1,190 records for CHAMPAIGN County Abelmoschus esculentus OKRA Abutilon theophrastii BUTTONWEED Acalypha ostryaefolia THREE-SEEDED MERCURY Acalypha rhomboidea THREE-SEEDED MERCURY Acalypha virginica THREE-SEEDED MERCURY Acer negundo ASH-LEAVED MAPLE Acer nigrum BLACK 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 Aesculus hippocastanum HORSE-CHESTNUT 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 alba palustris CREEPING BENT GRASS Agrostis capillaris COLONIAL BENT GRASS Agrostis hyemalis HAIR GRASS Agrostis perennans AUTUMN BENT GRASS Ailanthus altissima TREE-OF-HEAVEN Alcea rosea HOLLYHOCK Alisma plantago aquatica parviflorum COMMON WATER PLANTAIN Alliaria petiolata GARLIC MUSTARD Allium canadense WILD GARLIC Allium schoenoprasum CHIVES Allium tricoccum RAMP Allium vineale FIELD GARLIC Alopecurus carolinianus ANNUAL FOXTAIL Alopecurus pratensis MEADOW FOXTAIL Amaranthus albus TUMBLEWEED Amaranthus graecizans PROSTRATE AMARANTH Amaranthus hybridus GREEN 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 Amelanchier arborea JUNEBERRY Amelanchier laevis SHADBUSH Ammannia coccinea LONG-LEAVED AMMANNIA Amorpha canescens LEAD PLANT Amorpha fruticosa FALSE INDIGO BUSH Amphicarpa bracteata HOG PEANUT Amphicarpa bracteata comosa HOG PEANUT Anagallis arvensis POOR MAN'S WEATHERGLASS Andropogon gerardii BIG BLUESTEM Anemone canadensis MEADOW ANEMONE Anemone cylindrica CANDLE ANEMONE Anemone virginiana TALL ANEMONE Anethum graveolens DILL Antennaria neglecta CAT'S FOOT Antennaria plantaginifolia EVERLASTING Antennaria plantaginifolia ambigens EVERLASTING Antennaria plantaginifolia arnoglossa EVERLASTING Anthemis arvensis CORN CHAMOMILE Anthemis cotula DOG FENNEL Apios americana GROUNDNUT Aplectrum hyemale ADAM-AND-EVE Apocynum X medium INTERMEDIATE DOGBANE Apocynum androsaemifolium SPREADING DOGBANE Apocynum cannabinum DOGBANE Apocynum sibiricum INDIAN HEMP Aquilegia canadensis COLUMBINE Aquilegia vulgaris GARDEN COLUMBINE Arabidopsis thaliana MOUSE-EARED CRESS Arabis laevigata SMOOTH ROCK CRESS Arabis shortii TOOTHED CRESS Aralia racemosa AMERICAN SPIKENARD Arctium minus COMMON 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 longespica THREE AWN Aristida oligantha PLAINS THREE AWN GRASS Armoracia aquatica LAKE CRESS Armoracia rusticana HORSERADISH Arrhenatherum elatius TALL OAT GRASS Artemisia biennis BIENNIAL WORMWOOD Artemisia ludoviciana LOUISIANA SAGEBRUSH Artemisia ludoviciana gnaphalodes Artemisia vulgaris COMMON MUGWORT Asarum canadense reflexum CANADA WILD GINGER Asclepias amplexicaulis SAND MILKWEED Asclepias exaltata POKE MILKWEED Asclepias hirtella TALL GREEN MILKWEED Asclepias incarnata SWAMP 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 X amethystinus AMETHYST ASTER Aster azureus AZURE ASTER Aster cordifolius BLUEWOOD ASTER Aster drummondii DRUMMOND'S ASTER Aster dumosus BUSHY ASTER Aster ericoides HEATH ASTER Aster ericoides prostratus HEATH ASTER Aster laevis SMOOTH ASTER Aster lateriflorus SIDE-FLOWERED ASTER Aster novae-angliae NEW ENGLAND ASTER Aster ontarionis ONTARIO ASTER Aster pilosus HAIRY ASTER Aster praealtus WILLOW-LEAVED ASTER Aster sagittifolius ARROW ASTER Aster sericeus SILKY ASTER Aster shortii SHORT'S ASTER Aster simplex PANICLED ASTER Astragalus canadensis CANADIAN MILK VETCH Athyrium pycnocarpon GLADE FERN Athyrium thelypterioides SILVERY SPLEENWORT Atriplex patula FAT-HEN SALTBUSH Aureolaria grandiflora pulchra YELLOW FALSE FOXGLOVE Avena sativa CULTIVATED OATS Balsamita major COSTMARY Baptisia lactea WHITE WILD INDIGO Baptisia leucophaea CREAM WILD INDIGO Barbarea verna EARLY WINTER CRESS Barbarea vulgaris arcuata WINTER CRESS Belamcanda chinensis BLACKBERRY LILLY Bellis perennis ENGLISH DAISY Berberis thunbergii JAPANESE BARBERRY Berberis vulgaris COMMON BARBERRY Bidens aristosa SWAMP MARIGOLD Bidens aristosa retrorsa Bidens bipinnata SPANISH NEEDLES Bidens cernua NODDING BEGGAR-TICKS Bidens connata PURPLESTEM BEGGAR-TICKS Bidens coronata BEGGAR-TICKS Bidens discoidea STICKTIGHT Bidens frondosa COMMON BEGGAR-TICKS Bidens tripartita BEGGARTICK Bidens vulgata STICKTIGHT Blephilia ciliata PAGODA PLANT Blephilia hirsuta PAGODA PLANT Boehmeria cylindrica FALSE NETTLE Boltonia asteroides FALSE ASTER Borago officinalis BORAGE Botrychium dissectum BRONZE FERN Botrychium dissectum obliquum BRONZE FERN Botrychium virginianum RATTLESNAKE FERN Bouteloua curtipendula MESQUITE GRASS Brachyelytrum erectum LONG-AWNED WOOD GRASS Brassica juncea CHINESE MUSTARD Brassica kaber pinnatifida CHARLOCK Brassica napus TURNIP Brassica nigra BLACK MUSTARD Brassica rapa BIRD'S RAPE Brickellia eupatorioides FALSE BONESET Bromus catharticus RESCUE GRASS Bromus ciliatus CANADA BROME GRASS Bromus commutatus HAIRY BROME Bromus inermis AWNLESS BROME GRASS Bromus japonicus JAPANESE BROME Bromus pubescens CANADA BROME GRASS Bromus purgans BROME GRASS Bromus racemosus BALD BROME Bromus secalinus CHEAT Bromus sterilis BROME GRASS Bromus tectorum CHEAT GRASS BROME Buglossoides arvense CORN GROMWELL Bulbostylis capillaris HAIR SEDGE Cacalia atriplicifolia PALE INDIAN PLANTAIN Cacalia muhlenbergii GREAT INDIAN PLANTAIN Cacalia plantaginea PRAIRIE INDIAN PLANTAIN Calamagrostis canadensis BLUEJOINT GRASS Callitriche terrestris TERRESTRIAL STARWORT Caltha palustris COWSLIP Calystegia pubescens CALIFORNIA ROSE Calystegia sepium americana AMERICAN BINDWEED Calystegia silvatica fraterniflorus BINDWEED Calystegia spithamaea DWARF BINDWEED Camassia scilloides WILD HYACINTH Camelina microcarpa FALSE FLAX Campanula americana AMERICAN BELLFLOWER Campanula rapunculoides EUROPEAN BELLFLOWER Campsis radicans TRUMPET CREEPER Cannabis sativa HASHISH Capsella bursa-pastoris SHEPERD'S-PURSE Cardamine bulbosa BULB BITTERCRESS Cardamine douglassii NORTHERN BITTER CRESS Cardamine hirsuta HAIRY BITTER CRESS Cardamine pensylvanica BITTER CRESS Cardaria draba HOARY CRESS Carduus nutans MUSK BRISTLE THISTLE Carex albursina SEDGE Carex annectens Carex annectens xanthocarpa SEDGE Carex bicknellii BICKNELL SEDGE Carex blanda WOODLAND SEDGE Carex brevior FESCUE SEDGE Carex careyana SEDGE Carex cephaloidea Carex cephalophora Carex conjuncta Carex convoluta Carex crawei SEDGE Carex cristatella SEDGE Carex crus-corvi SEDGE Carex davisii DAVIS 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 hirsutella SEDGE Carex hirtifolia HAIRY SEDGE Carex hystricina BOTTLEBRUSH SEDGE Carex jamesii GRASS SEDGE Carex lacustris RIVER SEDGE Carex lanuginosa WOOLY SEDGE Carex leavenworthii Carex lupuliformis SEDGE Carex lupulina HOP SEDGE Carex meadii MEAD SEDGE Carex normalis SEDGE Carex pensylvanica PENNSYLVANIA SEDGE Carex rosea Carex shortiana SEDGE Carex sparganioides Carex squarrosa SEDGE Carex stipata PRICKLY SEDGE Carex stricta TUSSOCK SEDGE Carex suberecta SEDGE Carex swanii SAVANNA SEDGE Carex tenera SEDGE Carex tribuloides SEDGE Carex trichocarpa SEDGE Carex vulpinoidea FOX SEDGE Carpinus caroliniana AMERICAN HORNBEAM Carya cordiformis BITTERNUT HICKORY Carya glabra PIGNUT HICKORY Carya laciniosa BIG SHELLBARK Carya ovalis FALSE SHAGBARK HICKORY Carya ovata SCALY-BARK HICKORY Carya tomentosa MOCKERNUT HICKORY Cassia fasciculata GOLDEN CASSIA Cassia hebecarpa WILD SENNA Cassia marilandica MARYLAND SENNA Castilleja coccinea INDIAN PAINTBRUSH Catalpa bignonioides COMMON CATALPA Catalpa speciosa CIGAR TREE Caulophyllum thalictroides BLUE COHOSH Ceanothus americanus NEW JERSEY TEA Celastrus scandens BITTERSWEET Celtis occidentalis HACKBERRY Celtis occidentalis canina HACKBERRY Cenchrus longispinus MAT SANDBUR Centaurea cyanus BACHELOR'S BUTTON Centaurea jacea BROWN KNAPWEED Centaurea maculosa SPOTTED CENTAUREA Centaurea moschata SWEET SULTAN Cephalanthus occidentalis BUTTONBUSH Cerastium diffusum CHICKWEED Cerastium nutans NODDING 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 maculata NODDING SPURGE Chamaesyce serpens ROUND-LEAVED SPURGE Chamaesyce supina MILK SPURGE Chasmanthium latifolium SEA OATS Chelone glabra WHITE TURTLEHEAD Chenopodium album LAMB'S QUARTERS Chenopodium ambrosioides AMERICAN WORMSEED Chenopodium berlandieri zschackei GOOSEFOOT Chenopodium botrys JERUSALEM-OAK Chenopodium desiccatum leptophylloides NARROW-LEAVED GOOSEFOOT Chenopodium gigantospermum MAPLE-LEAVED GOOSEFOOT Chenopodium glaucum OAK-LEAVED GOOSEFOOT Chenopodium missouriense GOOSEFOOT Chenopodium standleyanum GOOSEFOOT 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 Citrullus lanatus WATERMELON Claytonia virginica SPRING BEAUTY Clematis pitcheri LEATHER FLOWER Clematis terniflora VIRGIN'S BOWER Cnicus benedictus BLESSED THISTLE Coeloglossum viride BRACTED GREEN ORCHID Collinsia verna BLUE-EYED MARY Collinsonia canadensis CITRONELLA HORSE BALM Comandra umbellata BASTARD TOAD-FLAX Commelina communis COMMON DAY FLOWER Conium maculatum POISON HEMLOCK Conringia orientalis HARE'S-EAR MUSTARD Consolida ambigua ROCKET LARKSPUR Convolvulus arvensis FIELD BINDWEED Conyza canadensis HORSEWEED Conyza ramosissima DWARF FLEABANE Coreopsis lanceolata LANCE COREOPSIS Coreopsis palmata PRAIRIE COREOPSIS Coreopsis tinctoria GOLDEN COREOPSIS Coreopsis tripteris TALL COREOPSIS Cornus alternifolia ALTERNATE-LEAVED DOGWOOD 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 GOLDEN CORYDALIS Corylus americana AMERICAN FILBERT Crataegus calpodendron URN-SHAPED HAWTHORN Crataegus crus-galli COCK-SPUR THORN Crataegus holmesiana HAWTHORN Crataegus margaretta HAWTHORN Crataegus mollis RED HAW Crataegus pruinosa HAWTHORN Crataegus succulenta HAWTHORN Crotalaria sagittalis RATTLEBOX Croton glandulosus septentrionalis SAND CROTON Cryptotaenia canadensis HONEWORT Cucurbita foetidissima MISSOURI GOURD Cuphea viscosissima BLUE WAXWEED Cuscuta campestris DODDER Cuscuta cephalanthi BUTTONBUSH DODDER Cuscuta gronovii DODDER Cuscuta polygonorum SMARTWEED DODDER Cycloloma atriplicifolium TUMBLE RINGWING Cymbalaria muralis KENILWORTH IVY Cynanchum laeve BLUE VINE Cynodon dactylon BAHAMA GRASS Cynoglossum officinale COMMON HOUND'S TONGUE Cyperus acuminatus TAPERLEAF FLAT SEDGE Cyperus aristatus BEARDED FLAT SEDGE Cyperus diandrus LOW FLAT SEDGE Cyperus esculentus CHUFA Cyperus ferruginescens SLENDER FLATSEDGE Cyperus filiculmis FERN FLATSEDGE Cyperus filiculmis macilentus Cyperus rivularis BROOK FLAT SEDGE Cyperus schweinitzii SCHWEINITZ FLATSEDGE Cyperus strigosus STRAW COLORED FLATSEDGE Cypripedium candidum WHITE LADY'S-SLIPPER ORCHID Cypripedium pubescens LG. YELLOW LADY-SLIPPER ORCHID Cystopteris X tennesseensis TENNESSEE FRAGILE FERN Cystopteris protrusa FRAGILE FERN Dactylis glomerata ORCHARD GRASS Dalea candida WHITE PRAIRIE CLOVER Dalea leporina FOXTAIL DALEA Dalea purpurea PURPLE PRAIRIE CLOVER Danthonia spicata CURLY GRASS Dasistoma macrophylla MULLEIN FOXGLOVE Datura stramonium JIMSONWEED Daucus carota QUEEN-ANNE'S-LACE Dentaria laciniata PEPPER-ROOT Descurainia pinnata brachycarpa TANSY MUSTARD Descurainia sophia FLIXWEED Desmodium canadense SHOWY TICK TREFOIL Desmodium canescens HOARY TICK TREFOIL Desmodium ciliare HAIRY TICK TREFOIL Desmodium cuspidatum TICK TREFOIL Desmodium cuspidatum longifolium TICK TREFOIL Desmodium glabellum TICK TREFOIL Desmodium glutinosum BEGGAR'S LICE Desmodium illinoense ILLINOIS TICK TREFOIL Desmodium nudiflorum BARE-STEMMED TICK TREFOIL Desmodium paniculatum PANICLED TICK TREFOIL Dianthus armeria DEPTFORD PINK Diarrhena americana obovata BEAK GRASS Dicentra canadensis SQUIRREL-CORN Dicentra cucullaria DUTCHMAN'S-BREECHES Dichanthelium acuminatum fasciculatum PANIC GRASS Dichanthelium acuminatum lindheimeri PANIC GRASS Dichanthelium clandestinum BROAD-LEAVED PANIC GRASS Dichanthelium latifolium Dichanthelium leibergii Dichanthelium oligosanthes Dichanthelium oligosanthes scribnerianum SCRIBNER'S PANIC GRASS Dichanthelium perlongum LONG-STALKED PANIC GRASS Dichanthelium villosissimum praecocius Digitaria ischaemum SMOOTH CRAB GRASS Digitaria sanguinalis HAIRY CRAB GRASS Diodia teres POORJOE Dioscorea villosa WILD YAM Diospyros virginiana PERSIMMON Dipsacus laciniatus CUT-LEAVED TEASEL Dipsacus sylvestris COMMON TEASEL Dirca palustris LEATHERWOOD Distichlis stricta INLAND SALT GRASS Dodecatheon meadia SHOOTING STAR Dyssodia papposa FETID MARIGOLD Echinacea pallida PALE PURPLE CONEFLOWER Echinacea purpurea BROAD-LEAVED PURPLE CONEFLOWER Echinochloa crus-galli BARNYARD GRASS Echinochloa muricata BARNYARD GRASS Echinochloa muricata wiegandii BARNYARD GRASS Echinocystis lobata WILD BALSAM-APPLE Echinodorus berteroi lanceolatus BURHEAD Echinodorus cordifolius CREEPING BURHEAD Echium vulgare BLUEWEED Eclipta prostrata YERBA DE TAJO Elaeagnus angustifolia RUSSIAN OLIVE Eleocharis acicularis NEEDLE SPIKE RUSH Eleocharis elliptica SPIKE RUSH Eleocharis elliptica compressa FLAT-STEMMED SPIKE RUSH Eleocharis erythropoda Eleocharis obtusa 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 Equisetum X ferrissii INTERMEDIATE SCOURING RUSH Equisetum arvense COMMON HORSETAIL Equisetum hyemale affine SCOURING RUSH Equisetum laevigatum SMOOTH SCOURING RUSH Eragrostis capillaris LACE GRASS Eragrostis cilianensis STINK GRASS Eragrostis frankii SANDBAR LOVE GRASS Eragrostis hypnoides CREEPING LOVE GRASS Eragrostis minor LOVE GRASS Eragrostis pectinacea CAROLINA LOVE GRASS Eragrostis reptans PONY GRASS Eragrostis spectabilis PURPLE LOVE GRASS Erechtites hieracifolia FIRE WEED Erigenia bulbosa HARBINGER-OF-SPRING Erigeron annuus ANNUAL FLEABANE Erigeron philadelphicus MARSH FLEABANE Erigeron pulchellus ROBIN'S PLANTAIN Erigeron strigosus DAISY FLEABANE Eriophila verna MOUSE-EARED WHITLOW GRASS Erodium cicutarium ALFILERIA Erucastrum gallicum DOG MUSTARD Eryngium yuccifolium RATTLESNAKE MASTER Erysimum repandum TREACLE MUSTARD Erythronium albidum WHITE ADDER'S TONGUE Erythronium americanum YELLOW ADDER'S TONGUE Euonymus atropurpureus BURNING BUSH Euonymus obovatus RUNNING STRAWBERRY 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 cyparissias CYPRESS SPURGE Euphorbia esula LEAFY SPURGE Euphorbia marginata SNOW-ON-THE-MOUNTAIN Euphorbia obtusata BLUNT-LEAVED SPURGE Euthamia graminifolia GRASSLEAF GOLDENROD Fagopyrum esculentum BUCKWHEAT Festuca duriuscula SHEEP FESCUE Festuca obtusa NODDING FESCUE Festuca paradoxa FESCUE Festuca pratensis ENGLISH BLUEGRASS Floerkea proserpinacoides FALSE MERMAID Fragaria virginiana WILD STRAWBERRY Fraxinus americana WHITE ASH Fraxinus pennsylvanica GREEN ASH Fraxinus quadrangulata BLUE ASH Froelichia gracilis COTTONWEED 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 mollugo WHITE BEDSTRAW Galium obtusum WILD MADDER Galium pedemontanum BEDSTRAW Galium tinctorium STIFF BEDSTRAW Galium triflorum SWEET-SCENTED BEDSTRAW Gaura biennis BUTTERFLY-WEED Gaura parviflora SMALL-FLOWERED GAURA Gentiana andrewsii CLOSED GENTIAN Gentiana puberulenta DOWNY GENTIAN Gentianella quinquefolia occidentalis STIFF GENTIAN Geranium carolinianum WILD CRANESBILL Geranium maculatum WILD GERANIUM Geranium sibiricum SIBERIAN CRANESBILL Geum canadense WHITE AVENS Geum laciniatum ROUGH AVENS Geum vernum SPRING 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 Gossypium hirsutum COTTON Gratiola neglecta CLAMMY HEDGE HYSSOP Grindelia squarrosa CURLYCUP GUMWEED Gymnocladus dioicus KENTUCKY COFFEETREE Gypsophila elegans BABY'S BREATH Hackelia virginiana STICKSEED Hamamelis virginiana WITCH-HAZEL Hedeoma hispida ROUGH PENNYROYAL Hedeoma pulegioides AMERICAN PENNYROYAL Hedyotis purpurea calycosa BLUETS Helenium amarum ROCK BITTERWEED Helenium autumnale AUTUMN SNEEZEWEED Helenium flexuosum PURPLE-HEADED SNEEZEWEED Helianthemum bicknellii FROSTWEED Helianthus annuus COMMON SUNFLOWER Helianthus decapetalus PALE 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 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 Holcus lanatus VELVET GRASS Holosteum umbellatum JAGGED CHICKWEED Hordeum jubatum FOX-TAIL BARLEY Hordeum pusillum LITTLE BARLEY Hordeum vulgare COMMON BARLEY Humulus japonicus JAPANESE HOPS Humulus lupulus COMMON HOPS Hybanthus concolor GREEN VIOLET Hydrangea arborescens WILD HYDRANGEA Hydrastis canadensis GOLDEN SEAL Hydrophyllum appendiculatum GREAT WATERLEAF Hydrophyllum canadense BROAD-LEAVED WATERLEAF Hydrophyllum virginianum VIRGINIA WATERLEAF Hypericum perforatum COMMON ST. JOHNS-WORT Hypericum punctatum SPOTTED ST. JOHNS-WORT Hypericum sphaerocarpum ROUND-FRUITED ST. JOHNS-WORT Hypochaeris radicata SPOTTED CAT'S-EAR Hypoxis hirsuta COMMON GOLDSTARGRASS Impatiens capensis JEWELWEED Impatiens pallida PALE TOUCH-ME-NOT Inula helenium ELECAMPANE Iodanthus pinnatifidus PURPLE ROCKET Ipomoea hederacea IVY-LEAVED MORNING GLORY Ipomoea lacunosa SMALL WHITE MORNING-GLORY Ipomoea pandurata WILD SWEET POTATO VINE Ipomoea purpurea COMMON MORNING-GLORY Iris pseudacorus WATER FLAG Iris shrevei SOUTHERN BLUE FLAG Isopyrum biternatum FALSE RUE ANEMONE Iva xanthifolia RAG SUMPWEED Juglans cinerea BUTTERNUT Juglans nigra BLACK WALNUT Juncus bufonius TOAD RUSH Juncus dudleyi DUDLEY RUSH Juncus interior INLAND RUSH Juncus tenuis PATH RUSH Juncus torreyi TORREY RUSH Juniperus virginiana EASTERN RED CEDAR Justicia americana WATER WILLOW Kickxia elatine CANKER-ROOT Kochia scoparia BELVEDERE SUMMER CYPRESS Koeleria macrantha CRESTED HAIR GRASS Krigia biflora FALSE DANDELOIN Kummerowia stipulacea KOREAN CLOVER Kummerowia striata JAPANESE LESPEDEZA Lactuca canadensis CANADA LETTUCE 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 Lathyrus palustris myrtifolius VETCHLING Leersia oryzoides RICE CUTGRASS Leersia virginica WHITE GRASS Lemna minor COMMON DUCKWEED Leontodon autumnalis FALL DANDELION Leonurus cardiaca MOTHERWORT Leonurus marrubiastrum LION'S-TAIL Lepidium campestre FIELD CRESS Lepidium densiflorum PEPPERGRASS Lepidium perfoliatum CLASPING CRESS Lepidium virginicum COMMON PEPPERGRASS Leptochloa fascicularis BEARDED SPRANGLE TOP Leptoloma cognatum FALL WITCH GRASS Lespedeza capitata BUSH CLOVER Lespedeza intermedia 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 Ligustrum vulgare PRIVET Lilium michiganense MICHIGAN LILY Lilium philadelphicum andinum WOOD LILY Linaria vulgaris BUTTER-AND-EGGS Lindera benzoin FEVERBUSH Lindernia dubia FALSE PIMPERNEL Lindernia dubia anagallidea SLENDER FALSE PIMPERNEL Linum sulcatum GROOVED YELLOW FLAX Linum usitatissimum COMMON FLAX Liparis liliifolia LARGE TWAYBLADE Lithospermum canescens HOARY 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 Lobularia maritima SWEET ALYSSUM Lolium multiflorum ITALIAN RYE GRASS Lolium perenne CRESTED RYE GRASS Lolium temulentum DARNEL Lonicera japonica JAPANESE HONEYSUCKLE Lonicera morrowi MORROW'S HONEYSUCKLE Lonicera prolifera GRAPE HONEYSUCKLE Lonicera sempervirens TRUMPET HONEYSUCKLE Lonicera tatarica TARTARIAN HONEYSUCKLE Lonicera xylosteum EUROPEAN FLY HONEYSUCKLE Lotus corniculatus BIRDSFOOT-TREFOIL Ludwigia palustris americana MARSH PURSLANE Ludwigia polycarpa FALSE LOOSESTRIFE Lunaria annua HONESTY Lychnis alba EVENING CAMPION Lycium barbarum COMMON MATRIMONY VINE Lycium chinense CHINESE 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 punctata DOTTED LOOSESTRIFE Lysimachia quadriflora NARROW-LEAVED LOOSESTRIFE Lysimachia vulgaris GARDEN LOOSESTRIFE Lysimachia vulgaris GARDEN LOOSESTRIFE Lythrum alatum WINGED LOOSESTRIFE Maclura pomifera HEDGE APPLE Malus coronaria WILD SWEET CRAB APPLE Malus ioensis IOWA CRAB APPLE Malus pumila APPLE Malva neglecta CHEESES Malva rotundifolia DWARF MALLOW Malva sylvestris HIGH MALLOW Marrubium vulgare COMMON HOREHOUND Matricaria matricarioides PINEAPPLE WEED Medicago lupulina BLACK MEDIC Medicago sativa ALFALFA Melilotus alba WHITE SWEET CLOVER Melilotus altissima TALL YELLOW SWEET CLOVER Melilotus officinalis YELLOW SWEET CLOVER Menispermum canadense MOONSEED Mentha X gentilis LITTLE-LEAVED MINT 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 Mitella diphylla BISHOP'S-CAP Moehringia lateriflora BLUNTLEAF SANDWORT Mollugo verticillatus CARPETWEED Monarda bradburiana MONARDA 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 X curtisetosa MUHLY Muhlenbergia asperifolia ALKALI MUHLY Muhlenbergia frondosa COMMON SATIN GRASS Muhlenbergia frondosa commutata Muhlenbergia mexicana LEAFY SATIN GRASS Muhlenbergia racemosa GREEN MUHLY Muhlenbergia schreberi NIMBLE WILL Muhlenbergia sobolifera MUHLY Muhlenbergia sylvatica MUHLY Muhlenbergia tenuiflora SLENDER MUHLY Myosotis verna SCORPION GRASS Myosurus minimus MOUSETAIL Myriophyllum verticillatum pectinatum WHORLED WATER MILFOIL Najas flexilis BUSHY PONDWEED Najas guadalupensis SOUTHERN NAIAD Napaea dioica GLADE MALLOW Narcissus pseudo-narcissus DAFFODIL Nasturtium officinale TRUE WATER CRESS Nelumbo lutea AMERICAN LOTUS Nepeta cataria CATNIP Nothocalais cuspidata PRAIRIE DANDELION Nothoscordum bivalve CROW POISON Nuphar luteum macrophyllum SPATTERDOCK Oenothera biennis EVENING PRIMROSE Oenothera biennis canescens EVENING PRIMROSE Oenothera laciniata RAGGED EVENING PRIMROSE Oenothera pilosella PRAIRIE SUNDROPS Oenothera speciosa SHOWY EVENING PRIMROSE Onoclea sensibilis SENSITIVE FERN Onopordum acanthium Scotch Cottonthistle Ornithogalum umbellatum COMMON STAR-OF-BETHLEHEM Orobanche ramosa BROOMRAPE Orobanche uniflora CANCER-ROOT Osmorhiza claytonii SWEET CICELY Osmorhiza longistylis ANISE-ROOT Ostrya virginiana HOP HORNBEAM Oxalis corniculata CREEPING WOOD SORREL 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 dichotomiflorum FALL PANICUM Panicum dichotomiflorum geniculatum FALL PANICUM Panicum gattingeri PANIC GRASS Panicum miliaceum BROOMCORN MILLET Panicum virgatum PRAIRIE SWITCHGRASS Papaver rhoeas CORN POPPY Parietaria pensylvanica PENNSYLVANIA PELLITORY Paronychia fastigiata FORKED CHICKWEED Parthenium integrifolium AMERICAN FEVERFEW Parthenocissus inserta VIRGINIA CREEPER Parthenocissus quinquefolia VIRGINIA CREEPER Paspalum ciliatifolium BEADGRASS Paspalum laeve SMOOTH LENS GRASS Passiflora lutea glabriflora SMALL PASION-FLOWER Pastinaca sativa PARSNIP Pedicularis canadensis LOUSEWORT Pedicularis lanceolata SWAMP WOOD BETONY Penstemon calycosus SMOOTH BEARD-TONGUE Penstemon digitalis FOXGLOVE BEARD-TONGUE Penthorum sedoides DITCH STONECROP Perideridia americana Petrorhagia saxifraga SAXIFRAGE PINK Phalaris arundinacea REED CANARY GRASS Phalaris canariensis BIRDSEED GRASS Phleum pratense TIMOTHY Phlox divaricata laphamii BLUE PHLOX Phlox glaberrima interior SMOOTH PHLOX Phlox maculata WILD SWEET WILLIAM Phlox paniculata GARDEN PHLOX Phlox pilosa DOWNY PHLOX Phlox pilosa sangamonensis SANGAMON PHLOX Phragmites australis COMMON RED REED Phryma leptostachya LOPSEED Phyla lanceolata FOG-FRUIT Physalis heterophylla GROUND CHERRY Physalis lanceolata NARROW-LEAVED GROUND CHERRY Physalis macrophysa LARGE-FRUITED GROUND CHERRY Physalis pubescens ANNUAL GROUND CHERRY Physalis subglabrata SMOOTH GROUND CHERRY Physalis virginiana GROUND CHERRY Physostegia speciosa FALSE DRAGONHEAD Physostegia virginiana FALSE DRAGONHEAD Phytolacca americana POKEWEED Pilea fontana CLEARWEED Pilea pumila CANADA CLEARWEED Plantago arenaria WHORLED PLANTAIN Plantago aristata BRACTED PLANTAIN Plantago cordata HEARTLEAF PLANTAIN Plantago lanceolata BUCKHORN Plantago major COMMON PLANTAIN Plantago pusilla SMALL PLANTAIN Plantago rugelii RED-STALKED PLANTAIN Plantago virginica DWARF PLANTAIN Platanthera leucophaea PRAIRIE WHITE FRINGED ORCHID Platanus occidentalis BUTTONWOOD Poa annua ANNUAL BLUEGRASS Poa bulbosa BULBOUS BLUEGRASS Poa chapmaniana ANNUAL BLUEGRASS Poa compressa CANADIAN BLUEGRASS Poa nemoralis WOODLAND BLUEGRASS Poa pratensis KENTUCKY BLUEGRASS Poa sylvestris WOODLAND BLUEGRASS Podophyllum peltatum MAYAPPLE Poinsettia dentata WILD POINSETTIA Polanisia dodecandra CLAMMYWEED Polanisia dodecandra trachysperma CLAMMYWEED Polemonium reptans JACOB'S-LADDER Polygala polygama obtusata PURPLE 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 cespitosum longisetum CREEPING SMARTWEED Polygonum convolvulus BLACK BIRDWEED Polygonum cristatum COPSE BINDWEED Polygonum cuspidatum JAPANESE FLEECE FLOWER Polygonum erectum ERECT KNOTWEED Polygonum exsertum LONG-FRUITED KNOTWEED Polygonum hydropiper COMMON SMARTWEED Polygonum hydropiperoides MILD WATER PEPPER Polygonum lapathifolium CURTTOP LADY'S THUMB Polygonum neglectum Polygonum orientale KISS-ME-OVER-THE-GARDEN-GATE Polygonum pensylvanicum GIANT SMARTWEED Polygonum pensylvanicum laevigatum PENNSYLVANIA SMARTWEED Polygonum persicaria SPOTTED LADY'S THUMB Polygonum punctatum DOTTED SMARTWEED Polygonum ramosissimum BUSHY KNOTWEED Polygonum sagittatum ARROWLEAF TEARTHUMB Polygonum scabrum HEDGE CORNBIND Polygonum scandens CLIMBING BUCKWHEAT Polygonum virginianum VIRGINIA KNOTWEED Polymnia canadensis LEAFCUP Polymnia canadensis LEAFCUP Polystichum acrostichoides CHRISTMAS FERN Polytaenia nuttallii PRAIRIE PARSLEY Populus alba WHITE POPLAR Populus canescens GRAY POPLAR Populus deltoides EASTERN COTTONWOOD Populus grandidentata BIG-TOOTH ASPEN Populus tremuloides QUAKING ASPEN Porteranthus stipulatus INDIAN PHYSIC Portulaca grandiflora MOSS-ROSE Portulaca oleracea PURSLANE Potamogeton foliosus LEAFY PONDWEED Potamogeton nodosus AMERICAN PONDWEED Potamogeton pectinatus COMB PONDWEED Potentilla argentea SILVERY CINQUEFOIL Potentilla arguta PRAIRIE CINQUEFOIL Potentilla fruticosa BUSH CINQUEFOIL Potentilla intermedia INTERMEDIATE CINQUEFOIL Potentilla norvegica ROUGH CINQUEFOIL Potentilla recta SULFUR CINQUEFOIL Potentilla simplex COMMON CINQUEFOIL Prenanthes aspera ROUGH WHITE LETTUCE Prenanthes crepidinea GREAT WHITE LETTUCE Prenanthes racemosa GLAUCOUS WHITE LETTUCE Proboscidea louisianica DEVILSCLAW Proserpinaca palustris MERMAID-WEED Prunella vulgaris SELF-HEAL Prunella vulgaris elongata SELF-HEAL Prunus americana AMERICAN PLUM Prunus americana lanata WILD PLUM Prunus angustifolia CHICKASAW PLUM Prunus armeniaca APRICOT Prunus cerasus PIE CHERRY Prunus hortulana WILD GOOSE PLUM Prunus persica PEACH Prunus serotina WILD BLACK CHERRY Prunus virginiana COMMON CHOKECHERRY Psoralea onobrychis FRENCH GRASS Ptelea trifoliata WAFER ASH Pteridium aquilinum latiusculum BRACKEN FERN Pycnanthemum pilosum HAIRY MOUNTAIN MINT Pycnanthemum tenuifolium SLENDER MOUNTAIN MINT Pycnanthemum virginianum COMMON MOUNTAIN MINT Quercus alba WHITE OAK Quercus bicolor SWAMP WHITE OAK Quercus imbricaria JACK OAK Quercus macrocarpa BURR OAK Quercus palustris PIN OAK Quercus prinoides acuminata CHINKAPIN OAK Quercus rubra NORTHERN RED OAK Quercus velutina BLACK OAK Ranunculus abortivus LITTLE-LEAF BUTTERCUP Ranunculus abortivus acrolasius SMALL-FLOWERED CROWFOOT Ranunculus acris TALL BUTTERCUP Ranunculus carolinianus BUTTERCUP Ranunculus fascicularis EARLY BUTTERCUP Ranunculus flabellaris YELLOW WATER BUTTERCUP Ranunculus hispidus BRISTLY BUTTERCUP Ranunculus longirostris LONGBEAK BUTTERCUP Ranunculus recurvatus HOOKED BUTTERCUP Ranunculus repens CREEPING BUTTERCUP Ranunculus septentrionalis SWAMP BUTTERCUP Ranunculus trichophyllus WHITE WATER-CROWFOOT Raphanus raphanistrum JOINTED CHARLOCK Raphanus sativus RADISH Ratibida pinnata DROOPING CONEFLOWER Rhamnus frangula GLOSSY BUCKTHORN Rhamnus lanceolata LANCE-LEAVED BUCKTHORN Rhus glabra SMOOTH SUMAC Rhus typhina STAGHORN SUMAC Ribes americanum WILD BLACK CURRENT Ribes cynosbati DOGBERRY Ribes missouriense MISSOURI GOOSEBERRY Ribes odoratum BUFFALO CURRENT Ribes rubrum RED 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 eglanteria SWEET-BRIER Rosa multiflora JAPANESE ROSE Rosa setigera ILLINOIS ROSE Rotala ramosior TOOTH-CUP Rubus allegheniensis COMMON BLACKBERRY Rubus argutus HIGHBUSH BLACKBERRY Rubus flagellaris DEWBERRY Rubus frondosus BLACKBERRY Rubus idaeus CULTIVATED RASPBERRY Rubus laciniatus CUT-LEAVED BLACKBERRY Rubus occidentalis BLACK 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 verticillatus SWAMP DOCK Sabatia angularis MARSH PINK Sagina decumbens PEARLWORT Sagittaria brevirostra ARROWLEAF Sagittaria calycina ARROWLEAF Sagittaria latifolia ARROWHEAD Salix alba WHITE WILLOW Salix alba vitellina WHITE WILLOW Salix amygdaloides PEACH-LEAVED WILLOW Salix caroliniana CAROLINA WILLOW Salix discolor PUSSY WILLOW Salix exigua SANDBAR WILLOW Salix fragilis BRITTLE WILLOW Salix humilis PRAIRIE WILLOW Salix nigra BLACK WILLOW Salix pentandra BAY-LEAVED WILLOW Salix rigida HEART-LEAVED WILLOW Salvia azurea grandiflora BLUE SAGE Sambucus canadensis COMMON ELDER Samolus valerandii BROOKWEED Sanguinaria canadensis BLOODROOT Sanicula canadensis CANADIAN BLACK SNAKEROOT Sanicula gregaria COMMON SNAKEROOT Saponaria officinalis BOUNCING BET Sassafras albidum RED SASSAFRAS Saururus cernuus LIZARD'S TAIL 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 georgianus Scirpus micranthus Scirpus pendulus RED BULRUSH Scirpus tabernaemontanii GREAT BULRUSH Scrophularia lanceolata EARLY FIGWORT Scrophularia marilandica LATE FIGWORT Scutellaria incana DOWNY SKULLCAP Scutellaria lateriflora MAD-DOG 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 obovatus ROUNDLEAF RAGWORT Senecio pauperculus BALSAM GROUNDSEL Senecio plattensis PRAIRIE GROUNDSEL Senecio vulgaris COMMON GROUNDSEL Setaria faberi GIANT FOXTAIL Setaria glauca PIGEON GRASS Setaria italica FOXTAIL MILLET Setaria verticillata BRISTLY FOXTAIL Setaria viridis COMMON FOXTAIL Setaria viridis major GIANT GREEN FOXTAIL Sida spinosa PRICKLY SIDA Silene antirrhina SLEEPY CATCHFLY Silene armeria SWEET WILLIAM CATCHFLY Silene cserei GLAUCOUS CAMPION Silene cucubalus BLACKLER CAMPION Silene dichotoma FORKED CATCHFLY Silene noctiflora NIGHT-FLOWERING CATCHFLY Silene stellata STARRY CAMPION Silene virginica FIREPINK Silphium integrifolium WHOLELEAF ROSINWEED Silphium laciniatum COMPASS-PLANT Silphium perfoliatum CUP PLANT Silphium terebinthinaceum DOCK ROSIN-WEED Sisymbrium altissimum TUMBLE MUSTARD Sisymbrium officinale HEDGE MUSTARD Sisyrinchium albidum BLUE-EYED GRASS Sisyrinchium angustifolium COMMON 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 illinoensis CARRION FLOWER Smilax lasioneuron COMMON CARRION FLOWER Solanum carolinense HORSE-NETTLE Solanum cornutum BUFFALO-BUR Solanum dulcamara FALSE BITTERSWEET Solanum ptycanthum BLACK NIGHTSHADE Solidago caesia BLUESTEM GOLDENROD Solidago canadensis CANADA GOLDENROD Solidago flexicaulis BROADLEAF GOLDENROD Solidago gigantea LATE GOLDENROD Solidago juncea EARLY GOLDENROD Solidago missouriensis MISSOURI GOLDENROD Solidago nemoralis DYERSWEED GOLDENROD Solidago riddellii RIDDELL'S GOLDENROD Solidago rigida RIGID GOLDENROD Solidago speciosa SHOWY GOLDENROD Solidago ulmifolia ELM-LEAVED GOLDENROD Sonchus arvensis FIELD SOWTHISTLE Sonchus arvensis glabrescens 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 Spergula arvensis CORN SPURREY Sphenopholis obtusata PRAIRIE WEDGE GRASS Sphenopholis obtusata major WEDGE GRASS Spiraea alba MEADOW-SWEET Spiraea latifolia MEADOW-SWEET Spirodela polyrhiza BIG DUCKWEED Sporobolus asper DROP SEED 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 Stachys tenuifolia hispida HAIRY HEDGE NETTLE Staphylea trifolia BLADDERNUT Stellaria graminea COMMON STICHWORT Stellaria longifolia CHICKWEED Stellaria media COMMON CHICKWEED Stipa spartea NEEDLE GRASS Strophostyles helvola WILD BEAN Symphoricarpos albus laevigatus GARDEN SNOWBERRY Symphoricarpos orbiculatus BUCKBRUSH Symphytum officinale COMMON COMFREY Taenidia integerrima YELLOW PIMPERNEL Tanacetum parthenium COMMON TANSY Tanacetum vulgare COMMON TANSY Taraxacum laevigatum RED-SEEDED DANDELION Taraxacum officinale COMMON DANDELION Teucrium canadense boreale GRAY GERMANDER Teucrium canadense virginicum AMERICAN GERMANDER Thalictrum dasycarpum PURPLE MEADOW RUE Thalictrum dasycarpum hypoglaucum MEADOW RUE Thalictrum dioicum EARLY MEADOW RUE Thalictrum revolutum WAXY MEADOW RUE Thalictrum thalictroides RUE ANEMONE Thaspium barbinode HAIRY MEADOW PARSNIP Thelypteris palustris pubescens MARSH FERN Thlaspi arvense FIELD PENNY CRESS Tilia americana AMERICAN LINDEN Tomanthera auriculata AURICULATE FALSE FOXGLOVE Torilis japonica HEDGE PARSLEY Toxicodendron radicans POISON IVY Tradescantia ohiensis SPIDERWORT Tradescantia subaspera SPIDERWORT Tradescantia virginiana SPIDERWORT Tragopogon dubius GOAT'S BEARD Tragopogon porrifolius VEGETABLE OYSTER SALSIFY Tragopogon pratensis COMMON GOAT'S BEARD Tribulus terrestris PUNCTURE-WEED Trichostema brachiatum FALSE PENNYROYAL Tridens flavus FALSE RED TOP Trifolium arvense RABBIT-FOOT CLOVER 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 perfoliata VENUS' LOOKING-GLASS Triosteum aurantiacum EARLY HORSE GENTIAN Triosteum illinoense ILLINOIS HORSE GENTIAN Triosteum perfoliatum LATE HORSE GENTIAN Triphora trianthophora NODDING POGONIA Tripsacum dactyloides GAMA GRASS Triticum aestivum BEARDED WHEAT Triticum cylindricum JOINTED GOAT GRASS Typha angustifolia NARROW-LEAVED CATTAIL Typha latifolia CATTAIL Ulmus americana AMERICAN ELM Ulmus rubra SLIPPERY ELM Urtica dioica STINGING NETTLE Urtica urens BURNING NETTLE Utricularia vulgaris COMMOM BLADDERWORT Uvularia grandiflora BIG MERRY BELLS Vaccaria pyramidata COW HERB Verbascum blattaria MOTH MULLEIN Verbascum thapsus WOOLLY MULLEIN Verbena bracteata CREEEPING VERVAIN Verbena hastata BLUE VERVAIN Verbena simplex NARROW-LEAVED VERVAIN Verbena stricta HOARY VERVAIN Verbena urticifolia WHITE VERVIAN Verbesina alternifolia WING STEM Verbesina encelioides GOLDEN CROWNBEARD Verbesina helianthoides YELLOW CROWNBEARD Vernonia arkansana IRONWEED Vernonia fasciculata COMMON IRONWEED Vernonia gigantea TALL IRON WEED Vernonia missurica MISSOURI IRONWEED Veronica arvensis CORN SPEEDWELL Veronica catenata WATER SPEEDWELL Veronica peregrina PURSLANE SPEEDWELL Veronica polita SPEEDWELL Veronica serpyllifolia THYME-LEAVED SPEEDWELL Veronicastrum virginicum CULVER'S ROOT Viburnum lentago NANNYBERRY Viburnum opulus EUROPEAN HIGH-BUSH CRANBERRY Viburnum prunifolium BLACK HAW Viburnum rafinesquianum DOWNY ARROWWOOD Viburnum recognitum SMOOTH ARROWWOOD Viburnum trilobum HIGH-BUSH CRANBERRY Vicia cracca BIRD VETCH Vicia villosa WINTER VETCH Vinca minor COMMON PERIWINKLE Viola missouriensis MISSOURI VIOLET Viola nephrophylla NORTHERN BLUE VIOLET Viola obliqua MARSH BLUE 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 Viola striata COMMON WHITE 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 tenella SIX-WEEKS FESCUE Wolffia columbiana COMMON WATERMEAL Xanthium strumarium canadensis COCKLE BUR Xanthium strumarium glabratum COCKLE BUR Yucca flaccida ADAM'S NEEDLE Zanthoxylum americanum PRICKLY ASH Zea mays CORN Zizia aurea GOLDEN ALEXANDERS Zosterella dubia WATER STAR-GRASS