Plant Species for Cook County

Scientific Name Common Name
Abutilon theophrastii BUTTONWEED
Acalypha rhomboidea THREE-SEEDED MERCURY
Acalypha virginica THREE-SEEDED MERCURY
Acer ginnala AMUR MAPLE
Acer negundo ASH-LEAVED MAPLE
Acer nigrum BLACK MAPLE
Acer platanoides NORWAY MAPLE
Acer rubrum RED MAPLE
Acer saccharinum RIVER MAPLE
Acer saccharum HARD MAPLE
Achillea millefolium COMMON MILFOIL
Acorus americanus FLAG ROOT
Actaea pachypoda DOLL'S-EYES
Actaea rubra RED BANEBERRY
Adiantum pedatum MAIDENHAIR FERN
Aesculus glabra OHIO BUCKEYE
Aethusa cynapium FOOL'S PARSLEY
Agalinis gattingeri ROUND-STEMMED FALSE FOXGLOVE
Agalinis paupercula FALSE FOXGLOVE
Agalinis purpurea FALSE FOXGLOVE
Agalinis skinneriana PALE 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
Agrimonia rostellata WOODLAND AGRIMONY
Agrohordeum X macounii MACOUN'S WILD RYE
Agropyron desertorum CRESTED WHEAT GRASS
Agropyron repens COUCH GRASS
Agropyron repens aristatum
Agropyron smithii COLORADO BLUESTEM
Agropyron smithii molle WESTERN WHEAT GRASS
Agropyron trachycaulum BEARDED WHEAT GRASS
Agropyron trachycaulum unilaterale BEARDED WHEAT GRASS
Agrostemma githago CORN COCKLE
Agrostis alba RED TOP
Agrostis alba palustris CREEPING BENT GRASS
Agrostis hyemalis HAIR GRASS
Agrostis perennans AUTUMN BENT GRASS
Agrostis scabra ROUGH BENT GRASS
Agrostis scabra tuckermanii
Ailanthus altissima TREE-OF-HEAVEN
Ajuga genevensis GENEVA BUGLEWEED
Alcea rosea HOLLYHOCK
Aletris farinosa COLIC ROOT
Alisma plantago aquatica parviflorum COMMON WATER PLANTAIN
Alisma plantago-aquatica americanam AMERICAN WATER PLANTAIN
Alliaria petiolata GARLIC MUSTARD
Allium canadense WILD GARLIC
Allium cernuum NODDING WILD ONION
Allium tricoccum RAMP
Allium vineale FIELD GARLIC
Alnus glutinosa BLACK ALDER
Alnus incana rugosa SPECKLED ALDER
Alopecurus aequalis FOXTAIL
Alopecurus carolinianus ANNUAL FOXTAIL
Alopecurus pratensis MEADOW FOXTAIL
Alyssum alyssoides PALE ALYSSUM
Amaranthus albus TUMBLEWEED
Amaranthus cruentus LOVE-LIES-BLEEDING
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
Amelanchier arborea JUNEBERRY
Amelanchier humilis LOW SHADBUSH
Amelanchier laevis SHADBUSH
Amelanchier sanguinea ROUND-LEAVED SERVICEBERRY
Ammannia coccinea LONG-LEAVED AMMANNIA
Ammophila breviligulata BEACH GRASS
Amorpha canescens LEAD PLANT
Amorpha fruticosa FALSE INDIGO BUSH
Amphicarpa bracteata HOG PEANUT
Amphicarpa bracteata comosa HOG PEANUT
Anagallis arvensis POOR MAN'S WEATHERGLASS
Anaphalis margaritacea
Andropogon gerardii BIG BLUESTEM
Andropogon virginicus BROOM SEDGE
Androsace occidentalis ANDROSACE
Anemone canadensis MEADOW ANEMONE
Anemone caroliniana CAROLINA ANEMONE
Anemone cylindrica CANDLE ANEMONE
Anemone quinquefolia WOOD ANEMONE
Anemone virginiana TALL ANEMONE
Anethum graveolens DILL
Angelica atropurpurea ANGELICA
Antennaria neglecta CAT'S FOOT
Antennaria plantaginifolia EVERLASTING
Antennaria plantaginifolia ambigens EVERLASTING
Antennaria plantaginifolia arnoglossa EVERLASTING
Anthemis cotula DOG FENNEL
Anthemis tinctoria GOLDEN CHAMOMILE
Anthoxanthum odoratum SWEET VERMAL GRASS
Apios americana GROUNDNUT
Aplectrum hyemale ADAM-AND-EVE
Apocynum androsaemifolium SPREADING DOGBANE
Apocynum cannabinum DOGBANE
Apocynum sibiricum INDIAN HEMP
Aquilegia canadensis COLUMBINE
Aquilegia vulgaris GARDEN COLUMBINE
Arabis canadensis SICKLEPOD
Arabis drummondii DRUMMOND'S ROCK CRESS
Arabis glabra TOWER MUSTARD
Arabis hirsuta adpressipilis HAIRY ROCK CRESS
Arabis hirsuta pycnocarpa HAIRY ROCK CRESS
Arabis laevigata SMOOTH ROCK CRESS
Arabis lyrata LYRE-LEAVED ROCK CRESS
Arabis shortii TOOTHED CRESS
Aralia hispida BRISTLY SARSAPARILLA
Aralia nudicaulis WILD SARSAPARILLA
Aralia racemosa AMERICAN SPIKENARD
Arctium lappa GREAT BURDOCK
Arctium minus COMMON BURDOCK
Arctium tomentosum COTTON BURDOCK
Arctostaphylos uva-ursi coactilis BEARBERRY
Arenaria serpyllifolia THYME-LEAVED SANDWORT
Arisaema dracontium GREEN DRAGON
Arisaema triphyllum INDIAN TURNIP
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
Aronia melanocarpa BLACK CHOKECHERRY
Aronia prunifolia PURPLE CHOKEBERRY
Arrhenatherum elatius TALL OAT GRASS
Artemisia abrotanum GARDEN SAGEBRUSH
Artemisia absinthium ABSINTH
Artemisia annua ANNUAL WORMWOOD
Artemisia biennis BIENNIAL WORMWOOD
Artemisia campestris BEACH WORMWOOD
Artemisia dracunculus FALSE TARRAGON
Artemisia frigida FRINGED SAGEBRUSH
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 meadii MEAD'S MILKWEED
Asclepias ontarioides WOOLLY MILKWEED
Asclepias ovalifolia OVAL MILKWEED
Asclepias purpurascens PURPLE MILKWEED
Asclepias speciosa SHOWY 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
Asplenium rhizophyllum WALKING FERN
Aster X amethystinus AMETHYST ASTER
Aster azureus AZURE ASTER
Aster borealis RUSH ASTER
Aster brachyactis RAYLESS ASTER
Aster cordifolius BLUEWOOD ASTER
Aster drummondii DRUMMOND'S ASTER
Aster dumosus BUSHY ASTER
Aster ericoides HEATH ASTER
Aster ericoides prostratus HEATH ASTER
Aster firmus GLOSSY-LEAF ASTER
Aster laevis SMOOTH ASTER
Aster lateriflorus SIDE-FLOWERED ASTER
Aster linariifolius FLAX-LEAVED ASTER
Aster macrophyllus BIG-LEAVED ASTER
Aster novae-angliae NEW ENGLAND ASTER
Aster novi-belgii NEW BELGIUM ASTER
Aster ontarionis ONTARIO ASTER
Aster parviceps ASTER
Aster pilosus HAIRY ASTER
Aster praealtus WILLOW-LEAVED ASTER
Aster puniceus SWAMP ASTER
Aster sagittifolius ARROW ASTER
Aster sericeus SILKY ASTER
Aster shortii SHORT'S ASTER
Aster simplex PANICLED ASTER
Aster umbellatus FLATTOP ASTER
Astragalus canadensis CANADIAN MILK VETCH
Astragalus distortus BENT MILK VETCH
Athyrium angustum LADY FERN
Athyrium thelypterioides SILVERY SPLEENWORT
Atriplex argentea SILVER ORACH
Atriplex patula FAT-HEN SALTBUSH
Atriplex rosea RED ORACHE
Aureolaria flava SMOOTH FALSE FOXGLOVE
Aureolaria grandiflora pulchra YELLOW FALSE FOXGLOVE
Aureolaria pedicularia ambigens CLAMMY FALSE FOXGLOVE
Avena fatua WILD OATS
Avena sativa CULTIVATED OATS
Azolla mexicana MEXICAN AZOLLA
Balsamita major COSTMARY
Baptisia australis BLUE WILD INDIGO
Baptisia australis minor BLUE WILD INDIGO
Baptisia lactea WHITE WILD INDIGO
Baptisia leucophaea CREAM WILD INDIGO
Baptisia tinctoria crebra YELLOW WILD INDIGO
Barbarea vulgaris arcuata WINTER CRESS
Bartonia virginica YELLOW BARTONIA
Beckmannia syzigachne AMERICAN SLOUGH GRASS
Belamcanda chinensis BLACKBERRY LILLY
Berberis thunbergii JAPANESE BARBERRY
Berberis vulgaris COMMON BARBERRY
Berteroa incana HOARY ALYSSUM
Berula erecta WATER PARSNIP
Betula papyrifera CANOE BIRCH
Betula populifolia GRAY BIRCH
Betula pumila DWARF BIRCH
Bidens aristosa SWAMP MARIGOLD
Bidens aristosa retrorsa
Bidens cernua NODDING BEGGAR-TICKS
Bidens connata PURPLESTEM BEGGAR-TICKS
Bidens coronata BEGGAR-TICKS
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 obliquum BRONZE FERN
Botrychium simplex DWARF GRAPE FERN
Botrychium virginianum RATTLESNAKE FERN
Bouteloua curtipendula MESQUITE GRASS
Brachyelytrum erectum LONG-AWNED WOOD GRASS
Brasenia schreberi WATERSHIELD
Brassica hirta WHITE MUSTARD
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 hordeaceus SOFT CHESS
Bromus inermis AWNLESS BROME GRASS
Bromus japonicus JAPANESE BROME
Bromus kalmii PRAIRIE BROME
Bromus marginatus BROME GRASS
Bromus nottowayanus BROME GRASS
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
Buchnera americana BLUE HEARTS
Buglossoides arvense CORN GROMWELL
Bulbostylis capillaris HAIR SEDGE
Butomus umbellatus FLOWERING RUSH
Cacalia atriplicifolia PALE INDIAN PLANTAIN
Cacalia plantaginea PRAIRIE INDIAN PLANTAIN
Cakile edentula lacustris SEA ROCKET
Calamagrostis canadensis BLUEJOINT GRASS
Calamagrostis inexpansa brevior BOG REED GRASS
Calamintha arkansana LOW CALAMINT
Callirhoe triangulata POPPY MALLOW
Callitriche heterophylla LARGE WATER STARWORT
Callitriche verna COMMON WATER STARWORT
Calopogon tuberosus GRASS PINK ORCHID
Caltha palustris COWSLIP
Calystegia pubescens CALIFORNIA ROSE
Calystegia sepium americana AMERICAN BINDWEED
Calystegia sepium angulata HEDGE-BINDWEED
Calystegia spithamaea DWARF BINDWEED
Camassia scilloides WILD HYACINTH
Camelina sativa FALSE FLAX
Campanula americana AMERICAN BELLFLOWER
Campanula aparinoides MARSH BELLFLOWER
Campanula rapunculoides EUROPEAN BELLFLOWER
Campanula rotundifolia BELLFLOWER
Campanula uliginosa MARSH 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 parviflora arenicola SMALL-FLOWERED BITTER CRESS
Cardamine pensylvanica BITTER CRESS
Carduus acanthoides ACANTHUS BRISTLE THISTLE
Carduus nutans MUSK BRISTLE THISTLE
Carex albolutescens SEDGE
Carex albursina SEDGE
Carex alopecoidea
Carex amphibola GRAY SEDGE
Carex annectens
Carex annectens xanthocarpa SEDGE
Carex artitecta SEDGE
Carex atherodes SEDGE
Carex aurea GOLDEN SEDGE
Carex bebbii BEAUTIFUL SEDGE
Carex bicknellii BICKNELL SEDGE
Carex blanda WOODLAND SEDGE
Carex brevior FESCUE SEDGE
Carex bromoides SEDGE
Carex buxbaumii BUXBAUM SEDGE
Carex cephaloidea
Carex cephalophora
Carex comosa BRISTLY SEDGE
Carex conjuncta
Carex conoidea SEDGE
Carex convoluta
Carex crawei SEDGE
Carex crinita FRINGED SEDGE
Carex cristatella SEDGE
Carex crus-corvi SEDGE
Carex cryptolepis SEDGE
Carex davisii DAVIS SEDGE
Carex diandra LESSER PANICLED SEDGE
Carex eburnea SEDGE
Carex festucacea SEDGE
Carex foenea SILVERTOP SEDGE
Carex garberi GARBER'S SEDGE
Carex gracilescens SEDGE
Carex gracillima GRACEFUL SEDGE
Carex granularis MEADOW SEDGE
Carex gravida HEAVY SEDGE
Carex grayi BUR SEDGE
Carex grisea SEDGE
Carex haydenii HAYDEN SEDGE
Carex hirsutella SEDGE
Carex hirtifolia HAIRY SEDGE
Carex hystricina BOTTLEBRUSH SEDGE
Carex interior INLAND SEDGE
Carex intumescens SWOLLEN SEDGE
Carex jamesii GRASS SEDGE
Carex lacustris RIVER SEDGE
Carex laeviconica SEDGE
Carex lanuginosa WOOLY SEDGE
Carex lasiocarpa SEDGE
Carex leptalea BRISTLE STALKED SEDGE
Carex limosa MUD SEDGE
Carex lupuliformis SEDGE
Carex lupulina HOP SEDGE
Carex lurida SEDGE
Carex meadii MEAD SEDGE
Carex muhlenbergii
Carex muskingumensis SEDGE
Carex normalis SEDGE
Carex oligocarpa SEDGE
Carex pensylvanica PENNSYLVANIA SEDGE
Carex plantaginea PLAINTAIN-LEAVED SEDGE
Carex praegracilis SILVER SEDGE
Carex prairea
Carex retrorsa KNOTSHEATH SEDGE
Carex richardsonii RICHARDSON SEDGE
Carex rosea
Carex sartwellii SARTWELL SEDGE
Carex scoparia BROOM SEDGE
Carex shortiana SEDGE
Carex sparganioides
Carex sprengelii LONG-BEAKED SEDGE
Carex squarrosa SEDGE
Carex sterilis SEDGE
Carex stipata PRICKLY SEDGE
Carex stricta TUSSOCK SEDGE
Carex substricta SEDGE
Carex swanii SAVANNA SEDGE
Carex tenera SEDGE
Carex tetanica SEDGE
Carex tribuloides SEDGE
Carex trichocarpa SEDGE
Carex tuckermanii SEDGE
Carex umbellata SEDGE
Carex vesicaria BLISTER SEDGE
Carex virescens SEDGE
Carex viridula GREEN SEDGE
Carex vulpinoidea FOX SEDGE
Carex woodii SEDGE
Carpinus caroliniana AMERICAN HORNBEAM
Carum carvi CARAWAY
Carya cordiformis BITTERNUT HICKORY
Carya glabra PIGNUT HICKORY
Carya ovata SCALY-BARK HICKORY
Carya tomentosa MOCKERNUT HICKORY
Cassia fasciculata GOLDEN CASSIA
Cassia hebecarpa WILD SENNA
Cassia nictitans WILD SENSITIVE PLANT
Cassia obtusifolia SICKLEPOD
Cassia occidentalis COFFEE SENNA
Castilleja coccinea INDIAN PAINTBRUSH
Catalpa bignonioides COMMON CATALPA
Catalpa speciosa CIGAR TREE
Caulophyllum thalictroides BLUE COHOSH
Ceanothus americanus NEW JERSEY TEA
Ceanothus americanus pitcheri NEW JERSEY TEA
Ceanothus herbaceus INLAND NEW JERSEY TEA
Celastrus scandens BITTERSWEET
Celtis occidentalis HACKBERRY
Celtis occidentalis canina HACKBERRY
Celtis occidentalis pumila SMALL HACKBERRY
Cenchrus longispinus MAT SANDBUR
Centaurea cyanus BACHELOR'S BUTTON
Centaurea maculosa SPOTTED CENTAUREA
Centaurea nigra BLACK CENTAUREA
Centaurium pulchellum CENTAURY
Cephalanthus occidentalis BUTTONBUSH
Cerastium arvense FIELD CHICKWEED
Cerastium glomeratum CLAMMY 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
Chamaedaphne calyculata angustifolia LEATHERLEAF
Chamaemelum nobilis GARDEN CHAMOMILE
Chamaesyce glyptosperma SPURGE
Chamaesyce humistrata MILK SPURGE
Chamaesyce maculata NODDING SPURGE
Chamaesyce polygonifolia SEASIDE SPURGE
Chamaesyce serpyllifolia SPURGE
Chamaesyce supina MILK SPURGE
Chelidonium majus CELANDINE
Chelone glabra WHITE TURTLEHEAD
Chenopodium album LAMB'S QUARTERS
Chenopodium ambrosioides AMERICAN WORMSEED
Chenopodium bonus-henricus GOOD KING HENRY
Chenopodium botrys JERUSALEM-OAK
Chenopodium bushianum GOOSEFOOT
Chenopodium desiccatum leptophylloides NARROW-LEAVED GOOSEFOOT
Chenopodium gigantospermum MAPLE-LEAVED GOOSEFOOT
Chenopodium glaucum OAK-LEAVED GOOSEFOOT
Chenopodium missouriense GOOSEFOOT
Chenopodium murale NETTLE-LEAVED GOOSEFOOT
Chenopodium pallescens NARROW-LEAVED GOOSEFOOT
Chenopodium rubrum COAST BLITE
Chenopodium standleyanum GOOSEFOOT
Chenopodium urbicum CITY GOOSEFOOT
Chimaphila maculata SPOTTED WINTERGREEN
Chloris verticillata WINDMILL GRASS
Chorispora tenella CHORISPORA
Cichorium intybus BLUE SAILORS
Cicuta bulbifera BULBLET WATER HEMLOCK
Cicuta maculata WATER HEMLOCK
Cimicifuga racemosa BLACK COHOSH
Cinna arundinacea STOUTWOOD REED
Circaea alpina SMALL ENCHANTER'S NIGHTSHADE
Circaea lutetiana canadensis ENCHANTER'S NIGHTSHADE
Cirsium altissimum TALL THISTLE
Cirsium arvense CANADA THISTLE
Cirsium discolor FIELD THISTLE
Cirsium muticum FEN THISTLE
Cirsium pitcheri DUNE THISTLE
Cirsium pumilum HILL'S THISTLE
Cirsium vulgare BULL THISTLE
Cladium mariscoides TWIG RUSH
Claytonia virginica SPRING BEAUTY
Clematis virginiana VIRGIN'S BOWER
Cleome serrulata PINK CLEOME
Coeloglossum viride BRACTED GREEN ORCHID
Collinsia verna BLUE-EYED MARY
Collomia linearis SLENDERLEAF COLLOMIA
Comandra umbellata BASTARD TOAD-FLAX
Commelina communis COMMON DAY FLOWER
Commelina erecta DAY FLOWER
Comptonia peregrina SWEET FERN
Conioselinum chinense HEMLOCK PARSLEY
Conopholis americana CANCER-ROOT
Conringia orientalis HARE'S-EAR MUSTARD
Consolida regalis FORKING LARKSPUR
Convallaria majalis LILY OF THE VALLEY
Convolvulus arvensis FIELD BINDWEED
Conyza canadensis HORSEWEED
Conyza ramosissima DWARF FLEABANE
Corallorhiza maculata SPOTTED CORAL-ROOT ORCHID
Corallorhiza trifida EARLY CORAL ROOT
Coreopsis grandiflora LARGE-FLOWERED COREOPSIS
Coreopsis lanceolata LANCE COREOPSIS
Coreopsis palmata PRAIRIE COREOPSIS
Coreopsis tinctoria GOLDEN COREOPSIS
Coreopsis tripteris TALL COREOPSIS
Corispermum hyssopifolium COMMON BUGSEED
Cornus alternifolia ALTERNATE-LEAVED DOGWOOD
Cornus canadensis BUNCHBERRY
Cornus obliqua PALE DOGWOOD
Cornus racemosa GRAY DOGWOOD
Cornus rugosa ROUND-LEAVED DOGWOOD
Cornus stolonifera RED OSIER DOGWOOD
Cornus stolonifera baileyi BAILEY'S DOGWOOD
Coronilla varia CROWN VETCH
Coronopus didymus WART CRESS
Corydalis aurea GOLDEN CORYDALIS
Corydalis aurea occidentalis CORYDALIS
Corydalis flavula PALE CORYDALIS
Corydalis sempervirens PINK CORYDALIS
Corylus americana AMERICAN FILBERT
Crataegus calpodendron URN-SHAPED HAWTHORN
Crataegus crus-galli COCK-SPUR THORN
Crataegus holmesiana HAWTHORN
Crataegus lucorum HAWTHORN
Crataegus macrosperma HAWTHORN
Crataegus margaretta HAWTHORN
Crataegus mollis RED HAW
Crataegus monogyna ENGLISH HAWTHORN
Crataegus pedicellata HAWTHORN
Crataegus pruinosa HAWTHORN
Crataegus punctata DOTTED THORN
Crataegus succulenta HAWTHORN
Crataegus tortilis HAWTHORN
Crepis capillaris HAWK'S BEARD
Crotalaria sagittalis RATTLEBOX
Croton capitatus CAPITATE CROTON
Croton glandulosus septentrionalis SAND CROTON
Croton monanthogynus CROTON
Crypsis schoenoides
Cryptogramma stelleri SLENDER CLIFFBRAKE
Cryptotaenia canadensis HONEWORT
Cucurbita foetidissima MISSOURI GOURD
Cuphea viscosissima BLUE WAXWEED
Cuscuta campestris DODDER
Cuscuta cephalanthi BUTTONBUSH DODDER
Cuscuta coryli HAZEL DODDER
Cuscuta glomerata DODDER
Cuscuta gronovii DODDER
Cuscuta pentagona DODDER
Cycloloma atriplicifolium TUMBLE RINGWING
Cymbalaria muralis KENILWORTH IVY
Cynanchum nigrum BLACK SWALLOW-WORT
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 engelmanii
Cyperus erythrorhizos RED-ROOTED SEDGE
Cyperus esculentus CHUFA
Cyperus ferruginescens SLENDER FLATSEDGE
Cyperus filiculmis FERN FLATSEDGE
Cyperus filiculmis macilentus
Cyperus houghtonii
Cyperus rivularis BROOK FLAT SEDGE
Cyperus schweinitzii SCHWEINITZ FLATSEDGE
Cyperus strigosus STRAW COLORED FLATSEDGE
Cypripedium X andrewsii LADY'S-SLIPPERS ORCHID
Cypripedium X favillianum
Cypripedium acaule LADY'S-SLIPPER ORCHID
Cypripedium candidum WHITE LADY'S-SLIPPER ORCHID
Cypripedium parviflorum SM. YELLOW LADY-SLIPPER ORCHID
Cypripedium pubescens LG. YELLOW LADY-SLIPPER ORCHID
Cypripedium reginae SHOWY LADY'S-SLIPPER ORCHID
Cystopteris X tennesseensis TENNESSEE FRAGILE FERN
Cystopteris bulbifera BERRY BLADDER 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 innoxia ANGEL'S TRUMPET
Datura stramonium JIMSONWEED
Daucus carota QUEEN-ANNE'S-LACE
Decodon verticillatus SWAMP LOOSESTRIFE
Delphinium tricorne DWARF LARKSPUR
Dentaria laciniata PEPPER-ROOT
Deschampsia cespitosa glauca
Descurainia pinnata brachycarpa TANSY MUSTARD
Descurainia sophia FLIXWEED
Desmanthus illinoensis ILLINOIS BUNDLEFLOWER
Desmodium canadense SHOWY TICK TREFOIL
Desmodium cuspidatum TICK TREFOIL
Desmodium glabellum TICK TREFOIL
Desmodium glutinosum BEGGAR'S LICE
Desmodium illinoense ILLINOIS TICK TREFOIL
Desmodium paniculatum PANICLED TICK TREFOIL
Desmodium sessilifolium SESSILE-LEAVED TICKTREFOIL
Dianthus armeria DEPTFORD PINK
Dicentra canadensis SQUIRREL-CORN
Dicentra cucullaria DUTCHMAN'S-BREECHES
Dichanthelium acuminatum fasciculatum PANIC GRASS
Dichanthelium acuminatum lindheimeri PANIC GRASS
Dichanthelium boreale NORTHERN PANIC GRASS
Dichanthelium clandestinum BROAD-LEAVED PANIC GRASS
Dichanthelium depauperatum STARVED PANIC GRASS
Dichanthelium dichotomum FORKED PANIC GRASS
Dichanthelium latifolium
Dichanthelium leibergii
Dichanthelium linearifolium SLENDER-LEAVED PANIC GRASS
Dichanthelium meridionale MAT PANIC GRASS
Dichanthelium oligosanthes
Dichanthelium oligosanthes scribnerianum SCRIBNER'S PANIC GRASS
Dichanthelium perlongum LONG-STALKED PANIC GRASS
Dichanthelium villosissimum HAIRY PANIC GRASS
Dichanthelium villosissimum praecocius
Dichanthelium villosissimum pseudopubesc
Didiplis diandra WATER PURSLANE
Diervilla lonicera BUSH HONEYSUCKLE
Digitaria filiformis FINGER GRASS
Digitaria ischaemum SMOOTH CRAB GRASS
Digitaria sanguinalis HAIRY CRAB GRASS
Diodia teres POORJOE
Dioscorea villosa WILD YAM
Diplotaxis muralis WALL ROCKET
Diplotaxis tenuifolia SAND ROCKET
Dipsacus laciniatus CUT-LEAVED TEASEL
Dipsacus sylvestris COMMON TEASEL
Dirca palustris LEATHERWOOD
Distichlis stricta INLAND SALT GRASS
Dodecatheon meadia SHOOTING STAR
Draba reptans WHITLOW GRASS
Draba reptans stellifera SMALL WHITLOW GRASS
Dracopsis amplexicaulis ANNUAL BLACK-EYED SUSAN
Drosera intermedia NARROW-LEAVED SUNDEW
Drosera rotundifolia ROUND-LEAVED SUNDEW
Dryopteris carthusiana SPINULOSE WOODFERN
Dryopteris cristata CRESTED FERN
Dryopteris filix-mas MALE FERN
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 colona JUNGLE RICE
Echinochloa crus-galli BARNYARD GRASS
Echinochloa muricata BARNYARD GRASS
Echinochloa muricata wiegandii BARNYARD GRASS
Echinochloa walteri SALT-MARSH COCKSPUR GRASS
Echinocystis lobata WILD BALSAM-APPLE
Echinops sphaerocephalus GLOBE THISTLE
Echium vulgare BLUEWEED
Eclipta prostrata YERBA DE TAJO
Eleocharis acicularis NEEDLE SPIKE RUSH
Eleocharis elliptica SPIKE RUSH
Eleocharis elliptica compressa FLAT-STEMMED SPIKE RUSH
Eleocharis equisetoides HORSETAIL SPIKERUSH
Eleocharis erythropoda
Eleocharis geniculata SPIKE RUSH
Eleocharis intermedia MATTED SPIKE RUSH
Eleocharis obtusa
Eleocharis obtusa detonsa SPIKE RUSH
Eleocharis obtusa ovata SPIKE RUSH
Eleocharis olivacea SPIKERUSH
Eleocharis palustris
Eleocharis pauciflora FEW-FLOWERED SPIKESEDGE
Eleocharis quadrangulata SQUARE-STEMMED SPIKE RUSH
Eleocharis rostellata BEAKED SPIKESEDGE
Eleocharis verrucosa SLENDER SPIKE RUSH
Eleusine indica GOOSE GRASS
Ellisia nyctelea AUNT LUCY
Elodea canadensis ANACHARIS
Elodea nuttallii ELODEA
Elymus arenarius LYME GRASS
Elymus canadensis CANADA WILD RYE
Elymus hystrix BOTTLEBRUSH GRASS
Elymus riparius RIVERBANK WILD RYE
Elymus villosus HAIRY WILD RYE
Elymus virginicus LYME GRASS
Epilobium angustifolium FIREWEED
Epilobium ciliatum NORTHERN WILLOW HERB
Epilobium coloratum CINNAMON WILLOW HERB
Epilobium hirsutum HAIRY WILLOW HERB
Epilobium leptophyllum BOG WILLOW HERB
Epipactis helleborine HELLEBORINE
Equisetum X ferrissii INTERMEDIATE SCOURING RUSH
Equisetum X nelsonii NELSON'S HORSETAIL
Equisetum X trachyodon HORSETAIL
Equisetum arvense COMMON HORSETAIL
Equisetum fluviatile WATER HORSETAIL
Equisetum hyemale affine SCOURING RUSH
Equisetum laevigatum SMOOTH SCOURING RUSH
Equisetum variegatum VARIEGATED HORSETAIL
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 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
Eriochloa villosa CUP GRASS
Eriophila verna MOUSE-EARED WHITLOW GRASS
Eriophorum angustifolium COTTON SEDGE
Erodium cicutarium ALFILERIA
Erucastrum gallicum DOG MUSTARD
Eryngium yuccifolium RATTLESNAKE MASTER
Erysimum cheiranthoides WORMSEED MUSTARD
Erysimum inconspicuum SMALL WORMSEED MUSTARD
Erythronium albidum WHITE ADDER'S TONGUE
Erythronium americanum YELLOW ADDER'S TONGUE
Euonymus alatus BURNING BUSH
Euonymus atropurpureus BURNING BUSH
Euonymus europaeus EUROPEAN SPINDLE-TREE
Euonymus obovatus RUNNING STRAWBERRY BUSH
Eupatorium altissimum TALL BONESET
Eupatorium coelestinum BLUE BONSET
Eupatorium fistulosum HOLLOW JOE-PYE WEED
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
Eupatorium sessilifolium UPLAND BONESET
Euphorbia commutata WOOD SPURGE
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
Euthamia gymnospermoides GRASSLEAF GOLDENROD
Euthamia tenuifolia GRASS-LEAVED GOLDENROD
Fagopyrum esculentum BUCKWHEAT
Fagus grandifolia caroliniana AMERICAN BEECH
Festuca duriuscula SHEEP FESCUE
Festuca obtusa NODDING FESCUE
Festuca pratensis ENGLISH BLUEGRASS
Festuca rubra RED FESCUE
Festuca tenuifolia SLENDER FESCUE
Filipendula rubra QUEEN OF THE PRAIRIE
Filipendula ulmaria QUEEN OF THE MEADOW
Fimbristylis autumnalis AUTUMN SEDGE
Fimbristylis puberula drummondii CHESTNUT SEDGE
Floerkea proserpinacoides FALSE MERMAID
Fragaria americana HILLSIDE STRAWBERRY
Fragaria virginiana WILD STRAWBERRY
Frasera caroliniensis AMERICAN COLUMBO
Fraxinus americana WHITE ASH
Fraxinus nigra BLACK ASH
Fraxinus pennsylvanica GREEN ASH
Fraxinus quadrangulata BLUE ASH
Froelichia floridana campestris COTTONWEED
Froelichia gracilis COTTONWEED
Fumaria officinalis FUMITORY
Gaillardia pulchella FIREWHEELS
Galearis spectabilis SHOWY ORCHIS
Galeopsis ladanum RED HEMP NETTLE
Galeopsis tetrahit COMMON HEMP NETTLE
Galinsoga parviflora LITTLE FLOWER QUICKWEED
Galinsoga quadriradiata PERUVIAN DAISY
Galium aparine ANNUAL BEDSTRAW
Galium asprellum ROUGH BEDSTRAW
Galium boreale NORTHERN BEDSTRAW
Galium circaezans WILD LICORICE
Galium concinnum SHINING BEDSTRAW
Galium lanceolatum WILD LICORICE
Galium mollugo WHITE BEDSTRAW
Galium obtusum WILD MADDER
Galium pilosum HAIRY BEDSTRAW
Galium tinctorium STIFF BEDSTRAW
Galium trifidum SMALL BEDSTRAW
Galium triflorum SWEET-SCENTED BEDSTRAW
Gaultheria procumbens CHECKERBERRY
Gaura biennis BUTTERFLY-WEED
Gaura parviflora SMALL-FLOWERED GAURA
Gaylussacia baccata BLACK HUCKLEBERRY
Gentiana alba PALE GENTIAN
Gentiana andrewsii CLOSED GENTIAN
Gentiana puberulenta DOWNY GENTIAN
Gentiana saponaria SOAPWORT GENTIAN
Gentiana septemfida
Gentianella quinquefolia occidentalis STIFF GENTIAN
Gentianopsis crinita FRINGED GENTIAN
Gentianopsis procera SMALL FRINGED GENTIAN
Geranium bicknellii BICKNELL GERANIUM
Geranium carolinianum WILD CRANESBILL
Geranium maculatum WILD GERANIUM
Geranium pusillum SMALL CRANESBILL
Geranium robertianum HERB ROBERT
Geum aleppicum YELLOW AVENS
Geum canadense WHITE AVENS
Geum laciniatum ROUGH AVENS
Geum triflorum PRAIRIE AVENS
Geum vernum SPRING AVENS
Glandularia canadensis ROSE VERBENA
Glechoma hederacea micrantha GROUND IVY
Gleditsia triacanthos HONEY LOCUST
Glyceria borealis NORTHERN MANNA GRASS
Glyceria canadensis RATTLESNAKE MANNA GRASS
Glyceria septentrionalis FLOATING MANNA GRASS
Glyceria striata FOWL MANNA GRASS
Glyceria striata stricta FOWL MANNA GRASS
Glycine max SOYBEAN
Glycyrrhiza lepidota WILD LICORICE
Gnaphalium obtusifolium CATFOOT
Gnaphalium uliginosum LOW CUDWEED
Goodyera pubescens RATTLESNAKE PLANTAIN
Gossypium hirsutum COTTON
Gratiola aurea GOLDENPERT
Gratiola neglecta CLAMMY HEDGE HYSSOP
Gratiola virginiana ROUND-FRUITED HEDGE HYSSOP
Grindelia squarrosa CURLYCUP GUMWEED
Gymnocladus dioicus KENTUCKY COFFEETREE
Gypsophila paniculata BABY'S BREATH
Gypsophila scorzonerifolia BABY'S BREATH
Hackelia virginiana STICKSEED
Hamamelis virginiana WITCH-HAZEL
Hedeoma hispida ROUGH PENNYROYAL
Hedeoma pulegioides AMERICAN PENNYROYAL
Hedyotis caerulea BLUETS
Helenium autumnale AUTUMN SNEEZEWEED
Helenium flexuosum PURPLE-HEADED SNEEZEWEED
Helianthemum bicknellii FROSTWEED
Helianthemum canadense COMMON ROCKROSE
Helianthus X luxurians SUNFLOWER
Helianthus annuus COMMON SUNFLOWER
Helianthus decapetalus PALE SUNFLOWER
Helianthus divaricatus DIVERGENT SUNFLOWER
Helianthus giganteus GIANT SUNFLOWER
Helianthus grosseserratus SAWTOOTH SUNFLOWER
Helianthus hirsutus BRISTLY SUNFLOWER
Helianthus maximilianii MAXIMILIAN'S SUNFLOWER
Helianthus mollis ASHY SUNFLOWER
Helianthus occidentalis WESTERN SUNFLOWER
Helianthus petiolaris KANSAS SUNFLOWER
Helianthus rigidus PRAIRIE SUNFLOWER
Helianthus salicifolius WILLOW-LEAVED SUNFLOWER
Helianthus strumosus PALE-LEAVED SUNFLOWER
Helianthus tuberosus JERUSALEM ARTICHOKE
Helianthus tuberosus subcanescens JERUSALEM ARTICHOKE
Heliopsis helianthoides FALSE SUNFLOWER
Heliotropium europaeum EUROPEAN HELIOTROPE
Hemerocallis fulva DAY LILY
Hemerocallis lilio-asphodelus LEMON DAY LILY
Hepatica nobilis acuta SHARP-LOBED HEPATICA
Hepatica nobilis obtusa ROUND-LEAVED HEPATICA
Heracleum lanatum COW PARSNIP
Hesperis matronalis DAME'S ROCKET
Heterotheca camporum GOLDEN ASTER
Heuchera richardsonii grayana PRAIRIE ALUMROOT
Hibiscus laevis HALBERD-LEAVED ROSE MALLOW
Hibiscus moscheutos SWAMP ROSE MALLOW
Hibiscus trionum FLOWER-OF-AN-HOUR
Hieracium caespitosum KING DEVIL
Hieracium canadense CANADA HAWKWEED
Hieracium gronovii HAIRY HAWKWEED
Hieracium longipilum HAIRY HAWKWEED
Hieracium scabrum HAIRY HAWKWEED
Hierochloe odorata SWEET GRASS
Holcus lanatus VELVET GRASS
Hordeum brachyantherum MEADOW BARLEY
Hordeum jubatum FOX-TAIL BARLEY
Hordeum pusillum LITTLE BARLEY
Hordeum vulgare COMMON BARLEY
Hosackia americana DEER VETCH
Hosta lancifolia PLANTAIN LILY
Humulus japonicus JAPANESE HOPS
Humulus lupulus COMMON HOPS
Hybanthus concolor GREEN VIOLET
Hydrastis canadensis GOLDEN SEAL
Hydrophyllum appendiculatum GREAT WATERLEAF
Hydrophyllum virginianum VIRGINIA WATERLEAF
Hypericum boreale NORTHERN ST. JOHN'S WORT
Hypericum canadense CANADIAN ST. JOHNS-WORT
Hypericum gentianoides PINEWEED
Hypericum gymnanthum SMALL ST. JOHNS-WORT
Hypericum kalmianum KALM'S ST. JOHN'S WORT
Hypericum majus ST. JOHNS-WORT
Hypericum mutilum DWARF ST. JOHNS-WORT
Hypericum perforatum COMMON ST. JOHNS-WORT
Hypericum prolificum SHRUBBY ST. JOHNS-WORT
Hypericum punctatum SPOTTED ST. JOHNS-WORT
Hypericum pyramidatum GIANT ST. JOHNS-WORT
Hypericum sphaerocarpum ROUND-FRUITED ST. JOHNS-WORT
Hypochaeris radicata SPOTTED CAT'S-EAR
Hypoxis hirsuta COMMON GOLDSTARGRASS
Ilex verticillata WINTERBERRY
Impatiens capensis JEWELWEED
Impatiens pallida PALE TOUCH-ME-NOT
Inula helenium ELECAMPANE
Iodanthus pinnatifidus PURPLE ROCKET
Ipomoea coccinea RED MORNING-GLORY
Ipomoea hederacea IVY-LEAVED MORNING GLORY
Ipomoea pandurata WILD SWEET POTATO VINE
Ipomoea purpurea COMMON MORNING-GLORY
Iris pseudacorus WATER FLAG
Iris shrevei SOUTHERN BLUE FLAG
Isatis tinctoria DYER'S WOAD
Isoetes melanopoda BLACK QUILLWORT
Isopyrum biternatum FALSE RUE ANEMONE
Iva xanthifolia RAG SUMPWEED
Jeffersonia diphylla TWINLEAF
Juglans cinerea BUTTERNUT
Juglans nigra BLACK WALNUT
Juncus acuminatus KNOTTY-LEAVED RUSH
Juncus alpinus rariflorus RICHARDSON'S RUSH
Juncus balticus littoralis BALTIC RUSH
Juncus biflorus TWO-FLOWERED RUSH
Juncus brachycarpus RUSH
Juncus brachycephalus SHORT-HEADED RUSH
Juncus bufonius TOAD RUSH
Juncus canadensis CANADIAN RUSH
Juncus dudleyi DUDLEY RUSH
Juncus effusus solutus COMMON RUSH
Juncus gerardii BLACK GRASS
Juncus greenei RUSH
Juncus interior INLAND RUSH
Juncus marginatus GRASS-LEAVED RUSH
Juncus nodosus JOINTED RUSH
Juncus tenuis PATH RUSH
Juncus torreyi TORREY RUSH
Juncus vaseyi VASEY'S RUSH
Juniperus communis depressa COMMON JUNIPER
Juniperus horizontalis TRAILING JUNIPER
Juniperus virginiana EASTERN RED CEDAR
Justicia americana WATER WILLOW
Kallstroemia parviflora KALLSTROEMIA
Kochia scoparia BELVEDERE SUMMER CYPRESS
Koeleria macrantha CRESTED HAIR GRASS
Krigia biflora FALSE DANDELOIN
Krigia virginica DWARF DANDELION
Lactuca biennis BIENNIAL LETTUCE
Lactuca canadensis CANADA LETTUCE
Lactuca floridana BLUE LETTUCE
Lactuca ludoviciana PRAIRIE LETTUCE
Lactuca serriola COMPASS PLANT
Lactuca tatarica BLUE LETTUCE
Lamium amplexicaule HENBIT
Lamium maculatum SPOTTED DEAD NETTLE
Lamium purpureum PURPLE DEAD NETTLE
Laportea canadensis CANADA WOOD NETTLE
Lappula echinata BEGGAR'S LICE
Lapsana communis COMMON NIPPLEWORT
Larix decidua EUROPEAN LARCH
Larix laricina AMERICAN LARCH
Lathyrus japonicus glaber BEACH PEA
Lathyrus ochroleucus CREAM PEAVINE
Lathyrus palustris MARSH PEAVINE
Lathyrus palustris myrtifolius VETCHLING
Lathyrus venosus intonsus VEINY PEA
Lechea intermedia PINWEED
Lechea minor PINWEED
Lechea pulchella PINWEED
Lechea stricta PINWEED
Lechea tenuifolia NARROW-LEAVED PINWEED
Lechea villosa HAIRY PINWEED
Leersia oryzoides RICE CUTGRASS
Leersia virginica WHITE GRASS
Lemna minor COMMON DUCKWEED
Lemna perpusilla LEAST DUCKWEED
Lemna trinervis DUCKWEED
Lemna trisulca IVY-LEAVED DUCKWEED
Leontodon taraxicoides HAWKBIT
Leonurus cardiaca MOTHERWORT
Leonurus marrubiastrum LION'S-TAIL
Lepidium campestre FIELD CRESS
Lepidium densiflorum PEPPERGRASS
Lepidium perfoliatum CLASPING CRESS
Lepidium sativum GARDEN CRESS
Lepidium virginicum COMMON PEPPERGRASS
Leptochloa acuminata SALT MEADOW GRASS
Leptochloa fascicularis BEARDED SPRANGLE TOP
Leptoloma cognatum FALL WITCH GRASS
Lespedeza capitata BUSH CLOVER
Lespedeza hirta HAIRY BUSH CLOVER
Lespedeza leptostachya PRAIRIE BUSH CLOVER
Lespedeza violacea VIOLET BUSH CLOVER
Lespedeza virginica SLENDER BUSH CLOVER
Lesquerella gracilis SLENDER BLADDER POD
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
Lilium philadelphicum andinum WOOD LILY
Linaria canadensis BLUE TOADFLAX
Linaria vulgaris BUTTER-AND-EGGS
Lindera benzoin FEVERBUSH
Lindernia dubia FALSE PIMPERNEL
Lindernia dubia anagallidea SLENDER FALSE PIMPERNEL
Linnaea borealis americana TWINFLOWER
Linum medium texanum SMALL YELLOW FLAX
Linum sulcatum GROOVED YELLOW FLAX
Linum usitatissimum COMMON FLAX
Linum virginianum SLENDER YELLOW FLAX
Liparis liliifolia LARGE TWAYBLADE
Liparis loeselii GREEN TWAYBLADE
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 kalmii BOG LOBELIA
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
Lonicera X bella HONEYSUCKLE
Lonicera X muendeniensis BUSH HONEYSUCKLE
Lonicera dioica LIMBER HONEYSUCKLE
Lonicera japonica JAPANESE HONEYSUCKLE
Lonicera maackii AMUR HONEYSUCKLE
Lonicera morrowi MORROW'S HONEYSUCKLE
Lonicera prolifera GRAPE HONEYSUCKLE
Lonicera tatarica TARTARIAN HONEYSUCKLE
Lonicera xylosteum EUROPEAN FLY HONEYSUCKLE
Lotus corniculatus BIRDSFOOT-TREFOIL
Ludwigia alternifolia SEEDBOX
Ludwigia palustris americana MARSH PURSLANE
Ludwigia peploides glabrescens CREEPING PRIMROSE WILLOW
Ludwigia polycarpa FALSE LOOSESTRIFE
Lupinus perennis WILD LUPINE
Luzula multiflora COMMON WOODRUSH
Lychnis alba EVENING CAMPION
Lychnis coronaria MULLEIN PINK
Lycium barbarum COMMON MATRIMONY VINE
Lycopersicum esculentum TOMATO
Lycopodium X habereri GROUND PINE
Lycopodium dendroideum GROUND PINE
Lycopodium digitatum GROUND PINE
Lycopodium inundatum BOG CLUBMOSS
Lycopodium lucidulum SHINING CLUBMOSS
Lycopus americanus COMMON WATER HOREHOUND
Lycopus asper ROUGH WATER HOREHOUND
Lycopus rubellus STALKED WATER HOREHOUND
Lycopus uniflorus NOTHERN BUGLE WEED
Lycopus virginicus BUGLE WEED
Lysimachia X commixta LOOSESTRIFE
Lysimachia ciliata FRINGED LOOSESTRIFE
Lysimachia lanceolata LANCE-LEAVED LOOSESTRIFE
Lysimachia nummularia MONEYWORT
Lysimachia punctata DOTTED LOOSESTRIFE
Lysimachia quadriflora NARROW-LEAVED LOOSESTRIFE
Lysimachia quadrifolia WHORLED LOOSESTRIFE
Lysimachia terrestris SWAMP CANDLES
Lysimachia thyrsiflora TUFTED LOOSESTRIFE
Lysimachia vulgaris GARDEN LOOSESTRIFE
Lysimachia vulgaris GARDEN LOOSESTRIFE
Lythrum alatum WINGED LOOSESTRIFE
Lythrum salicaria PURPLE LOOSESTRIFE
Macleaya cordata PLUME POPPY
Maclura pomifera HEDGE APPLE
Maianthemum canadense CANADA MAYFLOWER
Maianthemum canadense interius FALSE LILY OF THE VALLEY
Malus X soulardii SOULARD CRAB APPLE
Malus ioensis IOWA CRAB APPLE
Malus pumila APPLE
Malva moschata MUSK MALLOW
Malva neglecta CHEESES
Malva sylvestris HIGH MALLOW
Marrubium vulgare COMMON HOREHOUND
Matricaria matricarioides PINEAPPLE WEED
Mazus pumilus
Medeola virginiana INDIAN CUCUMBER ROOT
Medicago lupulina BLACK MEDIC
Medicago sativa ALFALFA
Megalodonta beckii WATER MARIGOLD
Melampyrum lineare latifolium COW WHEAT
Melica mutica TW0-FLOWERED MELIC GRASS
Melica nitens THREE-FLOWERED MELIC GRASS
Melilotus alba WHITE SWEET CLOVER
Melilotus officinalis YELLOW SWEET CLOVER
Menispermum canadense MOONSEED
Mentha X piperita PEPPERMINT
Mentha X villosa FOXTAIL MINT
Mentha arvensis villosa FIELD MINT
Mentha crispa CURLY MINT
Mentha spicata SPEARMINT
Mentzelia nuda LARGE-FLOWERED MENTZELIA
Menyanthes trifoliata minor BUCKBEAN
Mertensia virginica BLUEBELLS
Milium effusum MILLET GRASS
Mimulus alatus WINGED MONKEY FLOWER
Mimulus ringens MONKEY FLOWER
Minuartia groenlandica
Minuartia patula SLENDER SANDWORT
Minuartia stricta ROCK SANDWORT
Mirabilis albida PALE UMBRELLA-WORT
Mirabilis hirsuta HAIRY UMBRELLA-WORT
Mirabilis linearis NARROW-LEAVED UMBRELLA-WORT
Mirabilis nyctaginea WILD FOUR-O'CLOCK
Mitchella repens PARTRIDGE-BERRY
Mitella diphylla BISHOP'S-CAP
Moehringia lateriflora BLUNTLEAF SANDWORT
Mollugo verticillatus CARPETWEED
Monarda bradburiana MONARDA
Monarda citriodora LEMON MINT
Monarda didyma OSWEGO TEA
Monarda fistulosa WILD BERGAMOT
Monarda punctata villicaulis HORSEMINT
Monotropa hypopithys PINESAP
Monotropa uniflora INDIAN PIPE
Morus alba WHITE MULBERRY
Morus alba tatarica RUSSIAN MULBERRY
Morus rubra RED MULBERRY
Muhlenbergia asperifolia ALKALI MUHLY
Muhlenbergia frondosa COMMON SATIN GRASS
Muhlenbergia glomerata MARSH WILD TIMOTHY
Muhlenbergia mexicana LEAFY SATIN GRASS
Muhlenbergia racemosa GREEN MUHLY
Muhlenbergia schreberi NIMBLE WILL
Muhlenbergia sylvatica MUHLY
Muhlenbergia tenuiflora SLENDER MUHLY
Muscari botryoides COMMON GRAPE HYACINTH
Myosotis arvensis FIELD SCORPION GRASS
Myosotis scorpioides FORGET-ME-NOT
Myosotis stricta SMALL-FLOWERED FORGET-ME-NOT
Myosotis sylvatica GARDEN FORGET-ME-NOT
Myosotis verna SCORPION GRASS
Myriophyllum exalbescens SPIKED WATER MILFOIL
Myriophyllum heterophyllum WATER MILFOIL
Myriophyllum hippuroides MARE'S-TAIL MILFOIL
Myriophyllum verticillatum pectinatum WHORLED WATER MILFOIL
Najas flexilis BUSHY PONDWEED
Napaea dioica GLADE MALLOW
Narcissus pseudo-narcissus DAFFODIL
Nasturtium officinale TRUE WATER CRESS
Nelumbo lutea AMERICAN LOTUS
Nemopanthus mucronatus MOUNTAIN HOLLY
Nepeta cataria CATNIP
Nicandra physalodes APPLE-OF-PERU
Nicotiana rustica WILD TOBACCO
Nuphar luteum macrophyllum SPATTERDOCK
Nuphar luteum variegatum BULLHEAD LILLY
Nymphaea odorata FRAGRANT WATER LILY
Nymphaea tuberosa WHITE WATER LILY
Nyssa sylvatica BLACK GUM
Oenothera biennis EVENING PRIMROSE
Oenothera laciniata RAGGED EVENING PRIMROSE
Oenothera parviflora EVENING PRIMROSE
Oenothera perennis SMALL SUNDROPS
Oenothera pilosella PRAIRIE SUNDROPS
Oenothera rhombipetala SAND PRIMROSE
Oenothera speciosa SHOWY EVENING PRIMROSE
Onoclea sensibilis SENSITIVE FERN
Onopordum acanthium Scotch Cottonthistle
Ophioglossum vulgatum pseudopodum ADDER'S-TONGUE FERN
Opuntia humifusa PRICKLY-PEAR
Ornithogalum umbellatum COMMON STAR-OF-BETHLEHEM
Orobanche fasciculata CLUSTERED BROOMRAPE
Orobanche uniflora CANCER-ROOT
Orthilia secunda ONE-SIDED PYROLA
Oryzopsis asperifolia MOUNTAIN RICE
Oryzopsis racemosa BLACK-SEEDED RICE GRASS
Osmorhiza claytonii SWEET CICELY
Osmorhiza longistylis ANISE-ROOT
Osmunda cinnamomea CINNAMON FERN
Osmunda claytoniana INTERRUPTED FERN
Osmunda regalis spectabilis REGAL FERN
Ostrya virginiana HOP HORNBEAM
Oxalis corniculata CREEPING WOOD SORREL
Oxalis dillenii YELLOW WOOD SORREL
Oxalis stricta YELLOW WOOD SORREL
Oxalis violacea PURPLE OXALIS
Oxydendrum arboreum SOURWOOD
Oxypolis rigidior COWBANE
Panax quinquefolius GINSENG
Panicum anceps PANIC GRASS
Panicum capillare WITCH GRASS
Panicum dichotomiflorum FALL PANICUM
Panicum dichotomiflorum puritanorum PANIC GRASS
Panicum flexile SLENDER PANIC GRASS
Panicum miliaceum BROOMCORN MILLET
Panicum rigidulum MUNRO GRASS
Panicum virgatum PRAIRIE SWITCHGRASS
Papaver rhoeas CORN POPPY
Parietaria pensylvanica PENNSYLVANIA PELLITORY
Parnassia glauca GRASS-OF-PARNASSUS
Paronychia canadensis FORKED CHICKWEED
Paronychia fastigiata FORKED CHICKWEED
Parthenium hysterophorus SANTA MARIA
Parthenium integrifolium AMERICAN FEVERFEW
Parthenocissus inserta VIRGINIA CREEPER
Parthenocissus quinquefolia VIRGINIA CREEPER
Pastinaca sativa PARSNIP
Pedicularis canadensis LOUSEWORT
Pedicularis lanceolata SWAMP WOOD BETONY
Pellaea glabella PURPLE CLIFFBRAKE
Peltandra virginica ARROW ARUM
Penstemon calycosus SMOOTH BEARD-TONGUE
Penstemon digitalis FOXGLOVE BEARD-TONGUE
Penstemon hirsutus HAIRY BEARD-TONGUE
Penstemon pallidus PALE BEARD-TONGUE
Penthorum sedoides DITCH STONECROP
Perideridia americana
Perilla frutescens BEEFSTEAK PLANT
Phalaris arundinacea REED CANARY GRASS
Phalaris canariensis BIRDSEED GRASS
Phegopteris hexagonoptera BROAD BEECH FERN
Philadelphus coronarius SWEET MOCK ORANGE
Phleum pratense TIMOTHY
Phlox bifida CLEFF PHLOX
Phlox divaricata laphamii BLUE PHLOX
Phlox glaberrima interior SMOOTH PHLOX
Phlox paniculata GARDEN PHLOX
Phlox pilosa DOWNY PHLOX
Phragmites australis COMMON RED REED
Phryma leptostachya LOPSEED
Phyla lanceolata FOG-FRUIT
Physalis angulata GROUND CHERRY
Physalis heterophylla GROUND CHERRY
Physalis ixocarpa TOMATILLO
Physalis lanceolata NARROW-LEAVED GROUND CHERRY
Physalis pendula GROUND CHERRY
Physalis pubescens ANNUAL GROUND CHERRY
Physalis subglabrata SMOOTH GROUND CHERRY
Physalis virginiana GROUND CHERRY
Physocarpus opulifolius COMMON NINEBARK
Physostegia angustifolia NARROW-LEAVED FALSE DRAGONHEAD
Physostegia speciosa FALSE DRAGONHEAD
Physostegia virginiana FALSE DRAGONHEAD
Phytolacca americana POKEWEED
Pilea fontana CLEARWEED
Pilea pumila CANADA CLEARWEED
Pinus banksiana JACK PINE
Pinus strobus WHITE PINE
Plantago arenaria WHORLED PLANTAIN
Plantago aristata BRACTED PLANTAIN
Plantago cordata HEARTLEAF PLANTAIN
Plantago lanceolata BUCKHORN
Plantago major COMMON PLANTAIN
Plantago media HOARY PLANTAIN
Plantago rugelii RED-STALKED PLANTAIN
Plantago virginica DWARF PLANTAIN
Platanthera ciliaris ORANGE FRINGED ORCHID
Platanthera clavellata GREEN ORCHID
Platanthera flava herbiola TUBERCLED ORCHID
Platanthera hookeri HOOKER'S ORCHID
Platanthera hyperborea huronensis GREEN ORCHID
Platanthera lacera GREEN FRINGED ORCHID
Platanthera leucophaea PRAIRIE WHITE FRINGED ORCHID
Platanthera orbiculata ROUND-LEAVED ORCHID
Platanthera psycodes SMALL PURPLE FRINGED ORCHID
Platanus occidentalis BUTTONWOOD
Pluchea odorata succulenta CAMPHOR WEED
Poa annua ANNUAL BLUEGRASS
Poa bulbosa BULBOUS BLUEGRASS
Poa compressa CANADIAN BLUEGRASS
Poa languida WEAK BLUEGRASS
Poa palustris FOWL BLUEGRASS
Poa pratensis KENTUCKY BLUEGRASS
Poa sylvestris WOODLAND BLUEGRASS
Poa trivialis MEADOW GRASS
Podophyllum peltatum MAYAPPLE
Pogonia ophioglossoides ROSE POGONIA
Poinsettia dentata WILD POINSETTIA
Poinsettia dentata cuphosperma WILD POINSETTIA
Polanisia dodecandra CLAMMYWEED
Polemonium reptans JACOB'S-LADDER
Polygala cruciata aquilonia CROSS MILKWORT
Polygala incarnata PINK MILKWORT
Polygala paucifolia FLOWERING WINTERGREEN
Polygala polygama obtusata PURPLE MILKWORT
Polygala sanguinea FIELD MILKWORT
Polygala senega SENECA SNAKEROOT
Polygala verticillata WHORLED MILKWORT
Polygonatum commutatum GREAT SOLOMON SEAL
Polygonatum pubescens DOWNY SOLOMAN'S SEAL
Polygonella articulata JOINTWEED
Polygonum amphibium WATER SMARTWEED
Polygonum arenastrum KNOTWEED
Polygonum aviculare KNOTWEED
Polygonum buxiforme KNOTWEED
Polygonum careyi CAREY'S HEARTSEASE
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 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
Polymnia canadensis LEAFCUP
Polystichum acrostichoides CHRISTMAS FERN
Polytaenia nuttallii PRAIRIE PARSLEY
Pontederia cordata PICKERELWEED
Populus alba WHITE POPLAR
Populus balsamifera BALSAM POPLAR
Populus deltoides EASTERN COTTONWOOD
Populus grandidentata BIG-TOOTH ASPEN
Populus nigra italica LOMBARDY POPLAR
Populus tremuloides QUAKING ASPEN
Portulaca oleracea PURSLANE
Potamogeton X hagstroemii PONDWEED
Potamogeton X rectifolius PONDWEED
Potamogeton amplifolius LARGELEAF PONDWEED
Potamogeton crispus BEGINNER'S PONDWEED
Potamogeton diversifolius WATERTHREAD PONDWEED
Potamogeton foliosus LEAFY PONDWEED
Potamogeton friesii FRIES'S PONDWEED
Potamogeton gramineus GRASS-LEAVED PONDWEED
Potamogeton illinoensis ILLINOIS PONDWEED
Potamogeton nodosus AMERICAN PONDWEED
Potamogeton pectinatus COMB PONDWEED
Potamogeton praelongus WHITE-STEMMED PONDWEED
Potamogeton pusillus BABY PONDWEED
Potamogeton richardsonii REDHEAD GRASS
Potamogeton strictifolius NARROWLEAF PONDWEED
Potamogeton zosteriformis FLATSTEM PONDWEED
Potentilla anserina SILVERWEED
Potentilla argentea SILVERY CINQUEFOIL
Potentilla arguta PRAIRIE CINQUEFOIL
Potentilla fruticosa BUSH CINQUEFOIL
Potentilla norvegica ROUGH CINQUEFOIL
Potentilla palustris MARSH CINQUEFOIL
Potentilla recta SULFUR CINQUEFOIL
Potentilla rivalis BROOK CINQUEFOIL
Potentilla simplex COMMON CINQUEFOIL
Potentilla tridentata THREE-TOOTED CINQUEFOIL
Prenanthes alba LION'S FOOT
Prenanthes altissima TALL WHITE LETTUCE
Prenanthes aspera ROUGH WHITE LETTUCE
Prenanthes crepidinea GREAT WHITE LETTUCE
Prenanthes racemosa GLAUCOUS WHITE LETTUCE
Proserpinaca palustris MERMAID-WEED
Prunella vulgaris SELF-HEAL
Prunella vulgaris elongata SELF-HEAL
Prunus americana AMERICAN PLUM
Prunus americana lanata WILD PLUM
Prunus hortulana WILD GOOSE PLUM
Prunus nigra CANADA PLUM
Prunus pensylvanica PIN CHERRY
Prunus persica PEACH
Prunus serotina WILD BLACK CHERRY
Prunus susquehanae SAND CHERRY
Prunus virginiana COMMON CHOKECHERRY
Psoralea onobrychis FRENCH GRASS
Psoralea tenuiflora SCURF-PEA
Ptelea trifoliata WAFER ASH
Ptelea trifoliata mollis WAFER ASH
Pteridium aquilinum latiusculum BRACKEN FERN
Puccinellia distans ALKALI GRASS
Pulsatilla patens multifida PASQUE-FLOWER
Pycnanthemum pilosum HAIRY MOUNTAIN MINT
Pycnanthemum tenuifolium SLENDER MOUNTAIN MINT
Pycnanthemum virginianum COMMON MOUNTAIN MINT
Pyrola elliptica SHINLEAF
Pyrus communis PEAR
Quercus alba WHITE OAK
Quercus bicolor SWAMP WHITE OAK
Quercus ellipsoidalis HILL'S 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 acris TALL BUTTERCUP
Ranunculus cymbalaria SEASIDE CROWFOOT
Ranunculus fascicularis EARLY BUTTERCUP
Ranunculus flabellaris YELLOW WATER BUTTERCUP
Ranunculus gmelinii hookeri SMALL YELLOW WATER-CROWFOOT
Ranunculus hispidus BRISTLY BUTTERCUP
Ranunculus longirostris LONGBEAK BUTTERCUP
Ranunculus pensylvanicus BRISTLY CROWFOOT
Ranunculus recurvatus HOOKED BUTTERCUP
Ranunculus repens CREEPING BUTTERCUP
Ranunculus rhomboideus PLAINS BUTTERCUP
Ranunculus sceleratus CURSED CROWFOOT
Ranunculus septentrionalis SWAMP BUTTERCUP
Ranunculus trichophyllus WHITE WATER-CROWFOOT
Ratibida columnifera LONG-HEADED CONEFLOWER
Ratibida pinnata DROOPING CONEFLOWER
Reseda alba DYER'S ROCKET
Rhamnus cathartica COMMON BUCKTHORN
Rhamnus frangula GLOSSY BUCKTHORN
Rhamnus frangula angustifolia NARROW-LEAVED GLOSSY BUCKTHORN
Rhamnus lanceolata LANCE-LEAVED BUCKTHORN
Rheum rhaponticum RHUBARB
Rhexia virginica MEADOW BEAUTY
Rhodotypos scandens JETBEAD
Rhus aromatica AROMATIC SUMAC
Rhus aromatica arenaria BEACH SUMAC
Rhus copallina DWARF SUMAC
Rhus glabra SMOOTH SUMAC
Rhus typhina STAGHORN SUMAC
Rhynchospora alba BEAKED RUSH
Rhynchospora capillacea
Rhynchospora capitellata BEAKED RUSH
Rhynchospora globularis GRASS BEAK RUSH
Rhynchospora glomerata BEAK RUSH
Ribes americanum WILD BLACK CURRENT
Ribes cynosbati DOGBERRY
Ribes hirtellum NORTHERN GOOSEBERRY
Ribes missouriense MISSOURI GOOSEBERRY
Ribes odoratum BUFFALO CURRENT
Ribes rubrum RED CURRENT
Robinia pseudoacacia BLACK LOCUST
Rorippa islandica fernaldiana MARSH YELLOW CRESS
Rorippa islandica hispida HAIRY MARSH YELLOW CRESS
Rorippa sessiliflora SESSILE-FLOWERED CRESS
Rorippa sinuata SPREADING YELLOW CRESS
Rorippa sylvestris CREEPING YELLOW CRESS
Rosa blanda MEADOW ROSE
Rosa carolina PASTURE ROSE
Rosa eglanteria SWEET-BRIER
Rosa multiflora JAPANESE ROSE
Rosa palustris SWAMPY ROSE
Rosa setigera ILLINOIS ROSE
Rosa suffulta SUNSHINE ROSE
Rotala ramosior TOOTH-CUP
Rubus allegheniensis COMMON BLACKBERRY
Rubus flagellaris DEWBERRY
Rubus frondosus BLACKBERRY
Rubus hispidus SWAMPY DEWBERRY
Rubus idaeus CULTIVATED RASPBERRY
Rubus laciniatus CUT-LEAVED BLACKBERRY
Rubus occidentalis BLACK RASPBERRY
Rubus odoratus FLOWERING RASPBERRY
Rubus pensylvanicus BLACKBERRY
Rubus pubescens DWARF RASPBERRY
Rubus strigosus RED RASPBERRY
Rudbeckia hirta BLACK-EYED SUSAN
Rudbeckia laciniata CUTLEAF CONEFLOWER
Rudbeckia subtomentosa FRAGRANT CONEFLOWER
Rudbeckia triloba BROWN-EYED SUSAN
Ruellia humilis HAIRY RUELLIA
Rumex acetosella COMMON SORREL
Rumex altissimus PALE DOCK
Rumex crispus CURLY DOCK
Rumex maritimus fueginus GOLDEN DOCK
Rumex mexicanus DOCK
Rumex obtusifolius BITTER DOCK
Rumex orbiculatus GREAT WATER DOCK
Rumex patientia PATIENCE DOCK
Rumex verticillatus SWAMP DOCK
Sabatia angularis MARSH PINK
Sagina decumbens PEARLWORT
Sagittaria brevirostra ARROWLEAF
Sagittaria graminea GRASS-LEAVED ARROWHEAD
Sagittaria latifolia ARROWHEAD
Sagittaria rigida DEEP WATER DUCK POTATO
Salicornia europaea CHICKEN CLAWS
Salix X subsericea WILLOW
Salix alba WHITE WILLOW
Salix amygdaloides PEACH-LEAVED WILLOW
Salix babylonica WEEPING WILLOW
Salix bebbiana BEAKED WILLOW
Salix candida HOARY WILLOW
Salix discolor PUSSY WILLOW
Salix exigua SANDBAR WILLOW
Salix fragilis BRITTLE WILLOW
Salix glaucophylloides glaucophylla BLUE-LEAF WILLOW
Salix humilis PRAIRIE WILLOW
Salix humilis microphylla SAGE WILLOW
Salix lucida SHINING WILLOW
Salix nigra BLACK WILLOW
Salix pedicellaris hypoglauca BOG WILLOW
Salix petiolaris MEADOW WILLOW
Salix purpurea BASKET WILLOW
Salix rigida HEART-LEAVED WILLOW
Salix sericea SILKY WILLOW
Salix syrticola DUNE WILLOW
Salsola iberica RUSSIAN THISTLE
Salvia nemorosa WILD SAGE
Salvia reflexa ROCKY MOUNTAIN SAGE
Sambucus canadensis COMMON ELDER
Sambucus racemosa pubens RED-BERRIED ELDER
Samolus valerandii BROOKWEED
Sanguinaria canadensis BLOODROOT
Sanguisorba minor GARDEN BURNET
Sanicula canadensis CANADIAN BLACK SNAKEROOT
Sanicula gregaria COMMON SNAKEROOT
Sanicula marilandica BLACK SNAKEROOT
Sanicula trifoliata LARGE-FRUITED BLACK SNAKEROOT
Sanvitalia procumbens CREEPING ZINNIA
Saponaria officinalis BOUNCING BET
Sarracenia purpurea PITCHER PLANT
Sassafras albidum RED SASSAFRAS
Sassafras albidum molle 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 georgianus
Scirpus micranthus
Scirpus micranthus drummondii
Scirpus paludosus ALKALI BULRUSH
Scirpus pedicellatus BULRUSH
Scirpus pendulus RED BULRUSH
Scirpus polyphyllus BULRUSH
Scirpus subterminalis
Scirpus tabernaemontanii GREAT BULRUSH
Scleria triglomerata TALL NUT GRASS
Scleria verticillata LOW NUT RUSH
Scrophularia lanceolata EARLY FIGWORT
Scrophularia marilandica LATE FIGWORT
Scutellaria galericulata MARSH SKULLCAP
Scutellaria lateriflora MAD-DOG SKULLCAP
Scutellaria leonardii SMALL SKULLCAP
Scutellaria ovata HEART-LEAVED SKULLCAP
Scutellaria parvula SMALL SKULLCAP
Secale cereale RYE
Sedum acre MOSSY STONECROP
Sedum purpureum LIVE-FOREVER
Sedum sarmentosum YELLOW STONECROP
Selaginella eclipes SMALL CLUBMOSS
Senecio aureus GOLDEN RAGWORT
Senecio pauperculus BALSAM GROUNDSEL
Senecio plattensis PRAIRIE GROUNDSEL
Senecio viscosus RAGWORT
Senecio vulgaris COMMON GROUNDSEL
Setaria faberi GIANT FOXTAIL
Setaria glauca PIGEON GRASS
Setaria italica FOXTAIL MILLET
Setaria verticillata BRISTLY FOXTAIL
Setaria viridis COMMON FOXTAIL
Shepherdia canadensis BUFFALOBERRY
Sibara virginica VIRGINIA ROCK CRESS
Sicyos angulatus BUR CUCUMBER
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 nivea SNOW CAMPION
Silene noctiflora NIGHT-FLOWERING CATCHFLY
Silene regia ROYAL 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 loeselii TALL HEDGE MUSTARD
Sisymbrium officinale HEDGE MUSTARD
Sisyrinchium albidum BLUE-EYED GRASS
Sisyrinchium angustifolium COMMON BLUE-EYED GRASS
Sisyrinchium campestre PRAIRIE BLUE-EYED GRASS
Sisyrinchium montanum MOUNTAIN 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 elaeagnifolium SILVERY HORSE-NETTLE
Solanum ptycanthum BLACK NIGHTSHADE
Solanum triflorum CUT-LEAVED NIGHTSHADE
Solidago X lutescens UPLAND ASTER
Solidago bicolor SILVERROD
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 ohioensis OHIO GOLDENROD
Solidago patula ROUGH-LEAF GOLDENROD
Solidago ptarmicoides STIFF ASTER
Solidago riddellii RIDDELL'S GOLDENROD
Solidago rigida RIGID GOLDENROD
Solidago sempervirens SEASIDE GOLDENROD
Solidago speciosa SHOWY GOLDENROD
Solidago uliginosa BOG GOLDENROD
Solidago ulmifolia ELM-LEAVED GOLDENROD
Sonchus arvensis FIELD SOWTHISTLE
Sonchus arvensis glabrescens
Sonchus asper PRICKLY SOWTHISTLE
Sonchus oleraceus COMMON SOWTHISTLE
Sorbus aucuparia EUROPEAN MOUNTAIN ASH
Sorghastrum nutans INDIAN GRASS
Sorghum bicolor BROOM CORN
Sorghum halepense EGYPTIAN MILLET
Sparganium americanum AMERICAN BURREED
Sparganium chlorocarpum GREEN-FRUITED BURREED
Sparganium eurycarpum BURREED
Spartina pectinata FRESHWATER CORD GRASS
Spergula arvensis CORN SPURREY
Spergularia media SALT SPURREY
Spergularia rubra SAND SPURREY
Sphenopholis obtusata PRAIRIE WEDGE GRASS
Sphenopholis obtusata major WEDGE GRASS
Spiraea alba MEADOW-SWEET
Spiraea tomentosa HARDHACK
Spiranthes cernua NODDING LADIES-TRESSES
Spiranthes lacera SLENDER LADIES' TRESSES
Spiranthes lucida YELLOW-LIPPED LADIES' TRESSES
Spiranthes magnicamporum DUNE LADIES' TRESSES
Spiranthes romanzoffiana HOODED LADIES' TRESSES
Spirodela polyrhiza BIG DUCKWEED
Sporobolus asper DROP SEED
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
Stachys tenuifolia hispida HAIRY HEDGE NETTLE
Staphylea trifolia BLADDERNUT
Stellaria graminea COMMON STICHWORT
Stellaria media COMMON CHICKWEED
Stellaria pubera GREAT CHICKWEED
Stipa comata NEEDLE GRASS
Stipa spartea NEEDLE GRASS
Strophostyles helvola WILD BEAN
Strophostyles leiosperma WILD BEAN
Stylophorum diphyllum CELANDINE POPPY
Suaeda depressa SEA BLITE
Symphoricarpos occidentalis WESTERN SNOWBERRY
Symphoricarpos orbiculatus BUCKBRUSH
Symphytum officinale COMMON COMFREY
Symplocarpus foetidus SKUNK CABBAGE
Syringa vulgaris LILAC
Taenidia integerrima YELLOW PIMPERNEL
Talinum rugospermum FLOWER-OF-AN-HOUR
Tanacetum parthenium COMMON TANSY
Tanacetum vulgare COMMON TANSY
Taraxacum laevigatum RED-SEEDED DANDELION
Taraxacum officinale COMMON DANDELION
Tephrosia virginiana GOAT'S RUE
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
Thaspium trifoliatum MEADOW PARSNIP
Thelypteris palustris pubescens MARSH FERN
Thismia americana THISMIA
Thlaspi arvense FIELD PENNY CRESS
Thuja occidentalis ARBOR VITAE
Tidestromia lanuginosa WOOLLY TIDESTROMIA
Tilia americana AMERICAN LINDEN
Tofieldia glutinosa FALSE ASPHRODEL
Tomanthera auriculata AURICULATE FALSE FOXGLOVE
Torilis japonica HEDGE PARSLEY
Toxicodendron radicans POISON IVY
Toxicodendron vernix POISON SUMAC
Tradescantia ohiensis SPIDERWORT
Tradescantia virginiana SPIDERWORT
Tragopogon dubius GOAT'S BEARD
Tragopogon porrifolius VEGETABLE OYSTER SALSIFY
Tragopogon pratensis COMMON GOAT'S BEARD
Triadenum fraseri FRASER'S ST. JOHNS-WORT
Tribulus terrestris PUNCTURE-WEED
Trichostema brachiatum FALSE PENNYROYAL
Tridens flavus FALSE RED TOP
Trientalis borealis STAR-FLOWER
Trifolium arvense RABBIT-FOOT CLOVER
Trifolium campestre LOW HOP CLOVER
Trifolium hybridum ALSIKE CLOVER
Trifolium pratense RED CLOVER
Trifolium reflexum BUFFALO CLOVER
Trifolium repens WHITE CLOVER
Trifolium resupinatum PERSIAN CLOVER
Triglochin maritima ARROW-GRASS
Triglochin palustris ARROW-GRASS
Trillium cernuum macranthum NODDING TRILLIUM
Trillium flexipes DECLINED TRILLIUM
Trillium grandiflorum LARGE WHITE TRILLIUM
Trillium nivale SNOW TRILLIUM
Trillium recurvatum RED TRILLIUM
Trillium sessile SESSILE 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
Triplasis purpurea PURPLE SANDGRASS
Triticum aestivum BEARDED WHEAT
Triticum cylindricum JOINTED GOAT GRASS
Typha angustifolia NARROW-LEAVED CATTAIL
Typha latifolia CATTAIL
Ulmus americana AMERICAN ELM
Ulmus pumila SIBERIAN ELM
Ulmus rubra SLIPPERY ELM
Ulmus thomasii CORK ELM
Urtica dioica STINGING NETTLE
Utricularia cornuta HORNED BLADDERWORT
Utricularia gibba HUMPED BLADDERWORT
Utricularia intermedia FLAT-LEAVED BLADDERWORT
Utricularia vulgaris COMMOM BLADDERWORT
Uvularia grandiflora BIG MERRY BELLS
Vaccaria pyramidata COW HERB
Vaccinium angustifolium LOW-BUSH BLUEBERRY
Vaccinium corymbosum HIGH-BUSH BLUEBERRY
Vaccinium macrocarpon AMERICAN CRANBERRY
Vaccinium pallidum LOW-BUSH BLUEBERRY
Vaccinium pallidum LOW-BUSH BLUEBERRY
Valeriana edulis ciliata VALERIAN
Valeriana officinalis GARDEN HELIOTROPE
Vallisneria americana EEL GRASS
Verbascum blattaria MOTH MULLEIN
Verbascum phlomoides CLASPING MULLEIN
Verbascum thapsus WOOLLY MULLEIN
Verbena X blanchardii
Verbena X moechina
Verbena X rydbergii
Verbena bracteata CREEEPING VERVAIN
Verbena hastata BLUE VERVAIN
Verbena simplex NARROW-LEAVED VERVAIN
Verbena stricta HOARY VERVAIN
Verbena urticifolia WHITE VERVIAN
Verbena urticifolia leiocarpa WHITE VERVAIN
Verbesina alternifolia WING STEM
Vernonia fasciculata COMMON IRONWEED
Vernonia gigantea TALL IRON WEED
Vernonia missurica MISSOURI IRONWEED
Veronica arvensis CORN SPEEDWELL
Veronica catenata WATER SPEEDWELL
Veronica officinalis COMMON SPEEDWELL
Veronica peregrina PURSLANE SPEEDWELL
Veronica scutellata MARSH SPEEDWELL
Veronica serpyllifolia THYME-LEAVED SPEEDWELL
Veronicastrum virginicum CULVER'S ROOT
Viburnum acerifolium MAPLE-LEAVED ARROWWOOD
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 americana AMERICAN VETCH
Vicia caroliniana WOOD VETCH
Vicia cracca BIRD VETCH
Vicia dasycarpa HAIRY-FRUITED VETCH
Vicia sativa COMMON VETCH
Vicia villosa WINTER VETCH
Vinca minor COMMON PERIWINKLE
Viola X wittrockiana PANSY
Viola affinis WOODLAND BLUE VIOLET
Viola arvensis WILD PANSY
Viola canadensis corymbosum CANADA VIOLET
Viola conspersa AMERICAN DOG VIOLET
Viola fimbriatula SAND VIOLET
Viola incognita HAIRY WHITE VIOLET
Viola lanceolata LANCE-LEAVED VIOLET
Viola lanceolata vittata NARROW-LEAVED VIOLET
Viola macloskeyi pallens SMOOTH WHITE VIOLET
Viola missouriensis MISSOURI VIOLET
Viola nephrophylla NORTHERN BLUE VIOLET
Viola obliqua MARSH BLUE VIOLET
Viola pedata BIRDFOOT VIOLET
Viola pedatifida PRAIRIE VIOLET
Viola pubescens DOWNY YELLOW VIOLET
Viola pubescens eriocarpa SMOOTH YELLOW VIOLET
Viola sagittata ARROW-LEAVED VIOLET
Viola sororia WOOLLY BLUE VIOLET
Viola striata COMMON WHITE VIOLET
Viola tricolor JOHNNY-JUMP-UP
Viola triloba CLEFT VIOLET
Vitis aestivalis SUMMER GRAPE
Vitis riparia RIVERVBANK GRAPE
Vitis vulpina FROST GRAPE
Vulpia octoflora SIX-WEEKS FESCUE
Wolffia columbiana COMMON WATERMEAL
Wolffiella gladiata DUCKWEED
Woodsia obtusa COMMON WOODSIA
Xanthium spinosum SPINY COCKELBUR
Xanthium strumarium canadensis COCKLE BUR
Xanthium strumarium glabratum COCKLE BUR
Xyris torta TWISTED YELLOW-EYED GRASS
Zannichellia palustris COMMON POOLMAT
Zanthoxylum americanum PRICKLY ASH
Zea mays CORN
Zizania aquatica GIANT WILD RICE
Zizania aquatica interior WILD RICE
Zizia aptera HEART-LEAVED MEADOW PARSNIP
Zizia aurea GOLDEN ALEXANDERS
Zosterella dubia WATER STAR-GRASS