absinth wormwood (Artemisia absinthium)

alfalfa (Medicago sativa ssp. sativa)

alkali plantain (Plantago eriopoda)

Allegheny blackberry (Rubus allegheniensis)

alsike clover (Trifolium hybridum)

American basswood (Tilia americana)

American bird’s-foot trefoil (Lotus unifoliolatus var. unifoliolatus)

American black currant (Ribes americanum)

American bladdernut (Staphylea trifolia)

American bugleweed (Lycopus americanus)

American bur-reed (Sparganium americanum)

American cow parsnip (Heracleum maximum)

American dog violet (Viola labradorica)

American elderberry (Sambucus nigra var. canadensis)

American elm (Ulmus americana)

American false pennyroyal (Hedeoma pulegioides)

American germander (Teucrium canadense)

American germander (Teucrium canadense var. canadense)

American hazel (Corylus americana)

American lopseed (Phryma leptostachya)

American lotus (Nelumbo lutea)

American pasqueflower (Pulsatilla patens ssp. multifida)

American plum (Prunus americana)

American red raspberry (Rubus idaeus)

American starflower (Trientalis borealis)

American vetch (Vicia americana var. americana)

American white waterlily (Nymphaea odorata)

American white waterlily (Nymphaea odorata ssp. tuberosa)

American witchhazel (Hamamelis virginiana)

amur maple (Acer ginnala)

aniseroot (Osmorhiza longistylis)

annual bursage (Ambrosia acanthicarpa)

annual fleabane (Erigeron annuus)

arctic brome (Bromus kalmii)

aromatic aster (Symphyotrichum oblongifolium)

arrow-leaved violet (Viola sagittata var. sagittata)

arum-leaved arrowhead (Sagittaria cuneata)

asparagus (asparagus officinalis)

Baldwin’s ironweed (Vernonia baldwinii ssp. interior)

Balkan catchfly (Silene csereii)

ball cactus (Escobaria vivipara var. vivipara)

balsam fir (Abies balsamea)

balsam groundsel (Packera paupercula)

balsam poplar (Populus balsamifera)

Baltic rush (Juncus balticus var. littoralis)

bastard toadflax (Comandra umbellata ssp. umbellata)

beaked hazel (Corylus cornuta)

beaked skeletonweed (Shinnersoseris rostrata)

Bebb’s willow (Salix bebbiana)

Beyrich’s fleabane (Erigeron strigosus var. beyrichii)

Bicknell’s cranesbill (Geranium bicknellii)

biennial beeblossom (Gaura biennis)

big bluestem (Andropogon gerardii)

Bigelow’s bottlebrush grass (Elymus hystrix var. bigeloviana)

bigleaf aster (Eurybia macrophylla)

bigleaf lupine (Lupinus polyphyllus)

bigseed pepperweed (Lepidium densiflorum var. macrocarpum)

bigtooth aspen (Populus grandidentata)

bird’s-foot trefoil (Lotus corniculatus var. corniculatus)

birdfoot violet (Viola pedata)

bishop’s cap (Mitella diphylla)

bitternut hickory (Carya cordiformis)

bittersweet nightshade (Solanum dulcamara)

black ash (Fraxinus nigra)

black bindweed (Fallopia convolvulus)

black cherry (Prunus serotina var. serotina)

black locust (Robinia pseudoacacia)

black maple (Acer nigrum)

black medick (Medicago lupulina)

black oak (Quercus velutina)

black raspberry (Rubus occidentalis)

black spruce (Picea mariana)

black walnut (Juglans nigra)

black-eyed Susan (Rudbeckia hirta)

black-seeded plantain (Plantago rugelii var. rugelii)

bladder campion (Silene vulgaris)

bland sweet cicely (Osmorhiza claytonii)

blanket flower (Gaillardia aristata)

bloodroot (Sanguinaria canadensis)

blue ash (Fraxinus quadrangulata)

blue cohosh (Caulophyllum thalictroides)

blue giant hyssop (Agastache foeniculum)

blue grama (Bouteloua gracilis)

Blue Ridge carrion flower (Smilax lasioneura)

blue spruce (Picea pungens)

blue vervain (Verbena hastata)

blue vervain (Verbena hastata var. hastata)

blue vervain (Verbena hastata var. scabra)

bluebead lily (Clintonia borealis)

bluejoint (Calamagrostis canadensis)

bog birch (Betula pumila)

bog Labrador tea (Ledum groenlandicum)

bog rosemary (Andromeda glaucophylla)

bog willow (Salix pedicellaris)

bottle gentian (Gentiana andrewsii var. andrewsii)

bouncing bet (Saponaria officinalis)

boxelder (Acer negundo)

boxelder (Acer negundo var. negundo)

bracted spiderwort (Tradescantia bracteata)

bristly buttercup (Ranunculus hispidus)

bristly buttercup (Ranunculus hispidus var. nitidus)

bristly greenbrier (Smilax tamnoides)

brittle pricklypear (Opuntia fragilis)

broadleaf meadowsweet (Spiraea alba var. latifolia)

broad-leaved arrowhead (Sagittaria latifolia)

broad-leaved cattail (Typha latifolia)

broad-leaved helleborine (Epipactis helleborine)

brook lobelia (Lobelia kalmii)

brown-eyed Susan (Rudbeckia triloba var. triloba)

buckbean (Menyanthes trifoliata)

buffalo grass (Buchloë dactyloides)

buffalobur nightshade (Solanum rostratum)

bulbet-bearing water hemlock (Cicuta bulbifera)

bull thistle (Cirsium vulgare)

bunchberry (Cornus canadensis)

bur cucumber (Sicyos angulatus)

bur oak (Quercus macrocarpa)

bur oak (Quercus macrocarpa var. macrocarpa)

butter-and-eggs (Linaria vulgaris)

butterfly weed (Asclepias tuberosa ssp. interior)

butternut (Juglans cinerea)

calico aster (Symphyotrichum lateriflorum var. lateriflorum)

calla lily (Zantedeschia aethiopica)

Canada anemone (Anemone canadensis)

Canada cocklebur (Xanthium strumarium var. canadense)

Canada goldenrod (Solidago canadensis)

Canada goldenrod (Solidago canadensis var. canadensis)

Canada hawkweed (Hieracium kalmii)

Canada lettuce (Lactuca canadensis)

Canada mayflower (Maianthemum canadense)

Canada moonseed (Menispermum canadense)

Canada plum (Prunus nigra)

Canada thistle (Cirsium arvense)

Canada toadflax (Nuttallanthus canadensis)

Canada violet (Viola canadensis var. rugulosa)

Canada wildrye (Elymus canadensis)

Canada yew (Taxus canadensis)

Canadian horseweed (Conyza canadensis var. canadensis)

Canadian milkvetch (Astragalus canadensis var. canadensis)

Canadian tick trefoil (Desmodium canadense)

Canadian woodnettle (Laportea canadensis)

candle anemone (Anemone cylindrica)

Carolina anemone (Anemone caroliniana)

Carolina foxtail (Alopecurus carolinianus)

Carolina geranium (Geranium carolinianum)

Carolina horsenettle (Solanum carolinense var. carolinense)

Carolina spring beauty (Claytonia caroliniana var. caroliniana)

carpetweed (Mollugo verticillata)

catnip (Nepeta cataria)

charlock mustard (Sinapis arvensis)

chicory (Cichorium intybus)

chokecherry (Prunus virginiana var. virginiana)

Christmas fern (Polystichum acrostichoides)

cinnamon fern (Osmunda cinnamomea var. cinnamomea)

clammy groundcherry (Physalis heterophylla var. heterophylla)

clasping milkweed (Asclepias amplexicaulis)

clasping pepper grass (Lepidium perfoliatum)

clasping-leaved twisted-stalk (Streptopus amplexifolius)

clasping-leaved Venus’ looking-glass (Triodanis perfoliata)

cleavers (Galium aparine)

Cleland’s evening primrose (Oenothera clelandii)

cliff goldenrod (Solidago sciaphila)

common agrimony (Agrimonia gryposepala)

common bladderwort (Utricularia macrorhiza)

common blue violet (Viola sororia)

common boneset (Eupatorium perfoliatum var. perfoliatum)

common buckthorn (Rhamnus cathartica)

common burdock (Arctium minus)

common chickweed (Stellaria media ssp. media)

common cinquefoil (Potentilla simplex)

common dandelion (Taraxacum officinale ssp. officinale)

common dogmustard (Erucastrum gallicum)

common evening primrose (Oenothera biennis)

common false Solomon’s seal (Maianthemum racemosum var. racemosum)

common juniper (Juniperus communis var. depressa)

common lamb’s-quarters (Chenopodium album var. album)

common milkweed (Asclepias syriaca)

common morning-glory (Ipomoea purpurea)

common motherwort (Leonurus cardiaca)

common mullein (Verbascum thapsus)

common oat (Avena sativa)

common plantain (Plantago major)

common polypody (Polypodium virginianum)

common ragweed (Ambrosia artemisiifolia)

common St. Johnswort (Hypericum perforatum)

common sneezeweed (Helenium autumnale)

common snowberry (Symphoricarpos albus var. albus)

common sow thistle (Sonchus oleraceus)

common strawberry (Fragaria virginiana)

common sunflower (Helianthus annuus)

common tansy (Tanacetum vulgare)

common vetch (Vicia sativa)

common vetch (Vicia sativa ssp. nigra)

common vetch (Vicia sativa ssp. sativa)

common yarrow (Achillea millefolium)

common yarrow (Achillea millefolium var. millefolium)

compass plant (Silphium laciniatum var. laciniatum)

coon’s tail (Ceratophyllum demersum)

Cooper’s milkvetch (Astragalus neglectus)

cow vetch (Vicia cracca)

crimson clover (Trifolium incarnatum)

creeping bellflower (Campanula rapunculoides)

creeping juniper (Juniperus horizontalis)

creeping snowberry (Gaultheria hispidula)

crown vetch (Coronilla varia)

cuckoo flower (Cardamine pratensis)

Culver’s root (Veronicastrum virginicum)

cup plant (Silphium perfoliatum var. perfoliatum)

curly dock (Rumex crispus ssp. crispus)

curly-cup gumweed (Grindelia squarrosa)

curly-cup gumweed (Grindelia squarrosa var. quasiperennis)

curly-cup gumweed (Grindelia squarrosa var. serrulata)

curly-cup gumweed (Grindelia squarrosa var. squarrosa)

cut-leaved coneflower (Rudbeckia laciniata var. laciniata)

cut-leaved evening primrose (Oenothera laciniata)

cut-leaved toothwort (Cardamine concatenata)

cylindric blazing star (Liatris cylindracea)

Dakota gentian (Gentiana andrewsii var. dakotica)

dame’s rocket (Hesperis matronalis)

deer sedge (Carex hallii)

Deptford pink (Dianthus armeria)

desert false indigo (Amorpha fruticosa)

disk waterhyssop (Bacopa rotundifolia)

dog-fennel (Anthemis cotula)

dotted blazing star (Liatris punctata)

dotted blazing star (Liatris punctata var. punctata)

downy arrowwood (Viburnum rafinesqueanum var. rafinesqueanum)

downy gentian (Gentiana puberulenta)

downy painted cup (Castilleja sessiliflora)

downy phlox (Phlox pilosa ssp. fulgida)

downy serviceberry (Amelanchier arborea var. arborea)

downy yellow violet (Viola pubescens)

downy yellow violet (Viola pubescens var. peckii)

downy yellow violet (Viola pubescens var. pubescens)

drooping trillium (Trillium flexipes)

Drummond’s campion (Silene drummondii var. drummondii)

Dutchman’s breeches (Dicentra cucullaria)

dwarf cinquefoil (Potentilla canadensis)

dwarf false indigo (Amorpha nana)

dwarf milkweed (Asclepias ovalifolia)

early goldenrod (Solidago juncea)

early horse-gentian (Triosteum aurantiacum var. aurantiacum)

early meadow rue (Thalictrum dioicum)

early saxifrage (Saxifraga virginiensis var. virginiensis)

eastern black nightshade (Solanum ptychanthum)

eastern bottlebrush grass (Elymus hystrix)

eastern bottlebrush grass (Elymus hystrix var. hystrix)

eastern false rue anemone (Enemion biternatum)

eastern marsh fern (Thelypteris palustris var. pubescens)

eastern poison ivy (Toxicodendron radicans ssp. negundo)

eastern prickly gooseberry (Ribes cynosbati)

eastern pricklypear (Opuntia humifusa)

eastern redcedar (Juniperus virginiana var. virginiana)

eastern swamp saxifrage (Saxifraga pensylvanica)

eastern wahoo (Euonymus atropurpurea)

eastern white pine (Pinus strobus)

edible valerian (Valeriana edulis var. ciliata)

elliptic shin-leaf (Pyrola elliptica)

elm-leaved goldenrod (Solidago ulmifolia var. ulmifolia)

European black currant (Ribes nigrum)

European mountain ash (Sorbus aucuparia)

false baby’s breath (Galium molugo)

false indigo (Amorpha fruticosa)

false nettle (Boehmeria cylindrica)

false sunflower (Heliopsis helianthoides var. occidentalis)

false toadflax (Geocaulon lividum)

fen grass of Parnassus (Parnassia glauca)

few-seeded sedge (Carex oligosperma var. oligosperma)

fiddleleaf hawksbeard (Crepis runcinata)

field bindweed (Convolvulus arvensis)

field garlic (Allium vineale)

field horsetail (Equisetum arvense)

field mustard (Brassica rapa)

field pennycress (Thlaspi arvense)

field pussytoes (Antennaria neglecta)

field sagewort (Artemisia campestris)

field sagewort (Artemisia campestris ssp. caudata)

field sow thistle (Sonchus arvensis)

field sow thistle (Sonchus arvensis ssp. arvensis)

field sow thistle (Sonchus arvensis ssp. uliginosus)

field thistle (Cirsium discolor)

fireweed (Epilobium angustifolium)

flat-topped aster (Doellingeria umbellata)

flat-topped aster (Doellingeria umbellata var. pubens)

flat-topped aster (Doellingeria umbellata var. umbellata)

flexile milkvetch (Astragalus flexuosus)

Flodman’s thistle (Cirsium flodmanii)

flowering spurge (Euphorbia corollata)

forked campion (Silene dichotoma)

four-flowered yellow loosestrife (Lysimachia quadriflora)

foxtail barley (Hordeum jubatum ssp. jubatum)

fragrant bedstraw (Galium triflorum)

fragrant waterlily (Nymphaea odorata ssp. lutea)

fringed brome (Bromus ciliatus)

fringed loosestrife (Lysimachia ciliata)

fringed puccoon (Lithospermum incisum)

garden heliotrope (Valeriana officinalis)

garden phlox (Phlox paniculata)

garden radish (Raphanus sativus)

gardencress pepperweed (Lepidium sativum)

garlic mustard (Alliaria petiolata)

giant chickweed (Myosoton aquaticum)

giant foxtail (Setaria faberi)

giant goldenrod (Solidago gigantea)

giant ragweed (Ambrosia trifida var. trifida)

giant sumpweed (Cyclachaena xanthiifolia)

giant sunflower (Helianthus giganteus)

glade mallow (Napaea dioica)

goat’s rue (Tephrosia virginiana)

golden alexanders (Zizia aurea)

grape honeysuckle (Lonicera reticulata)

grass-leaved goldenrod (Euthamia graminifolia var. graminifolia)

gray dogwood (Cornus racemosa)

gray goldenrod (Solidago nemoralis)

gray goldenrod (Solidago nemoralis var. nemoralis)

gray goldenrod (Solidago nemoralis var. longipetiolata)

gray-headed coneflower (Ratibida pinnata)

grayleaf red raspberry (Rubus strigosus)

great blue lobelia (Lobelia siphilitica)

great blue lobelia (Lobelia siphilitica var. ludoviciana)

great blue lobelia (Lobelia siphilitica var. siphilitica)

great burdock (Arctium lappa)

Great Lakes gentian (Gentiana rubricaulis)

Great Plains flat sedge (Cyperus lupulinus ssp. lupulinus)

Great Plains ladies’ tresses (Spiranthes magnicamporum)

great waterleaf (Hydrophyllum appendiculatum)

great-spurred violet (Viola selkirkii)

greater fringed gentian (Gentianopsis crinita)

greater yellow lady’s slipper (Cypripedium parviflorum var. pubescens)

Grecian foxglove (Digitalis lanata)

Greek valerian (Polemonium reptans var. reptans)

green amaranth (Amaranthus hybridus)

green ash (Fraxinus pennsylvanica)

green foxtail (Setaria viridis var. viridis)

green milkweed (Asclepias viridiflora)

green needlegrass (Nassella viridula)

Green’s rush (Juncus greenei)

grooved yellow flax (Linum sulcatum var. sulcatum)

ground ivy (Glechoma hederacea)

ground plum (Astragalus crassicarpus var. crassicarpus)

hair-like beak-rush (Rhynchospora capillacea)

hairy false golden aster (Heterotheca villosa)

hairy false golden aster (Heterotheca villosa var. ballardii)

hairy false golden aster (Heterotheca villosa var. foliosa)

hairy false golden aster (Heterotheca villosa var. minor)

hairy false golden aster (Heterotheca villosa var. villosa)

hairy four o’clock (Mirabilis hirsuta)

hairy goldenrod (Solidago hispida)

hairy grama (Bouteloua hirsuta var. hirsuta)

hairy hedge nettle (Stachys hispida)

hairy honeysuckle (Lonicera hirsuta)

hairy panic grass (Dichanthelium acuminatum)

hairy puccoon (Lithospermum caroliniense var. croceum)

hairy Solomon’s seal (Polygonatum pubescens)

hairy sunflower (Helianthus hirsutus)

harebell (Campanula rotundifolia)

Harger’s goldenrod (Solidago canadensis var. hargeri)

hawthorn (Crataegus spp.)

heal-all (Prunella vulgaris)

heal-all (Prunella vulgaris var. lanceolata)

heal-all (Prunella vulgaris var. vulgaris)

heart-leaved four o’clock (Mirabilis nyctaginea)

heart-leaved golden alexanders (Zizia aptera)

heartleaf foamflower (Tiarella cordifolia var. cordifolia)

hedge bindweed (Calystegia sepium ssp. angulata)

highbush cranberry (Viburnum trilobum)

Hill’s thistle (Cirsium hillii)

hoary alyssum (Berteroa incana)

hoary frostweed (Helianthemum bicknellii)

hoary puccoon (Lithospermum canescens)

hoary vervain (Verbena stricta)

hog peanut (Amphicarpaea bracteata var. comosa)

Holzinger’s eupatorium (Eupatorium purpureum var. holzingeri)

hooded ladies’ tresses (Spiranthes romanzoffiana)

hookedspur violet (Viola adunca var. adunca)

horsemint (Monarda punctata var. villicaulis)

hound’s tongue (Cynoglossum officinale)

husk tomato (Physalis pubescens var. integrifolia)

Illinois tick trefoil (Desmodium illinoense)

Indian hemp (Apocynum cannabinum)

Indian paintbrush (Castilleja coccinea)

Indiangrass (Sorghastrum nutans)

inflated sedge (Carex vesicaria)

inland serviceberry (Amelanchier interior)

interrupted fern (Osmunda claytoniana)

ironwood (Ostrya virginiana var. virginiana)

Iowa crabapple (Malus ioensis var. ioensis)

ivy-leaved morning-glory (Ipomoea hederacea)

jack pine (Pinus banksiana)

Jack-in-the-pulpit (Arisaema triphyllum ssp. triphyllum)

James’ polanisia (Polanisia jamesii)

Japanese knotweed (Polygonum cuspidatum)

Jerusalem artichoke (Helianthus tuberosus)

jeweled shooting star (Dodecatheon amethystinum)

June grass (Koeleria macrantha)

Kennedy’s blackberry (Rubus kennedyanus)

Kentucky coffee tree (Gymnocladus dioica)

kidney-leaved buttercup (Ranunculus abortivus)

king devil hawkweed (Hieracium piloselloides)

kitten-tails (Besseya bullii)

Labrador Indian paintbrush (Castilleja septentrionalis)

lacy tansyaster (Machaeranthera pinnatifida var. pinnatifida)

lady fern (Athyrium filix-femina)

lance-leaved ragweed (Ambrosia bidenta)

large-flowered beardtongue (Penstemon grandiflorus)

large-flowered bellwort (Uvularia grandiflora)

large-flowered trillium (Trillium grandiflorum)

late horse-gentian (Triosteum perfoliatum)

leadplant (Amorpha canescens)

leafy spurge (Euphorbia esula var. esula)

leatherleaf (Chamaedaphne calyculata)

Leonard’s skullcap (Scutellaria parvula var. missouriensis)

lesser bladderwort (Utricularia minor)

lesser fringed gentian (Gentianopsis virgata ssp. virgata)

lily of the valley (Convallaria majalis)

limber honeysuckle (Lonicera dioica)

little barley (Hordeum pusillum)

little bluestem (Schizachyrium scoparium var. scoparium)

littleleaf linden (Tilia cordata)

liverleaf wintergreen (Pyrola asarifolia ssp. asarifolia)

Lombardy poplar (Populus nigra ‘Italica’)

long-bearded hawkweed (Hieracium longipilum)

long-headed coneflower (Ratibida columnifera)

long-leaved bluet (Houstonia longifolia)

long-spine sandbur (Cenchrus longispinus)

long-spurred violet (Viola rostrata)

longbract wild indigo (Baptisia bracteata var. leucophaea)

lotus milkvetch (Astragalus lotiflorus)

Louisiana bladderpod (Lesquerella ludoviciana)

Louisiana broomrape (Orobanche ludoviciana ssp. ludoviciana)

low bindweed (Calystegia spithamaea)

lowbush blueberry (Vaccinium angustifolium)

lowland rotala (Rotala ramosior)

lyre-leaved rock cress (Arabis lyrata)

Macoun’s cudweed (Pseudognaphalium macounii)

maiden pink (Dianthus deltoides)

marijuana (Cannabis sativa)

marsh arrow-grass (Triglochin palustris)

marsh bellflower (Campanula aparinoides)

marsh blue violet (Viola cucullata)

marsh grass of Parnassus (Parnassia palustris var. tenuis)

marsh hedge nettle (Stachys palustris)

marsh horsetail (Equisetum palustre)

marsh pea (Lathyrus palustris)

mat muhly (Muhlenbergia richardsonis)

mat vetch (Vicia americana var. minor)

Maximilian’s sunflower (Helianthus maximilianii)

May-apple (Podophyllum peltatum)

Mead’s sedge (Carex meadii)

meadow buttercup (Ranunculus acris)

meadow garlic (Allium canadense var. canadense)

meadow geranium (Geranium pratense)

meadow goat’s beard (Tragopogon pratensis)

meadow horsetail (Equisetum pratense)

Michigan lily (Lilium superbum)

Minnesota dwarf trout lily (Erythronium propullans)

mint-leaved bergamot (Monarda fistulosa var. menthifolia)

Missouri goldenrod (Solidago missouriensis var. fasciculata)

Missouri gooseberry (Ribes missouriense)

Missouri milkvetch (Astragalus missouriensis var. missouriensis)

money plant (Lunaria annua)

Morrow’s honeysuckle (Lonicera morrowii)

moschatel (Adoxa moschatellina)

moss phlox (Phlox subulata ssp. subulata)

mountain blue-eyed grass (Sisyrinchium montanum var. montanum)

mountain death camas (Zigadenus elegans ssp. glaucus)

mountain juneberry (Amelanchier bartramiana)

mouse-ear chickweed (Cerastium fontanum ssp. vulgare)

mouse-ear cress (Arabidopsis thaliana)

mugwort (Artemisia vulgaris)

musk thistle (Carduus nutans)

musk thistle (Carduus nutans ssp. leiophyllus)

musk thistle (Carduus nutans ssp. macrocephalus)

musk thistle (Carduus nutans ssp. macrolepis)

Mystery Plant A

nannyberry (Viburnum lentago)

narrow-leaved cattail (Typha angustifolia)

narrow-leaved four o’clock (Mirabilis linearis)

narrow-leaved hawk’s-beard (Crepis tectorum)

narrow-leaved hawkweed (Hieracium umbellatum)

narrow-leaved milkweed (Asclepias stenophylla)

narrow-leaved mountain mint (Pycnanthemum tenuifolium)

narrow-leaved purple coneflower (Echinacea angustifolia var. angustifolia)

narrow-leaved wild leek (Allium tricoccum var. burdickii)

Nebraska blazing star (Liatris punctata var. nebraskana)

needle-and-thread (Hesperostipa comata ssp. comata)

New England aster (Symphyotrichum novae-angliae)

night-flowering catchfly (Silene noctiflora)

nodding bur marigold (Bidens cernua)

nodding ladies’ tresses (Spiranthes cernua)

nodding trillium (Trillium cernuum)

nodding wild onion (Allium cernuum)

northern bedstraw (Galium boreale)

northern beech fern (Phegopteris connectilis)

northern black currant (Ribes hudsonianum)

northern blue flag (Iris versicolor)

northern bog aster (Symphyotrichum boreale)

northern bog bedstraw (Galium labradoricum)

northern bugleweed (Lycopus uniflorus)

northern bush-honeysuckle (Diervilla lonicera)

northern evening primrose (Oenothera parviflora)

northern hackberry (Celtis occidentalis)

northern lady fern (Athyrium filix-femina ssp. angustum)

northern maidenhair (Adiantum pedatum)

northern pin oak (Quercus ellipsoidalis)

northern prickly ash (Zanthoxylum americanum)

northern red oak (Quercus rubra)

northern red oak (Quercus rubra var. ambigua)

northern red oak (Quercus rubra var. rubra)

northern reed grass (Calamagrostis stricta ssp. inexpansa)

northern sagewort (Artemisia campestris ssp. borealis var. borealis)

northern shagbark hickory (Carya ovata)

northern white cedar (Thuja occidentalis)

northern wild rice (Zizania palustris var. interior)

northern winter cress (Barbarea orthoceras)

northern yellow-eyed grass (Xyris montana)

northwestern lady fern (Athyrium filix-femina ssp. cyclosorum)

Norway maple (Acer platanoides)

Norway spruce (Picea abies)

Nuttall’s alkali grass (Puccinellia nuttalliana)

Nuttall’s evening primrose (Oenothera nuttallii)

Nuttall’s sunflower (Helianthus nuttallii ssp. rydbergii)

Nuttall’s violet (Viola nuttallii)

obedient plant (Physostegia virginiana var. virginiana)

Ohio spiderwort (Tradescantia ohiensis)

oldfield blackberry (Rubus alumnus)

onerow yellowcress (Rorippa microphylla)

orange daylily (Hemerocallis fulva)

orange hawkweed (Hieracium aurantiacum)

orchard grass (Dactylis glomerata)

ostrich fern (Matteuccia struthiopteris)

oxeye daisy (Leucanthemum vulgare)

pagoda dogwood (Cornus alternifolia)

pale bastard toadflax (Comandra umbellata ssp. pallida)

pale green orchid (Platanthera flava var. herbiola)

pale touch-me-not (Impatiens pallida)

paleleaf woodland sunflower (Helianthus strumosus)

palespike lobelia (Lobelia spicata var. spicata)

palmate hop clover (Trifolium aureum)

paper birch (Betula papyrifera)

paradise apple (Malus pumila)

Parlin’s pussytoes (Antennaria parlinii)

Parlin’s pussytoes (Antennaria parlinii ssp. fallax)

Parlin’s pussytoes (Antennaria parlinii ssp. parlinii)

peachleaf willow (Salix amygdaloides)

pearly everlasting (Anaphalis margaritacea)

Pennsylvania buttercup (Ranunculus pensylvanicus)

Pennsylvania smartweed (Polygonum pensylvanicum)

Perennial evening primrose (Oenothera perennis)

Philadelphia fleabane (Erigeron philadelphicus var. philadelphicus)

pin cherry (Prunus pensylvanica var. pensylvanica)

pineapple-weed (Matricaria discoidea)

pink lady’s slipper (Cypripedium acaule)

plains blackberry (Rubus ablatus)

plains coreopsis (Coreopsis tinctoria var. tinctoria)

plains cottonwood (Populus deltoides ssp. molinifera)

plains muhly (Muhlenbergia cuspidata)

plains pricklypear (Opuntia macrorhiza)

plains snake-cotton (Froelichia floridana var. campestris)

plantain-leaved pussytoes (Antennaria plantaginifolia)

pleated gentian (Gentiana affinis)

pointed-leaved tick trefoil (Desmodium glutinosum)

poison hemlock (Conium maculatum)

poke milkweed (Asclepias exaltata)

porcupine grass (Stipa spartea)

Powell’s amaranth (Amaranthus powellii)

prairie alumroot (Heuchera richardsonii)

prairie blazing star (Liatris pycnostachya var. pycnostachya)

prairie blue-eyed grass (Sisyrinchium campestre)

prairie bush clover (Lespedeza leptostachya)

prairie cordgrass (Spartina pectinata)

prairie coreopsis (Coreopsis palmata)

prairie dropseed (Sporobolus heterolepis)

prairie fleabane (Erigeron strigosus)

prairie fleabane (Erigeron strigosus var. septentrionalis)

prairie fleabane (Erigeron strigosus var. strigosus)

prairie groundsel (Packera plattensis)

prairie ironweed (Vernonia fasciculata)

prairie ironweed (Vernonia fasciculata ssp. fasciculata)

prairie larkspur (Delphinium carolinianum ssp. virescens)

prairie lettuce (Lactuca ludoviciana)

prairie milkweed (Asclepias hirtella)

prairie moonwort (Botrychium campestre)

prairie onoin (Allium stellatum)

prairie peppergrass (Lepidium densiflorum)

prairie peppergrass (Lepidium densiflorum var. densiflorum)

prairie pinweed (Lechea stricta)

prairie ragwort (Packera plattensis)

prairie rose (Rosa arkansana)

prairie rose (Rosa arkansana var. arkansana)

prairie rose (Rosa arkansana var. suffulta)

prairie sagewort (Artemisia frigida)

prairie shooting star (Dodecatheon meadia ssp. meadia)

prairie smoke (Geum triflorum var. triflorum)

prairie spiderwort (Tradescantia occidentalis var. occidentalis)

prairie sunflower (Helianthus petiolaris ssp. petiolaris)

prairie thermopsis (Thermopsis rhombifolia)

prairie turnip (Pediomelum esculentum)

prairie violet (Viola pedatifida)

prickly lettuce (Lactuca serriola)

prickly rose (Rosa acicularis ssp. sayi)

prickly sow thistle (Sonchus asper)

prostrate knotweed (Polygonum aviculare)

purple cress (Cardamine douglasii)

purple giant hyssop (Agastache scrophulariifolia)

purple locoweed (Oxytropis lambertii var. lambertii)

purple loosestrife (Lythrum salicaria)

purple lovegrass (Eragrostis spectabilis)

purple meadow parsnip (Thaspium trifoliatum)

purple milkweed (Asclepias purpurascens)

purple pitcherplant (Sarracenia purpurea ssp. gibbosa)

purple prairie clover (Dalea purpurea var. purpurea)

purple rattlesnake root (Prenanthes racemosa)

purple rattlesnake root (Prenanthes racemosa ssp. multiflora)

purple rattlesnake root (Prenanthes racemosa ssp. racemosa)

purple sand grass (Triplasis purpurea)

purple-head sneezeweed (Helenium flexuosum)

purple-leaved willow herb (Epilobium coloratum)

purple-stem angelica (Angelica atropurpurea)

purple-stem aster (Symphyotrichum puniceum var. puniceum)

purpletop tridens (Tridens flavus var. flavus)

pussy willow (Salix discolor)

puttyroot (Aplectrum hyemale)

quaking aspen (Populus tremuloides)

Queen Anne’s lace (Daucus carota ssp. carota)

rabbit’s foot clover (Trifolium arvense)

rabbit-tobacco (Pseudognaphalium obtusifolium ssp. obtusifolium)

ragged fringed orchid (Platanthera lacera)

rattlesnake fern (Botrychium virginianum)

rattlesnake master (Eryngium yuccifolium var. yuccifolium)

red baneberry (Actaea rubra ssp. rubra)

red clover (Trifolium pratense)

red elderberry (Sambucus racemosa var. racemosa)

red maple (Acer rubrum var. rubrum)

red mulberry (Morus rubra var. rubra)

red osier dogwood (Cornus sericea ssp. sericea)

red pine (Pinus resinosa)

red sorrel (Rumex acetosella)

red three-awn (Aristida purpurea var. longiseta)

red-seeded dandelion (Taraxacum erythrospermum)

red-whisker clammy-weed (Polanisia dodecandra ssp. dodecandra)

redroot amaranth (Amaranthus retroflexus)

reed canary grass (Phalaris arundinacea)

rhombic evening primrose (Oenothera parviflora)

Riddell’s goldenrod (Oligoneuron riddellii)

Robert’s geranium (Geranium robertianum)

robust toothcup (Ammannia robusta)

rock elm (Ulmus thomasii)

rock sandwort (Minuartia dawsonensis)

rose twisted-stalk (Streptopus lanceolatus var. longipipes)

rough barnyard grass (Echinochloa muricata)

rough barnyard grass (Echinochloa muricata var. microstachya)

rough barnyard grass (Echinochloa muricata var. muricata)

rough bedstraw (Galium asprellum)

rough blazing star (Liatris aspera)

rough blazing star (Liatris aspera var. aspera)

rough blazing star (Liatris aspera var. aspera f. benkei)

rough blazing star (Liatris aspera var. intermedia)

rough bugleweed (Lycopus virginicus)

rough cinquefoil (Potentilla norvegica ssp. monspeliensis)

rough cocklebur (Xanthium strumarium)

rough cocklebur (Xanthium strumarium var. glabratum)

rough cocklebur (Xanthium strumarium var. strumarium)

rough false pennyroyal (Hedeoma hispida)

rough rattlesnake root (Prenanthes aspera)

rough-fruited cinquefoil (Potentilla recta)

rough-leaved goldenrod (Solidago patula)

rough-seeded fameflower (Talinum rugospermum)

round-headed bush clover (Lespedeza capitata)

round-leaved dogwood (Cornus rugosa)

round-leaved sundew (Drosera rotundifolia)

round-lobed hepatica (Hepatica nobilis var. obtusa)

roundleaf greenbrier (Smilax rotundifolia)

roundleaf serviceberry (Amelachier sanquinea)

rue anemone (Thalictrum thalictroides)

Russian olive (Elaeagnus angustifolia)

salebrosa goldenrod (Solidago canadensis var. salebrosa)

sandbar willow (Salix interior)

sawtooth sunflower (Helianthus grosseserratus)

scarlet beeblossom (Gaura coccinea)

scarlet Indian paintbrush (Castilleja coccinea)

scarlet Indian paintbrush (Castilleja coccinea f. coccinea)

scarlet Indian paintbrush (Castilleja coccinea f. lutescens)

scarlet toothcup (Ammannia coccinea)

Scotch pine (Pinus sylvestris)

scouring rush horsetail (Equisetum hyemale var. affine)

seaside arrowgrass (Triglochin maritima)

seaside three-awn (Aristida tuberculosa)

Seneca snakeroot (Polygala senega)

sensitive fern (Onoclea sensibilis)

sharp-lobed hepatica (Hepatica nobilis var. acuta)

Sherard’s waterhorehound (Lycopus X sherardii)

shining bedstraw (Galium concinnum)

short-awned foxtail (Alopecurus aequalis)

shorthair goldenrod (Solidago canadensis var. gilvocanescens)

showy blue lettuce (Lactuca pulchella)

showy goldenrod (Solidago speciosa)

showy goldenrod (Solidago speciosa var. jejunifolia)

showy goldenrod (Solidago speciosa var. rigidiuscula)

showy goldenrod (Solidago speciosa var. speciosa)

showy lady’s slipper (Cypripedium reginae)

showy milkweed (Asclepias speciosa)

showy orchis (Galearis spectabilis)

showy partridge pea (Chamaecrista fasciculata var. fasciculata)

shrubby cinquefoil (Potentilla fruticosa)

shy wallflower (Erysimum inconspicuum var. inconspicuum)

Siberian cranesbill (Geranium sibiricum)

Siberian elm (Ulmis pumila)

sicklepod (Arabis canadensis)

sideoats grama (Bouteloua curtipendula var. curtipendula)

silky aster (Symphyotrichum sericeum)

silky dogwood (Cornus obliqua)

silky prairie clover (Dalea villosa var. villosa)

silver maple (Acer saccharinum)

silverberry (Elaeagnus commutata)

silvergreen bryum moss (Bryum argenteum)

silverleaf grape (Vitis aestivalis var. bicolor)

silverleaf scurfpea (Pediomelum argophyllum)

silverweed (Potentilla anserina)

silvery cinquefoil (Potentilla argentea var. argentea)

skunk cabbage (Symplocarpus foetidus)

sky-blue aster (Aster oolentangiensis)

sleepy catchfly (Silene antirrhina)

slender beardtongue (Penstemon gracilis var. gracilis)

slender cinquefoil (Potentilla gracilis var. flabelliformis)

slender corydalis (Corydalis micrantha ssp. micrantha)

slender willow (Salix petiolaris)

slim-stem reedgrass (Calamagrostis stricta ssp. stricta)

slippery elm (Ulmus rubra)

small bishop’s cap (Mitella nuda)

small cranberry (Vaccinium oxycoccos)

small purple fringed orchid (Platanthera psycodes)

small white lady’s slipper (Cypripedium candidum)

small yellow lady’s slipper (Cypripedium parviflorum var. makasin)

small-leaved pussytoes (Antennaria parvifolia)

small-spike false nettle (Boehmeria cylindrica)

smallflower columbine (Aquilegia brevistyla)

smallflower grass of Parnassus (Parnassia palustris var. parviflora)

smooth blue aster (Symphyotrichum laeve var. laeve)

smooth brome (Bromus inermis)

smooth carrionflower (Smilax herbacea)

smooth hedge nettle (Stachys tenuifolia var. tenuifolia)

smooth rock cress (Arabis laevigata var. laevigata)

smooth rose (Rosa blanda var. blanda)

smooth sawgrass (Cladium mariscoides)

smooth scouring rush (Equisetum laevigatum)

smooth Solomon’s seal (Polygonatum biflorum var. commutatum)

smooth sumac (Rhus glabra)

smooth yellow violet (Viola pubescens var. scabriuscula)

snow trillium (Trillium nivale)

snowy campion (Silene nivea)

softhair marbleseed (Onosmodium molle)

softhair marbleseed (Onosmodium molle ssp. hispidissimum)

southern yellow wood sorrel (Oxalis dillenii)

sphagnum moss (Sphagnum spp.)

spikeoat (Helictotrichon hookeri)

spotted Joe Pye weed (Eutrochium maculatum)

spotted Joe Pye weed (Eutrochium maculatum var. bruneri)

spotted Joe Pye weed (Eutrochium maculatum var. foliosum)

spotted Joe Pye weed (Eutrochium maculatum var. maculatum)

spotted knapweed (Centaurea biebersteinii)

spotted lady’s thumb (Persicaria maculosa)

spotted spurge (Chamaesyce maculata)

spotted touch-me-not (Impatiens capensis)

spotted water hemlock (Cicuta maculata var. maculata)

spreading dogbane (Apocynum androsaemifolium)

spring cress (Cardamine bulbosa)

spring Whitlow grass (Draba verna)

squirrel corn (Dicentra canadensis)

staghorn sumac (Rhus hirta)

starry campion (Silene stellata)

starry false Solomon’s seal (Maianthemum stellatum)

steeplebush (Spiraea tomentosa var. rosea)

sterile sedge (Carex sterilis)

sticky false asphodel (Triantha glutinosa)

stiff cowbane (Oxypolis rigidior)

stiff goldenrod (Solidago rigida ssp. humilis)

stiff goldenrod (Solidago rigida ssp. rigida)

stiff sunflower (Helianthus pauciflorus ssp. pauciflorus)

stiff sunflower (Helianthus pauciflorus ssp. subrhomboideus)

stiffleaf false golden aster (Heterotheca stenophylla var. angustifolia)

stinging nettle (Urtica dioica ssp. gracilis)

sugar maple (Acer saccharum var. saccharum)

Sullivant's coolwort (Sullivantia sullivantii)

Sullivant’s milkweed (Asclepias sullivantii)

sundial lupine (Lupinus perennis var. perennis)

swamp betony (Pedicularis lanceolata)

swamp fly honeysuckle (Lonicera oblongifolia)

swamp loosestrife (Decodon verticillatus)

swamp milkweed (Asclepias incarnata ssp. incarnata)

swamp smartweed (Polygonum amphibium var. emersum)

swamp thistle (Cirsium muticum)

swamp white oak (Quercus bicolor)

sweet autumn virgin’s bower (Clematis terniflora)

sweet Joe Pye weed (Eupatorium purpureum)

sweet Joe Pye weed (Eupatorium purpureum var. purpureum)

sweet William catchfly (Silene armeria)

switch grass (Panicum virgatum var. virgatum)

tall bellflower (Campanulastrum americanum)

tall blue lettuce (Lactuca biennis)

tall bluebells (Mertensia paniculata var. paniculata)

tall boneset (Eupatorium altissimum)

tall cinquefoil (Potentilla arguta ssp. arguta)

tall goldenrod (Solidago canadensis var. scabra)

tall meadow rue (Thalictrum dasycarpum)

tall nutrush (Scleria triglomerata)

tall thimbleweed (Anemone virginiana)

tall thistle (Cirsium altissimum)

tamarack (Larix laricina)

tarragon (Artemisia dracunculus)

Tartarian honeysuckle (Lonicera tatarica)

tawny cottongrass (Eriophorum virginicum)

Texas goldentop (Euthamia gymnospermoides)

textile onoin (Allium textile)

thinleaf cottonsedge (Eriophorum viridicarinatum)

three-leaved false Solomon’s seal (Smilacina trifolia)

threepetal bedstraw (Galium trifidum ssp. trifidum)

tiger lily (Lilium lancifolium)

timothy (Phleum Pratense)

tiny mousetail (Myosurus minimus)

toothed evening primrose (Calylophus serrulatus)

tower mustard (Arabis glabra)

tuberous Indian plantain (Arnoglossum plantagineum)

Tuckerman’s sedge (Carex Tuckermanii)

tufted loosestrife (Lysimachia thyrsiflora)

tufted lovegrass (Eragrostis pectinacea var. pectinacea)

turion duckweed (Lemna turionifera)

tussock cottongrass (Eriophorum vaginatum var. spissum)

tussock sedge (Carex stricta)

twinflower (Linnaea borealis ssp. americana)

twinleaf (Jeffersonia diphylla)

twoflower dwarfdandelion (Krigia biflora var. biflora)

upland boneset (Eupatorium sessilifolium var. brittonianum)

upright carrionflower (Smilax ecirrhata)

variegated scouring rush (Equisetum variegatum var. variegatum)

varigated yellow pond lily (Nuphar lutea ssp. variegata)

veiny meadow-rue (Thalictrum venulosum var. confine)

veiny pea (Lathyrus venosus)

velvet-leaf (Abutilon theophrasti)

velvety goldenrod (Solidago mollis)

violet wood sorrel (Oxalis violacea)

virgin’s bower (Clematis virginiana)

Virginia bluebells (Mertensia virginica)

Virginia bugleweed (Lycopus virginicus)

Virginia creeper (Parthenocissus quinquefolia)

Virginia groundcherry (Physalis virginiana var. virginiana)

Virginia mountain mint (Pycnanthemum virginianum)

Virginia pepper grass(Lepidium virginicum var. virginicum)

Virginia spring beauty (Claytonia virginica var. virginica)

Virginia waterleaf (Hydrophyllum virginianum var. virginianum)

water horsetail (Equisetum fluviatile)

water mudwort (Limosella aquatica)

water pepper (Polygonum hydropiper)

waxy leaf meadow rue (Thalictrum revolutum)

western blue virgin’s bower (Clematis occidentalis var. occidentalis)

western bracken fern (Pteridium aquilinum var. latiusculum)

western germander (Teucrium canadense var. occidentale)

western heart-leaved groundsel (Senecio pseudaureus var. semicordata)

western ironweed (Vernonia fasciculata ssp. corymbosa)

western Jacob’s ladder (Polemonium occidentale ssp. lacustre)

western marbleseed (Onosmodium molle ssp. occidentale)

western oak fern (Gymnocarpium dryopteris)

western poison ivy (Toxicodendron rydbergii)

western prairie fringed orchid (Platanthera praeclara)

western ragweed (Ambrosia psilostachya)

western sunflower (Helianthus occidentalis ssp. occidentalis)

western tansey mustard (Descurainia pinnata var. brachycarpa)

western white prairie clover (Dalea candida var. oligophylla)

western yarrow (Achillea millefolium var. occidentalis)

wheat (Triticum aestivum)

wheat Sedge (Carex atherodes)

white ash (Fraxinus americana)

white avens (Geum canadense var. canadense)

white baneberry (Actaea pachypoda)

white bog orchid (Platanthera dilatata var. dilatata)

white campion (Silene latifolia ssp. alba)

white clover (Trifolium repens)

white heath aster (Symphyotrichum ericoides var. ericoides)

white meadowsweet (Spiraea alba var. alba)

white mulberry (Morus alba)

white oak (Quercus alba)

white panicle aster (Symphyotrichum lanceolatum)

white prairie aster (Symphyotrichum falcatum var. commutatum)

white prairie clover (Dalea candida var. candida)

white sage (Artemisia ludoviciana ssp. ludoviciana)

white snakeroot (Ageratina altissima var. altissima)

white spruce (Picea glauca)

white sweet clover (Melilotus albus)

white trout lily (Erythronium albidum)

white turtlehead (Chelone glabra)

white wild indigo (Baptisia alba var. macrophylla)

whorled milkweed (Asclepias verticillata)

whorled nut-rush (Scleria verticillata)

wild bergamot (Monarda fistulosa)

wild bergamot (Monarda fistulosa var. fistulosa)

wild bergamot (Monarda fistulosa var. mollis)

wild blue phlox (Phlox divaricata ssp. laphamii)

wild calla (Calla palustris)

wild chamomile(Matricaria recutita)

wild columbine (Aquilegia canadensis)

wild comfrey (Cynoglossum virginianum)

wild cucumber (Echinocystis lobata)

wild geranium (Geranium maculatum)

wild ginger (Asarum canadense)

wild grape (Vitis riparia)

wild leek (Allium tricoccum var. tricoccum)

wild licorice (Glycyrrhiza lepidota)

wild oat (Avena fatua)

wild oats (Uvularia sessilifolia)

wild parsnip (Pastinaca sativa)

wild quinine (Parthenium integrifolium)

wild radish (Raphanus raphanistrum)

wild sarsaparilla (Aralia nudicaulis)

wild sweet William (Phlox maculata ssp. maculata)

wild yam (Dioscorea villosa)

winged loosestrife (Lythrum alatum var. alatum)

winged pigweed (Cycloloma atriplicifolium)

winter cress (Barbarea vulgaris)

winter vetch (Vicia villosa ssp. villosa)

wolfberry (Symphoricarpos occidentalis)

wood anemone (Anemone quinquefolia var. bifolia)

wood betony (Pedicularis canadensis ssp. canadensis)

wood horsetail (Equisetum sylvaticum)

wood lily (Lilium philadelphicum var. andinum)

woodbine (Parthenocissus vitacea)

woodland lettuce (Lactuca floridana var. floridana)

woodland strawberry (Fragaria vesca ssp. americana)

woolly beachheather (Hudsonia tomentosa)

woolly burdock (Arctium tomentosum)

woolly milkweed (Asclepias lanuginosa)

woolly plantain (Plantago patagonica)

woolly sedge (Carex pellita)

woundwort (Stachys pilosa var. arenicola)

yellow alfalfa (Medicago sativa ssp. falcata)

yellow foxtail (Setaria pumila ssp. pumila)

yellow goat’s beard (Tragopogon dubius)

yellow marsh marigold (Caltha palustris var. palustris)

yellow meadow parsnip (Thaspium barbinode)

yellow star grass (Hypoxis hirsuta)

yellow sweet clover (Melilotus officinalis)

yellow trout lily (Erythronium americanum ssp. americanum)

yellow wood sorrel (Oxalis stricta)

yellow-fruited sedge (Carex annectens)

yellowish gentian (Gentiana alba)

zigzag goldenrod (Solidago flexicaulis)