-LEAVED MAPLE Acer saccharinum RIVER MAPLE Acer saccharum HARD MAPLE Achillea millefolium COMMON MILFOIL Acorus americanus FLAG ROOT Actaea pachypoda DOLL'S-EYES Adiantum pedatum MAIDENHAIR FERN Aesculus glabra OHIO BUCKEYE Agalinis aspera ROUGH FALSE FOXGLOVE Agalinis purpurea FALSE FOXGLOVE Agalinis tenuifolia SLENDER FALSE FOXGLOVE Agastache nepetoides YELLOW GIANT HYSSOP Agastache scrophulariaefolia PURPLE GIANT HYSSOP Agrimonia gryposepala TALL AGRIMONY Agrimonia parviflora SWAMP AGRIMONY Agrimonia pubescens SOFT AGRIMONY Agropyron repens COUCH GRASS Agropyron smithii COLORADO BLUESTEM Agrostemma githago CORN COCKLE Agrostis alba RED TOP Agrostis hyemalis HAIR GRASS Agrostis perennans AUTUMN BENT GRASS Ailanthus altissima TREE-OF-HEAVEN Alcea rosea HOLLYHOCK Alisma plantago aquatica parviflorum COMMON WATER PLANTAIN Allium canadense WILD GARLIC Allium tricoccum RAMP Allium vineale FIELD GARLIC Alopecurus carolinianus ANNUAL FOXTAIL Amaranthus graecizans PROSTRATE AMARANTH Amaranthus hybridus GREEN AMARANTH Amaranthus palmeri PALMER'S AMARANTH Amaranthus powellii SMOOTH PIGWEED Amaranthus retroflexus ROUGH PIGWEED Amaranthus rudis TAMARISK WATERHEMP Amaranthus spinosus SPINY PIGWEED Amaranthus tuberculatus TALL WATERHEMP Ambrosia artemisiifolia BITTERWEED Ambrosia psilostachya WESTERN RAGWEED Ambrosia trifida BUFFALO WEED Ammannia auriculata SCARLET LOOSESTRIFE Ammannia coccinea LONG-LEAVED AMMANNIA Amorpha canescens LEAD PLANT Amorpha fruticosa FALSE INDIGO BUSH Ampelopsis cordata RACCOON GRAPE Amphicarpa bracteata HOG PEANUT Amphicarpa bracteata comosa HOG PEANUT Amsinckia lycopsoides TARWEED Amsonia tabernaemontana BLUE STAR Anagallis arvensis POOR MAN'S WEATHERGLASS Andropogon gerardii BIG BLUESTEM Andropogon virginicus BROOM SEDGE Androsace occidentalis ANDROSACE Anemone canadensis MEADOW ANEMONE Anemone caroliniana CAROLINA ANEMONE Anemone cylindrica CANDLE ANEMONE Anemone virginiana TALL ANEMONE Anethum graveolens DILL Antennaria neglecta CAT'S FOOT Antennaria plantaginifolia EVERLASTING Anthemis arvensis CORN CHAMOMILE Anthemis cotula DOG FENNEL Apios americana GROUNDNUT Aplectrum hyemale ADAM-AND-EVE Apocynum androsaemifolium SPREADING DOGBANE Apocynum cannabinum DOGBANE Aquilegia canadensis COLUMBINE Arabis canadensis SICKLEPOD Arabis shortii TOOTHED CRESS Aralia racemosa AMERICAN SPIKENARD Arctium minus COMMON BURDOCK Arctium tomentosum COTTON BURDOCK Arenaria serpyllifolia THYME-LEAVED SANDWORT Arisaema dracontium GREEN DRAGON Arisaema triphyllum INDIAN TURNIP Aristida basiramea FORKED-TIP THREE-AWN GRASS Aristida curtissii CURTISS THREE AWN GRASS Aristida desmantha THREE AWN Aristida dichotoma POVERTY GRASS Aristida longespica THREE AWN Aristida oligantha PLAINS THREE AWN GRASS Aristida purpurascens ARROWFEATHER Aristida tuberculosa BEACH THREE AWN GRASS Armoracia aquatica LAKE CRESS Armoracia rusticana HORSERADISH Artemisia absinthium ABSINTH Artemisia annua ANNUAL WORMWOOD Artemisia campestris BEACH WORMWOOD Artemisia dracunculus FALSE TARRAGON Artemisia ludoviciana gnaphalodes Artemisia pontica ROMAN WORMWOOD Aruncus dioicus GOAT'S-BEARD Asarum canadense reflexum CANADA WILD GINGER Asclepias amplexicaulis SAND MILKWEED Asclepias hirtella TALL GREEN MILKWEED Asclepias incarnata SWAMP MILKWEED Asclepias purpurascens PURPLE MILKWEED Asclepias quadrifolia WHORLED MILKWEED Asclepias sullivantii PRAIRIE MILKWEED Asclepias syriaca COMMON MILKWEED Asclepias tuberosa interior BUTTERFLYWEED Asclepias verticillata HORSETAIL MILKWEED Asclepias viridiflora GREEN MILKWEED Asimina triloba BANANA TREE Asparagus officinalis GARDEN ASPARAGUS Asplenium platyneuron EBONY SPLEENWORT Aster azureus AZURE ASTER Aster cordifolius BLUEWOOD ASTER Aster drummondii DRUMMOND'S ASTER Aster ericoides HEATH ASTER Aster ericoides prostratus HEATH ASTER Aster lateriflorus SIDE-FLOWERED ASTER Aster linariifolius FLAX-LEAVED ASTER Aster oblongifolius AROMATIC ASTER Aster ontarionis ONTARIO ASTER Aster pilosus HAIRY ASTER Aster praealtus WILLOW-LEAVED ASTER Aster sagittifolius ARROW ASTER Aster sericeus SILKY ASTER Aster turbinellus ASTER Aster umbellatus FLATTOP ASTER Aster vimineus FROST FLOWER Astragalus canadensis CANADIAN MILK VETCH Astragalus distortus BENT MILK VETCH Athyrium angustum LADY FERN Athyrium pycnocarpon GLADE FERN Athyrium thelypterioides SILVERY SPLEENWORT Atriplex patula FAT-HEN SALTBUSH Aureolaria grandiflora pulchra YELLOW FALSE FOXGLOVE Avena sativa CULTIVATED OATS Azolla mexicana MEXICAN AZOLLA Bacopa rotundifolia WATER HYSSOP Baptisia lactea WHITE WILD INDIGO Baptisia leucophaea CREAM WILD INDIGO Barbarea vulgaris arcuata WINTER CRESS Belamcanda chinensis BLACKBERRY LILLY Berberis thunbergii JAPANESE BARBERRY 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 frondosa COMMON BEGGAR-TICKS Bidens tripartita BEGGARTICK Blephilia ciliata PAGODA PLANT Blephilia ciliata PAGODA PLANT Blephilia hirsuta PAGODA PLANT Boehmeria cylindrica FALSE NETTLE Boltonia asteroides FALSE ASTER Boltonia decurrens FALSE ASTER Botrychium dissectum BRONZE FERN Botrychium dissectum obliquum BRONZE FERN Botrychium virginianum RATTLESNAKE FERN Bouteloua curtipendula MESQUITE GRASS Bouteloua hirsuta BLACK GRAMMA Brachyelytrum erectum LONG-AWNED WOOD GRASS Brasenia schreberi WATERSHIELD Brassica juncea CHINESE MUSTARD Brassica kaber pinnatifida CHARLOCK Brassica nigra BLACK MUSTARD Brassica rapa BIRD'S RAPE Brickellia eupatorioides FALSE BONESET Bromus ciliatus CANADA BROME GRASS Bromus commutatus HAIRY BROME Bromus inermis AWNLESS BROME GRASS Bromus japonicus JAPANESE BROME Bromus purgans BROME GRASS Bromus racemosus BALD BROME Bromus secalinus CHEAT Bromus tectorum CHEAT GRASS BROME Buchnera americana BLUE HEARTS Buglossoides arvense CORN GROMWELL Bulbostylis capillaris HAIR SEDGE Cacalia atriplicifolia PALE INDIAN PLANTAIN Calamagrostis canadensis BLUEJOINT GRASS Calamovilfa longifolia SAND REED Callirhoe alcaeoides POPPY MALLOW Callirhoe triangulata POPPY MALLOW Callitriche heterophylla LARGE WATER STARWORT Callitriche verna COMMON WATER STARWORT Caltha palustris COWSLIP Calystegia sepium americana AMERICAN BINDWEED Camelina microcarpa FALSE FLAX Camelina sativa FALSE FLAX Campanula americana AMERICAN BELLFLOWER Campanula aparinoides MARSH BELLFLOWER Campsis radicans TRUMPET CREEPER Cannabis sativa HASHISH Capsella bursa-pastoris SHEPERD'S-PURSE Cardamine bulbosa BULB BITTERCRESS Cardamine parviflora arenicola SMALL-FLOWERED BITTER CRESS Cardamine pensylvanica BITTER CRESS Cardiospermum halicacabum BALLOON-VINE Carex albolutescens SEDGE Carex annectens Carex artitecta SEDGE Carex bicknellii BICKNELL SEDGE Carex blanda WOODLAND SEDGE Carex brevior FESCUE SEDGE Carex cephalophora Carex comosa BRISTLY SEDGE Carex conjuncta Carex convoluta Carex cristatella SEDGE Carex crus-corvi SEDGE Carex emoryi EMORY SEDGE Carex festucacea SEDGE Carex frankii SEDGE Carex gracilescens SEDGE Carex granularis MEADOW SEDGE Carex gravida HEAVY SEDGE Carex grayi BUR SEDGE Carex grisea SEDGE Carex haydenii HAYDEN SEDGE Carex hystricina BOTTLEBRUSH SEDGE Carex jamesii GRASS SEDGE Carex lacustris RIVER SEDGE Carex laeviconica SEDGE Carex lanuginosa WOOLY SEDGE Carex lupuliformis SEDGE Carex lupulina HOP SEDGE Carex lurida SEDGE Carex meadii MEAD SEDGE Carex muhlenbergii Carex muskingumensis SEDGE Carex normalis SEDGE Carex pensylvanica PENNSYLVANIA SEDGE Carex richardsonii RICHARDSON SEDGE Carex rosea Carex scoparia BROOM SEDGE Carex shortiana SEDGE Carex sparganioides Carex stipata PRICKLY SEDGE Carex swanii SAVANNA SEDGE Carex tenera SEDGE Carex tetanica SEDGE Carex texensis SEDGE Carex tribuloides SEDGE Carex umbellata SEDGE Carex vulpinoidea FOX SEDGE Carpinus caroliniana AMERICAN HORNBEAM Carya cordiformis BITTERNUT HICKORY Carya glabra PIGNUT HICKORY Carya illinoensis PECAN Carya ovalis FALSE SHAGBARK HICKORY Carya ovata SCALY-BARK HICKORY Carya texana BLACK HICKORY Carya tomentosa MOCKERNUT HICKORY Cassia fasciculata GOLDEN CASSIA Cassia marilandica MARYLAND SENNA Cassia nictitans WILD SENSITIVE PLANT Castilleja coccinea INDIAN PAINTBRUSH Catalpa speciosa CIGAR TREE Caulophyllum thalictroides BLUE COHOSH Ceanothus americanus NEW JERSEY TEA Celastrus scandens BITTERSWEET Celtis occidentalis canina HACKBERRY Cenchrus longispinus MAT SANDBUR Centaurea cyanus BACHELOR'S BUTTON Cephalanthus occidentalis BUTTONBUSH Cerastium glomeratum CLAMMY CHICKWEED Cerastium nutans NODDING MOUSE-EAR CHICKWEED Cerastium pumilum MOUSE-EAR CHICKWEED Cerastium vulgatum COMMON MOUSE-EAR CHICKWEED Ceratophyllum demersum COONTAIL Cercis canadensis EASTERN REDBUD Chaenorrhinum minus DWARF SNAPDRAGON Chaerophyllum procumbens WILD CHERVIL Chamaesyce geyeri SPURGE Chamaesyce humistrata MILK SPURGE Chamaesyce maculata NODDING SPURGE Chamaesyce supina MILK SPURGE Chelone glabra WHITE TURTLEHEAD Chenopodium album LAMB'S QUARTERS Chenopodium ambrosioides AMERICAN WORMSEED Chenopodium desiccatum leptophylloides NARROW-LEAVED GOOSEFOOT Chenopodium gigantospermum MAPLE-LEAVED GOOSEFOOT Chloris verticillata WINDMILL GRASS Cichorium intybus BLUE SAILORS Cicuta maculata WATER HEMLOCK Cinna arundinacea STOUTWOOD REED Circaea lutetiana canadensis ENCHANTER'S NIGHTSHADE Cirsium altissimum TALL THISTLE Cirsium arvense CANADA THISTLE Cirsium discolor FIELD THISTLE Cirsium pumilum HILL'S THISTLE Cirsium vulgare BULL THISTLE Claytonia virginica SPRING BEAUTY Clematis pitcheri LEATHER FLOWER Clematis virginiana VIRGIN'S BOWER Comandra umbellata BASTARD TOAD-FLAX Commelina communis COMMON DAY FLOWER Commelina erecta DAY FLOWER Conium maculatum POISON HEMLOCK Consolida ambigua ROCKET LARKSPUR Convolvulus arvensis FIELD BINDWEED Conyza canadensis HORSEWEED Conyza ramosissima DWARF FLEABANE Corallorhiza odontorhiza FALL CORAL-ROOT ORCHID Corallorhiza wisteriana CORAL ROOT Coreopsis lanceolata LANCE COREOPSIS Coreopsis palmata PRAIRIE COREOPSIS Coreopsis tripteris TALL COREOPSIS Cornus drummondii ROUGH-LEAVED DOGWOOD Cornus florida FLOWERING DOGWOOD Cornus obliqua PALE DOGWOOD Cornus racemosa GRAY DOGWOOD Cornus stolonifera RED OSIER DOGWOOD Coronilla varia CROWN VETCH Corydalis aurea occidentalis CORYDALIS Corydalis curvisiliqua grandibracteata Corydalis flavula PALE CORYDALIS Corydalis micrantha SLENDER CORYDALIS Corylus americana AMERICAN FILBERT Crataegus crus-galli COCK-SPUR THORN Crataegus mollis RED HAW Crotalaria sagittalis RATTLEBOX Croton capitatus CAPITATE CROTON Croton glandulosus septentrionalis SAND CROTON Croton monanthogynus CROTON Crotonopsis linearis RUSHFOIL Cryptotaenia canadensis HONEWORT Cucurbita foetidissima MISSOURI GOURD Cucurbita pepo ovifera PEAR GOURD Cuphea viscosissima BLUE WAXWEED Cuscuta campestris DODDER Cuscuta cephalanthi BUTTONBUSH DODDER Cuscuta coryli HAZEL DODDER Cuscuta gronovii DODDER Cuscuta pentagona DODDER Cycloloma atriplicifolium TUMBLE RINGWING Cynanchum laeve BLUE VINE Cynoglossum officinale COMMON HOUND'S TONGUE Cyperus acuminatus TAPERLEAF FLAT SEDGE Cyperus aristatus BEARDED FLAT SEDGE Cyperus erythrorhizos RED-ROOTED SEDGE Cyperus esculentus CHUFA Cyperus ferruginescens SLENDER FLATSEDGE Cyperus filiculmis FERN FLATSEDGE Cyperus filiculmis macilentus Cyperus flavescens Cyperus grayioides GALINGALE 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 Dasistoma macrophylla MULLEIN FOXGLOVE Datura innoxia ANGEL'S TRUMPET Datura stramonium JIMSONWEED Daucus carota QUEEN-ANNE'S-LACE Delphinium tricorne DWARF LARKSPUR Dentaria laciniata PEPPER-ROOT Descurainia pinnata brachycarpa TANSY MUSTARD Descurainia sophia FLIXWEED Desmanthus illinoensis ILLINOIS BUNDLEFLOWER Desmodium canadense SHOWY TICK TREFOIL Desmodium canescens HOARY TICK TREFOIL Desmodium cuspidatum TICK TREFOIL Desmodium cuspidatum longifolium TICK TREFOIL Desmodium glutinosum BEGGAR'S LICE Desmodium illinoense ILLINOIS TICK TREFOIL Desmodium nudiflorum BARE-STEMMED TICK TREFOIL Desmodium paniculatum PANICLED TICK TREFOIL Desmodium sessilifolium SESSILE-LEAVED TICKTREFOIL Dianthus armeria DEPTFORD PINK Diarrhena americana obovata BEAK GRASS Dicentra cucullaria DUTCHMAN'S-BREECHES Dichanthelium acuminatum fasciculatum PANIC GRASS Dichanthelium acuminatum lindheimeri PANIC GRASS Dichanthelium clandestinum BROAD-LEAVED PANIC GRASS Dichanthelium depauperatum STARVED PANIC GRASS Dichanthelium latifolium Dichanthelium oligosanthes Dichanthelium oligosanthes scribnerianum SCRIBNER'S PANIC GRASS Dichanthelium villosissimum HAIRY PANIC GRASS Dichanthelium villosissimum pseudopubesc Digitaria filiformis FINGER GRASS Digitaria ischaemum SMOOTH CRAB GRASS Digitaria sanguinalis HAIRY CRAB GRASS Diodia teres POORJOE Dioscorea villosa WILD YAM Diospyros virginiana PERSIMMON Dodecatheon meadia SHOOTING STAR Draba reptans WHITLOW GRASS Dracocephalum parviflorum AMERICAN DRAGONHEAD Dryopteris carthusiana SPINULOSE WOODFERN Dryopteris intermedia COMMON WOODFERN Dryopteris marginalis LEATHER FERN Dulichium arundinaceum POND SEDGE Dyssodia papposa FETID MARIGOLD Echinacea pallida PALE PURPLE CONEFLOWER Echinacea purpurea BROAD-LEAVED PURPLE CONEFLOWER Echinochloa muricata BARNYARD GRASS Echinochloa muricata wiegandii BARNYARD GRASS Echinochloa walteri SALT-MARSH COCKSPUR GRASS Echinocystis lobata WILD BALSAM-APPLE Echinodorus berteroi lanceolatus BURHEAD Echinodorus cordifolius CREEPING BURHEAD Echinodorus tenellus parvulus SMALL BURHEAD Eclipta prostrata YERBA DE TAJO Eleocharis acicularis NEEDLE SPIKE RUSH Eleocharis elliptica SPIKE RUSH Eleocharis elliptica compressa FLAT-STEMMED SPIKE RUSH Eleocharis erythropoda Eleocharis obtusa Eleocharis obtusa detonsa SPIKE RUSH Eleocharis obtusa ovata SPIKE RUSH Eleocharis palustris Eleocharis verrucosa SLENDER SPIKE RUSH Eleusine indica GOOSE GRASS Ellisia nyctelea AUNT LUCY Elodea canadensis ANACHARIS Elodea nuttallii ELODEA Elymus canadensis CANADA WILD RYE Elymus hystrix BOTTLEBRUSH GRASS Elymus villosus HAIRY WILD RYE Elymus virginicus LYME GRASS Epilobium coloratum CINNAMON WILLOW HERB Epilobium leptophyllum BOG WILLOW HERB Equisetum X ferrissii INTERMEDIATE SCOURING RUSH Equisetum arvense COMMON HORSETAIL Equisetum fluviatile WATER HORSETAIL Equisetum hyemale affine SCOURING RUSH Equisetum laevigatum SMOOTH SCOURING RUSH Eragrostis cilianensis STINK GRASS Eragrostis frankii SANDBAR LOVE GRASS Eragrostis hypnoides CREEPING LOVE GRASS Eragrostis minor LOVE GRASS Eragrostis pectinacea CAROLINA LOVE GRASS Eragrostis spectabilis PURPLE LOVE GRASS Eragrostis trichodes ICE CREAM GRASS Eragrostis trichodes pilifera THREAD LOVE GRASS Erechtites hieracifolia FIRE WEED Erigeron annuus ANNUAL FLEABANE Erigeron philadelphicus MARSH FLEABANE Erigeron pulchellus ROBIN'S PLANTAIN Erigeron strigosus DAISY FLEABANE Eriophila verna MOUSE-EARED WHITLOW GRASS Eriophorum tenellum COTTON SEDGE Erucastrum gallicum DOG MUSTARD Eryngium yuccifolium RATTLESNAKE MASTER Erysimum capitatum WESTERN WALLFLOWER Erysimum cheiranthoides WORMSEED MUSTARD Erysimum repandum TREACLE MUSTARD Erythronium albidum WHITE ADDER'S TONGUE Euonymus alatus BURNING BUSH Euonymus atropurpureus BURNING BUSH Eupatorium altissimum TALL BONESET Eupatorium coelestinum BLUE BONSET Eupatorium maculatum SPOTTED JOE PYE WEED Eupatorium perfoliatum COMMON BONESET Eupatorium purpureum GREEN-STEMMED JOE-PYE WEED Eupatorium rugosum WHITE SNAKEROOT Eupatorium serotinum LATE BONESET Euphorbia corollata FLOWERING SPURGE Euphorbia marginata SNOW-ON-THE-MOUNTAIN Euthamia graminifolia GRASSLEAF GOLDENROD Euthamia gymnospermoides GRASSLEAF GOLDENROD Festuca obtusa NODDING FESCUE Festuca pratensis ENGLISH BLUEGRASS Festuca rubra RED FESCUE Filipendula rubra QUEEN OF THE PRAIRIE Fimbristylis autumnalis AUTUMN SEDGE Fimbristylis vahlii VAHL'S FIMBRISTYLIS Forestiera acuminata SWAMP PRIVET Fragaria virginiana WILD STRAWBERRY Fraxinus americana WHITE ASH Fraxinus nigra BLACK ASH Fraxinus pennsylvanica GREEN ASH Froelichia floridana campestris COTTONWEED Froelichia gracilis COTTONWEED Gaillardia pulchella FIREWHEELS Galearis spectabilis SHOWY ORCHIS Galinsoga parviflora LITTLE FLOWER QUICKWEED Galinsoga quadriradiata PERUVIAN DAISY Galium aparine ANNUAL BEDSTRAW Galium circaezans WILD LICORICE Galium concinnum SHINING BEDSTRAW Galium obtusum WILD MADDER Galium pilosum HAIRY BEDSTRAW Galium triflorum SWEET-SCENTED BEDSTRAW Gaura biennis BUTTERFLY-WEED Gaura longiflora Gaura parviflora SMALL-FLOWERED GAURA Gaylussacia baccata BLACK HUCKLEBERRY Gentiana alba PALE GENTIAN Gentiana andrewsii CLOSED GENTIAN Gentiana puberulenta DOWNY GENTIAN Gentianella quinquefolia occidentalis STIFF GENTIAN Geranium carolinianum WILD CRANESBILL Geranium maculatum WILD GERANIUM Geum canadense WHITE AVENS Geum laciniatum ROUGH AVENS Glandularia canadensis ROSE VERBENA Glechoma hederacea micrantha GROUND IVY Gleditsia triacanthos HONEY LOCUST Glyceria septentrionalis FLOATING MANNA GRASS Glyceria striata FOWL MANNA GRASS Glycine max SOYBEAN Gnaphalium obtusifolium CATFOOT Gnaphalium purpureum EARLY CUDWEED Gratiola neglecta CLAMMY HEDGE HYSSOP Gratiola virginiana ROUND-FRUITED HEDGE HYSSOP Grindelia squarrosa CURLYCUP GUMWEED Gymnocladus dioicus KENTUCKY COFFEETREE Hackelia virginiana STICKSEED Hedeoma hispida ROUGH PENNYROYAL Hedeoma pulegioides AMERICAN PENNYROYAL Helenium autumnale AUTUMN SNEEZEWEED Helenium flexuosum PURPLE-HEADED SNEEZEWEED Helianthemum bicknellii FROSTWEED Helianthemum canadense COMMON ROCKROSE Helianthus annuus COMMON SUNFLOWER Helianthus divaricatus DIVERGENT SUNFLOWER Helianthus grosseserratus SAWTOOTH SUNFLOWER Helianthus hirsutus BRISTLY SUNFLOWER Helianthus mollis ASHY 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 Hemerocallis fulva DAY LILY Hepatica nobilis acuta SHARP-LOBED HEPATICA Heracleum lanatum COW PARSNIP Hesperis matronalis DAME'S ROCKET Heteranthera limosa DUCKSALAD Heterotheca camporum GOLDEN ASTER Heuchera americana hirsuticaulis TALL ALUMROOT Heuchera richardsonii grayana PRAIRIE ALUMROOT Hibiscus laevis HALBERD-LEAVED ROSE MALLOW Hibiscus trionum FLOWER-OF-AN-HOUR Hieracium gronovii HAIRY HAWKWEED Hieracium longipilum HAIRY HAWKWEED Hieracium scabrum HAIRY HAWKWEED Holosteum umbellatum JAGGED CHICKWEED Hordeum jubatum FOX-TAIL BARLEY Hordeum pusillum LITTLE BARLEY Humulus japonicus JAPANESE HOPS Humulus lupulus COMMON HOPS Hydrastis canadensis GOLDEN SEAL Hydrophyllum virginianum VIRGINIA WATERLEAF Hymenopappus scabiosaeus OLD PLAINSMAN Hypericum gentianoides PINEWEED Hypericum gymnanthum SMALL ST. JOHNS-WORT Hypericum majus ST. JOHNS-WORT Hypericum mutilum DWARF ST. JOHNS-WORT Hypericum perforatum COMMON ST. JOHNS-WORT Hypericum punctatum SPOTTED ST. JOHNS-WORT Hypericum pyramidatum GIANT ST. JOHNS-WORT Hypericum sphaerocarpum ROUND-FRUITED ST. JOHNS-WORT Hypoxis hirsuta COMMON GOLDSTARGRASS Ilex decidua SWAMP HOLLY Impatiens capensis JEWELWEED Impatiens pallida PALE TOUCH-ME-NOT Iodanthus pinnatifidus PURPLE ROCKET Ipomoea hederacea IVY-LEAVED MORNING GLORY Ipomoea lacunosa SMALL WHITE MORNING-GLORY Ipomoea pandurata WILD SWEET POTATO VINE Iris brevicaulis BLUE WATER IRIS Iris pseudacorus WATER FLAG Iris shrevei SOUTHERN BLUE FLAG Isatis tinctoria DYER'S WOAD Isoetes melanopoda BLACK QUILLWORT Isopyrum biternatum FALSE RUE ANEMONE Iva annua MARSH ELDER Juglans cinerea BUTTERNUT Juglans nigra BLACK WALNUT Juncus acuminatus KNOTTY-LEAVED RUSH Juncus biflorus TWO-FLOWERED RUSH Juncus brachycarpus RUSH Juncus bufonius TOAD RUSH Juncus canadensis CANADIAN RUSH Juncus dudleyi DUDLEY RUSH Juncus interior INLAND RUSH Juncus marginatus GRASS-LEAVED RUSH Juncus scirpoides RUSH Juncus tenuis PATH RUSH Juncus torreyi TORREY RUSH Juniperus virginiana EASTERN RED CEDAR Kochia scoparia BELVEDERE SUMMER CYPRESS Koeleria macrantha CRESTED HAIR GRASS Krigia biflora FALSE DANDELOIN Krigia virginica DWARF DANDELION Kummerowia stipulacea KOREAN CLOVER Kummerowia striata JAPANESE LESPEDEZA Lactuca floridana BLUE LETTUCE Lactuca saligna WILLOW-LEAVED LETTUCE Lactuca serriola COMPASS PLANT Lamium amplexicaule HENBIT Lamium purpureum PURPLE DEAD NETTLE Laportea canadensis CANADA WOOD NETTLE Lappula echinata BEGGAR'S LICE Lathyrus latifolius EVERLASTING PEA Lathyrus palustris MARSH PEAVINE Lechea stricta PINWEED Lechea tenuifolia NARROW-LEAVED PINWEED Lechea villosa HAIRY PINWEED Leersia lenticularis CATCHFLY GRASS Leersia oryzoides RICE CUTGRASS Leersia virginica WHITE GRASS Lemna minor COMMON DUCKWEED Lemna obscura DUCKWEEED Leonurus cardiaca MOTHERWORT Leonurus marrubiastrum LION'S-TAIL Lepidium campestre FIELD CRESS Lepidium densiflorum PEPPERGRASS Lepidium virginicum COMMON PEPPERGRASS Leptochloa fascicularis BEARDED SPRANGLE TOP Leptoloma cognatum FALL WITCH GRASS Lespedeza capitata BUSH CLOVER Lespedeza cuneata CHINESE BUSH CLOVER Lespedeza violacea VIOLET BUSH CLOVER Lespedeza virginica SLENDER BUSH CLOVER Leucanthemum vulgare COMMON TANSY Leucospora multifida Liatris aspera ROUGH BLAZING STAR Liatris cylindracea CYLINDRICAL BLAZING STAR Liatris pycnostachya BUTTON SNAKEROOT Liatris scariosa nieuwlandii BLAZING-STAR Liatris spicata BUTTON SNAKEROOT Ligustrum vulgare PRIVET Lilium michiganense MICHIGAN LILY Linaria canadensis BLUE TOADFLAX Linaria vulgaris BUTTER-AND-EGGS Lindernia dubia FALSE PIMPERNEL Lindernia dubia anagallidea SLENDER FALSE PIMPERNEL Linum medium texanum SMALL YELLOW FLAX Linum sulcatum GROOVED YELLOW FLAX Liparis liliifolia LARGE TWAYBLADE Liparis loeselii GREEN TWAYBLADE Lipocarpha maculata MOTTLED LIPOCARPHA Lithospermum canescens HOARY PUCCOON Lithospermum caroliniense HAIRY PUCCOON Lithospermum incisum YELLOW PUCCOON Lithospermum latifolium AMERICAN GROMWELL Lobelia cardinalis CARDINAL-FLOWER Lobelia inflata INDIAN TOBACCO Lobelia siphilitica BLUE CARDINAL-FLOWER Lobelia spicata SPIKED LOBELIA Lobelia spicata leptostachys SPIKED LOBELIA Lonicera japonica JAPANESE HONEYSUCKLE Lonicera prolifera GRAPE HONEYSUCKLE Lonicera tatarica TARTARIAN HONEYSUCKLE Lotus corniculatus BIRDSFOOT-TREFOIL Ludwigia alternifolia SEEDBOX Ludwigia decurrens ERECT PRIMROSE WILLOW Ludwigia palustris americana MARSH PURSLANE Ludwigia peploides glabrescens CREEPING PRIMROSE WILLOW Ludwigia polycarpa FALSE LOOSESTRIFE Lychnis alba EVENING CAMPION Lycium barbarum COMMON MATRIMONY VINE Lycopersicum esculentum TOMATO Lycopus americanus COMMON WATER HOREHOUND Lycopus uniflorus NOTHERN BUGLE WEED Lycopus virginicus BUGLE WEED Lysimachia ciliata FRINGED LOOSESTRIFE Lysimachia hybrida LOOSESTRIFE Lysimachia lanceolata LANCE-LEAVED LOOSESTRIFE Lysimachia nummularia MONEYWORT Lysimachia quadriflora NARROW-LEAVED LOOSESTRIFE Lysimachia thyrsiflora TUFTED LOOSESTRIFE Lythrum alatum WINGED LOOSESTRIFE Maclura pomifera HEDGE APPLE Malus ioensis IOWA CRAB APPLE Malus pumila APPLE Malva neglecta CHEESES Marrubium vulgare COMMON HOREHOUND Matricaria chamomilla GERMAN CHAMOMILE Matricaria matricarioides PINEAPPLE WEED Medicago lupulina BLACK MEDIC Medicago sativa ALFALFA Melica nitens THREE-FLOWERED MELIC GRASS Melilotus alba WHITE SWEET CLOVER Melilotus officinalis YELLOW SWEET CLOVER Menispermum canadense MOONSEED Mentha X piperita PEPPERMINT Mentha arvensis villosa FIELD MINT Mentha spicata SPEARMINT Mertensia virginica BLUEBELLS Mimulus alatus WINGED MONKEY FLOWER Mimulus ringens MONKEY FLOWER Mirabilis nyctaginea WILD FOUR-O'CLOCK Miscanthus sinensis CHINESE SILVER GRASS Mollugo verticillatus CARPETWEED Monarda clinopodia BEE BALM Monarda fistulosa WILD BERGAMOT Monarda punctata villicaulis HORSEMINT Monotropa uniflora INDIAN PIPE Morus alba WHITE MULBERRY Morus alba tatarica RUSSIAN MULBERRY Morus rubra RED MULBERRY Muhlenbergia asperifolia ALKALI MUHLY Muhlenbergia cuspidata PLAINS MUHLY Muhlenbergia frondosa COMMON SATIN GRASS Muhlenbergia mexicana LEAFY SATIN GRASS Muhlenbergia racemosa GREEN MUHLY Muhlenbergia schreberi NIMBLE WILL Muhlenbergia sobolifera MUHLY Muhlenbergia sylvatica MUHLY Myosotis stricta SMALL-FLOWERED FORGET-ME-NOT Myosotis verna SCORPION GRASS Myosurus minimus MOUSETAIL Myriophyllum pinnatum ROUGH WATER MILFOIL Najas guadalupensis SOUTHERN NAIAD Nelumbo lutea AMERICAN LOTUS Nepeta cataria CATNIP Nicandra physalodes APPLE-OF-PERU Nuphar luteum macrophyllum SPATTERDOCK Nymphaea tuberosa WHITE WATER LILY Oenothera biennis EVENING PRIMROSE Oenothera biennis canescens EVENING PRIMROSE Oenothera laciniata RAGGED EVENING PRIMROSE Oenothera rhombipetala SAND PRIMROSE Oenothera speciosa SHOWY EVENING PRIMROSE Onoclea sensibilis SENSITIVE FERN Onosmodium hispidissimum MARBLESEED Onosmodium molle occidentale MARBLESEED Opuntia humifusa PRICKLY-PEAR Ornithogalum umbellatum COMMON STAR-OF-BETHLEHEM Orobanche uniflora CANCER-ROOT Osmorhiza claytonii SWEET CICELY Osmorhiza longistylis ANISE-ROOT Osmunda claytoniana INTERRUPTED FERN Osmunda regalis spectabilis REGAL FERN Ostrya virginiana HOP HORNBEAM Oxalis dillenii YELLOW WOOD SORREL Oxalis stricta YELLOW WOOD SORREL Oxalis violacea PURPLE OXALIS Oxypolis rigidior COWBANE Panax quinquefolius GINSENG Panicum capillare WITCH GRASS Panicum rigidulum MUNRO GRASS Panicum virgatum PRAIRIE SWITCHGRASS Papaver dubium POPPY Parietaria pensylvanica PENNSYLVANIA PELLITORY Parnassia glauca GRASS-OF-PARNASSUS Paronychia canadensis FORKED CHICKWEED Paronychia fastigiata FORKED CHICKWEED Parthenocissus quinquefolia VIRGINIA CREEPER Paspalum bushii HAIRY BEAD GRASS Paspalum ciliatifolium BEADGRASS Paspalum fluitans SWAMP BEADGRASS Pastinaca sativa PARSNIP Pedicularis canadensis LOUSEWORT Pedicularis lanceolata SWAMP WOOD BETONY Peltandra virginica ARROW ARUM Penstemon digitalis FOXGLOVE BEARD-TONGUE Penstemon pallidus PALE BEARD-TONGUE Penthorum sedoides DITCH STONECROP Perideridia americana Perilla frutescens BEEFSTEAK PLANT Petunia axillaris WHITE PETUNIA Phalaris arundinacea REED CANARY GRASS Phalaris canariensis BIRDSEED GRASS Phegopteris connectilis LONG BEECH FERN Phegopteris hexagonoptera BROAD BEECH FERN Phleum pratense TIMOTHY Phlox bifida CLEFF PHLOX Phlox divaricata laphamii BLUE PHLOX Phlox glaberrima interior SMOOTH PHLOX Phlox paniculata GARDEN PHLOX Phragmites australis COMMON RED REED Phryma leptostachya LOPSEED Phyla lanceolata FOG-FRUIT Phyllanthus caroliniensis PHYLLANTHUS Physalis heterophylla GROUND CHERRY Physalis lanceolata NARROW-LEAVED GROUND CHERRY Physalis pruinosa GROUND CHERRY Physalis pubescens ANNUAL GROUND CHERRY Physalis subglabrata SMOOTH GROUND CHERRY Physalis virginiana GROUND CHERRY Physostegia angustifolia NARROW-LEAVED FALSE DRAGONHEAD Physostegia speciosa FALSE DRAGONHEAD Physostegia virginiana FALSE DRAGONHEAD Phytolacca americana POKEWEED Pilea pumila CANADA CLEARWEED Plantago aristata BRACTED PLANTAIN Plantago cordata HEARTLEAF PLANTAIN Plantago lanceolata BUCKHORN Plantago patagonica brevicarpa SALT AND PEPPER PLANT Plantago rugelii RED-STALKED PLANTAIN Plantago virginica DWARF PLANTAIN Platanthera clavellata GREEN ORCHID Platanthera flava herbiola TUBERCLED ORCHID Platanthera lacera GREEN FRINGED ORCHID Platanus occidentalis BUTTONWOOD Poa annua ANNUAL BLUEGRASS Poa chapmaniana ANNUAL BLUEGRASS Poa compressa CANADIAN BLUEGRASS Poa palustris FOWL BLUEGRASS Poa pratensis KENTUCKY BLUEGRASS Poa sylvestris WOODLAND BLUEGRASS Podophyllum peltatum MAYAPPLE Poinsettia cyanthophora WILD POINSETTIA Poinsettia dentata WILD POINSETTIA Polanisia dodecandra CLAMMYWEED Polygala incarnata PINK MILKWORT Polygala sanguinea FIELD MILKWORT Polygala senega SENECA SNAKEROOT Polygala verticillata WHORLED MILKWORT Polygonatum commutatum GREAT SOLOMON SEAL Polygonum achoreum LEATHERY KNOTWEED Polygonum amphibium WATER SMARTWEED Polygonum arenastrum KNOTWEED Polygonum buxiforme KNOTWEED Polygonum convolvulus BLACK BIRDWEED Polygonum cristatum COPSE BINDWEED Polygonum erectum ERECT KNOTWEED Polygonum hydropiper COMMON SMARTWEED Polygonum hydropiperoides MILD WATER PEPPER Polygonum lapathifolium CURTTOP LADY'S THUMB Polygonum pensylvanicum laevigatum PENNSYLVANIA SMARTWEED Polygonum persicaria SPOTTED LADY'S THUMB Polygonum punctatum DOTTED SMARTWEED Polygonum ramosissimum BUSHY KNOTWEED Polygonum sagittatum ARROWLEAF TEARTHUMB Polygonum scandens CLIMBING BUCKWHEAT Polygonum tenue SLENDER KNOTWEED Polygonum virginianum VIRGINIA KNOTWEED Polystichum acrostichoides CHRISTMAS FERN Pontederia cordata PICKERELWEED Populus alba WHITE POPLAR Portulaca grandiflora MOSS-ROSE Portulaca oleracea PURSLANE Potamogeton diversifolius WATERTHREAD PONDWEED Potamogeton foliosus LEAFY PONDWEED Potamogeton illinoensis ILLINOIS PONDWEED Potamogeton pectinatus COMB PONDWEED Potamogeton pusillus BABY PONDWEED Potentilla norvegica ROUGH CINQUEFOIL Potentilla recta SULFUR CINQUEFOIL Potentilla simplex COMMON CINQUEFOIL Prenanthes aspera ROUGH WHITE LETTUCE Proserpinaca palustris MERMAID-WEED Prunella vulgaris elongata SELF-HEAL Prunus americana AMERICAN PLUM Prunus americana lanata WILD PLUM Prunus hortulana WILD GOOSE PLUM Prunus mahaleb MAHALEB CHERRY Prunus persica PEACH Prunus serotina WILD BLACK CHERRY Psoralea tenuiflora SCURF-PEA Ptelea trifoliata WAFER ASH Pteridium aquilinum latiusculum BRACKEN FERN Pycnanthemum pilosum HAIRY MOUNTAIN MINT Pycnanthemum tenuifolium SLENDER MOUNTAIN MINT Pycnanthemum virginianum COMMON MOUNTAIN MINT Pyrrhopappus carolinianus FALSE DANDELION Pyrus communis PEAR Quercus alba WHITE OAK Quercus imbricaria JACK OAK Quercus macrocarpa BURR OAK Quercus marilandica BLACKJACK OAK Quercus michauxii BASKET OAK Quercus palustris PIN OAK Quercus prinoides acuminata CHINKAPIN OAK Quercus rubra NORTHERN RED OAK Quercus stellata POST OAK Quercus velutina BLACK OAK Ranunculus abortivus LITTLE-LEAF BUTTERCUP Ranunculus abortivus acrolasius SMALL-FLOWERED CROWFOOT Ranunculus fascicularis EARLY BUTTERCUP Ranunculus flabellaris YELLOW WATER BUTTERCUP Ranunculus longirostris LONGBEAK BUTTERCUP Ranunculus recurvatus HOOKED BUTTERCUP Ranunculus sceleratus CURSED CROWFOOT Ranunculus septentrionalis SWAMP BUTTERCUP Ranunculus trichophyllus WHITE WATER-CROWFOOT Raphanus raphanistrum JOINTED CHARLOCK Ratibida pinnata DROOPING CONEFLOWER Rhamnus frangula GLOSSY BUCKTHORN Rhamnus lanceolata LANCE-LEAVED BUCKTHORN Rhexia virginica MEADOW BEAUTY Rhus aromatica AROMATIC SUMAC Rhus aromatica arenaria BEACH SUMAC Rhus copallina DWARF SUMAC Rhus glabra SMOOTH SUMAC Rhus typhina STAGHORN SUMAC Ribes americanum WILD BLACK CURRENT 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 Rorippa truncata BLUNT-LEAVED YELLOW CRESS Rosa carolina PASTURE ROSE Rosa multiflora JAPANESE ROSE Rosa setigera ILLINOIS ROSE Rotala ramosior TOOTH-CUP Rubus allegheniensis COMMON BLACKBERRY Rubus flagellaris DEWBERRY Rubus frondosus BLACKBERRY Rubus idaeus CULTIVATED RASPBERRY Rubus pensylvanicus BLACKBERRY Rudbeckia hirta BLACK-EYED SUSAN Rudbeckia laciniata CUTLEAF CONEFLOWER Rudbeckia subtomentosa FRAGRANT CONEFLOWER Rudbeckia triloba BROWN-EYED SUSAN Ruellia humilis HAIRY RUELLIA Ruellia strepens SMOOTH RUELLIA Rumex acetosella COMMON SORREL Rumex altissimus PALE DOCK Rumex crispus CURLY DOCK Rumex mexicanus DOCK Rumex obtusifolius BITTER DOCK Rumex patientia PATIENCE DOCK Rumex verticillatus SWAMP DOCK Sabatia angularis MARSH PINK Sagittaria brevirostra ARROWLEAF Sagittaria calycina ARROWLEAF Sagittaria cuneata ARUM-LEAVED ARROWHEAD Sagittaria graminea GRASS-LEAVED ARROWHEAD Sagittaria latifolia ARROWHEAD Sagittaria rigida DEEP WATER DUCK POTATO Salix caroliniana CAROLINA WILLOW Salix discolor PUSSY WILLOW Salix exigua SANDBAR WILLOW Salix humilis PRAIRIE WILLOW Salix nigra BLACK WILLOW Salix rigida HEART-LEAVED WILLOW Salix sericea SILKY WILLOW Salsola iberica RUSSIAN THISTLE Salvia azurea grandiflora BLUE SAGE Salvia reflexa ROCKY MOUNTAIN SAGE Sambucus canadensis COMMON ELDER Samolus valerandii BROOKWEED Sanguinaria canadensis BLOODROOT Sanguisorba canadensis AMERICAN BURNET Sanicula canadensis CANADIAN BLACK SNAKEROOT Sanicula gregaria COMMON SNAKEROOT Saponaria officinalis BOUNCING BET Sassafras albidum RED SASSAFRAS Saururus cernuus LIZARD'S TAIL Saxifraga pensylvanica SWAMP SAXIFRAGE Schizachyrium scoparium LITTLE BLUESTEM Scirpus acutus GREAT BULRUSH Scirpus americanus AMERICAN BULRUSH Scirpus atrovirens DARK GREEN RUSH Scirpus cyperinus WOOL GRASS Scirpus fluviatilis RIVER BULRUSH Scirpus hallii BULRUSH Scirpus micranthus Scirpus pendulus RED BULRUSH Scirpus smithii BULRUSH Scirpus tabernaemontanii GREAT BULRUSH Scleria reticularis NETTED NUT RUSH Scleria triglomerata TALL NUT GRASS Scrophularia lanceolata EARLY FIGWORT Scrophularia marilandica LATE FIGWORT Scutellaria galericulata MARSH SKULLCAP Scutellaria incana DOWNY SKULLCAP Scutellaria lateriflora MAD-DOG SKULLCAP Scutellaria leonardii SMALL SKULLCAP Scutellaria ovata HEART-LEAVED SKULLCAP Scutellaria parvula SMALL SKULLCAP Secale cereale RYE Sedum purpureum LIVE-FOREVER Sedum ternatum THREE-LEAVED STONECROP Senecio aureus GOLDEN RAGWORT Senecio glabellus BUTTERWEED Senecio plattensis PRAIRIE GROUNDSEL Setaria faberi GIANT FOXTAIL Setaria geniculata PERENNIAL FOXTAIL Setaria glauca PIGEON GRASS Setaria italica FOXTAIL MILLET Setaria verticillata BRISTLY FOXTAIL Setaria viridis COMMON FOXTAIL Sicyos angulatus BUR CUCUMBER Sida spinosa PRICKLY SIDA Silene antirrhina SLEEPY CATCHFLY Silene cserei GLAUCOUS CAMPION Silene cucubalus BLACKLER CAMPION Silene dichotoma FORKED CATCHFLY Silene nivea SNOW CAMPION Silene noctiflora NIGHT-FLOWERING CATCHFLY Silene stellata STARRY CAMPION Silphium integrifolium WHOLELEAF ROSINWEED Silphium laciniatum COMPASS-PLANT Silphium perfoliatum CUP PLANT Silphium terebinthinaceum DOCK ROSIN-WEED Sisymbrium altissimum TUMBLE MUSTARD Sisymbrium loeselii TALL HEDGE MUSTARD Sisymbrium officinale HEDGE MUSTARD Sisyrinchium albidum BLUE-EYED GRASS Sisyrinchium campestre PRAIRIE BLUE-EYED GRASS Sium suave WATER PARSNIP Smilacina racemosa FALSE SOLOMON SEAL Smilacina stellata STARRY FALSE SOLOMON SEAL Smilax ecirrata UPRIGHT CARRION FLOWER 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 missouriensis MISSOURI GOLDENROD Solidago nemoralis DYERSWEED GOLDENROD Solidago patula ROUGH-LEAF GOLDENROD Solidago ptarmicoides STIFF ASTER Solidago rigida RIGID GOLDENROD Solidago speciosa SHOWY GOLDENROD Solidago uliginosa BOG GOLDENROD Solidago ulmifolia ELM-LEAVED GOLDENROD Sonchus asper PRICKLY SOWTHISTLE Sonchus oleraceus COMMON SOWTHISTLE Sorghastrum nutans INDIAN GRASS Sorghum bicolor BROOM CORN Sorghum halepense EGYPTIAN MILLET Sparganium eurycarpum BURREED Sparganium eurycarpum BURREED Spartina pectinata FRESHWATER CORD GRASS Spartina pectinata FRESHWATER CORD GRASS Spermacoce glabra SMOOTH BUTTONWEED Spermolepis inermis Sphenopholis obtusata PRAIRIE WEDGE GRASS Sphenopholis obtusata major WEDGE GRASS Spiraea alba MEADOW-SWEET Spiranthes cernua NODDING LADIES-TRESSES Spiranthes lacera SLENDER LADIES' TRESSES Spiranthes magnicamporum DUNE LADIES' TRESSES Spiranthes ovalis LADIES' TRESSES Spirodela polyrhiza BIG DUCKWEED Sporobolus asper DROP SEED Sporobolus clandestinus DROPSEED Sporobolus cryptandrus SAND DROPSEED Sporobolus heterolepis NORTHERN DROP SEED Sporobolus neglectus PUFFSHEATH DROPSEED Sporobolus vaginiflorus NORTHERN RUSH GRASS Stachys aspera HYSSOP HEDGE NETTLE Stachys palustris homotricha WOUNDWORT Stachys tenuifolia SLENDERLEAF BETONY Staphylea trifolia BLADDERNUT Stellaria graminea COMMON STICHWORT Stellaria media COMMON CHICKWEED Stipa spartea NEEDLE GRASS Strophostyles helvola WILD BEAN Strophostyles leiosperma WILD BEAN Stylisma pickeringii pattersonii PATTERSON BINDWEED Symphoricarpos albus laevigatus GARDEN SNOWBERRY Symphoricarpos occidentalis WESTERN SNOWBERRY Symphoricarpos orbiculatus BUCKBRUSH Taenidia integerrima YELLOW PIMPERNEL Tanacetum vulgare COMMON TANSY 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 revolutum WAXY MEADOW RUE Thaspium trifoliatum MEADOW PARSNIP Thelypteris palustris pubescens MARSH FERN Thlaspi arvense FIELD PENNY CRESS Tilia americana AMERICAN LINDEN Torilis japonica HEDGE PARSLEY Toxicodendron radicans POISON IVY Tradescantia ohiensis SPIDERWORT Tradescantia subaspera SPIDERWORT Tragopogon dubius GOAT'S BEARD Tragopogon porrifolius VEGETABLE OYSTER SALSIFY Tragopogon pratensis COMMON GOAT'S BEARD Trautvetteria caroliniensis FALSE BUGBANE Triadenum fraseri FRASER'S ST. JOHNS-WORT Tribulus terrestris PUNCTURE-WEED Trichostema brachiatum FALSE PENNYROYAL Trichostema dichotomum BLUE CURLS Tridens flavus FALSE RED TOP Trifolium campestre LOW HOP CLOVER Trifolium hybridum ALSIKE CLOVER Trifolium pratense RED CLOVER Trifolium repens WHITE CLOVER Trillium flexipes DECLINED TRILLIUM Trillium nivale SNOW TRILLIUM Trillium recurvatum RED TRILLIUM Triodanis leptocarpa VENUS' LOOKING GLASS Triodanis perfoliata VENUS' LOOKING-GLASS Triosteum illinoense ILLINOIS HORSE GENTIAN Triosteum perfoliatum LATE HORSE GENTIAN Triplasis purpurea PURPLE SANDGRASS Typha angustifolia NARROW-LEAVED CATTAIL Typha latifolia CATTAIL Ulmus americana AMERICAN ELM Ulmus pumila SIBERIAN ELM Ulmus rubra SLIPPERY ELM Urtica dioica STINGING NETTLE Utricularia vulgaris COMMOM BLADDERWORT Uvularia grandiflora BIG MERRY BELLS Vaccinium pallidum LOW-BUSH BLUEBERRY Vaccinium pallidum LOW-BUSH BLUEBERRY Verbascum blattaria MOTH MULLEIN Verbascum thapsus WOOLLY MULLEIN Verbena X perriana Verbena bracteata CREEEPING VERVAIN Verbena hastata BLUE VERVAIN Verbena stricta HOARY VERVAIN Verbena urticifolia WHITE VERVIAN Verbesina alternifolia WING STEM Verbesina helianthoides YELLOW CROWNBEARD Vernonia fasciculata COMMON IRONWEED Vernonia missurica MISSOURI IRONWEED Veronica arvensis CORN SPEEDWELL Veronica catenata WATER SPEEDWELL Veronica peregrina PURSLANE SPEEDWELL Veronica serpyllifolia THYME-LEAVED SPEEDWELL Veronicastrum virginicum CULVER'S ROOT Viburnum prunifolium BLACK HAW Viburnum recognitum SMOOTH ARROWWOOD Vicia villosa WINTER VETCH Vinca minor COMMON PERIWINKLE Viola fimbriatula SAND VIOLET Viola lanceolata LANCE-LEAVED VIOLET Viola pedata BIRDFOOT VIOLET Viola pedatifida PRAIRIE VIOLET Viola pubescens eriocarpa SMOOTH YELLOW VIOLET Viola rafinesquii JOHNNY-JUMP-UP Viola sagittata ARROW-LEAVED VIOLET Viola sororia WOOLLY BLUE VIOLET Viola triloba CLEFT VIOLET Vitis aestivalis SUMMER GRAPE Vitis cinerea WINTER GRAPE Vitis riparia RIVERVBANK GRAPE Vitis vulpina FROST GRAPE Vulpia octoflora SIX-WEEKS FESCUE Vulpia octoflora glauca SLENDER FESCUE Vulpia octoflora tenella SIX-WEEKS FESCUE Wolffia columbiana COMMON WATERMEAL Woodsia obtusa COMMON WOODSIA Xanthium strumarium canadensis COCKLE BUR Xyris torta TWISTED YELLOW-EYED GRASS Yucca flaccida ADAM'S NEEDLE Zanthoxylum americanum PRICKLY ASH Zizia aurea GOLDEN ALEXANDERS Zosterella dubia WATER STAR-GRASS