Click on the scientific name of the species for a link to detailed images of the plant.
Revised May 2006
| Thumbnail | Scientific Name | Common Name | Family Name | Page Number in Carman | Start Bloom | Stop Bloom | Origin | Synonyms |
|
| Acalypha rhomboidea | common three seeded mercury | Euphorbiaceae | 0 | 6 | 10 | N | rhomboid three seeded mercury |
|
| Acalypha stryifolia | hornbeam three seeded mercury | Euphorbiaceae | 0 | 5 | 10 | N | |
|
| Acalypha virginica | Virginia three seeded mercury | Euphorbiaceae | 0 | 6 | 10 | N | copperleaf |
| Achillea millefolium | common yarrow | Asteraceae | 271 | 5.2 | 8.1 | Eu | |
| Actaea pachypoda | white baneberry | Ranunculaceae | 32 | 4.2 | 5.3 | N | doll's eyes, Actaea alba |
|
| Agalinis purpurea | purple false foxglove | Scrophulariaceae | 235 | 8 | 10 | N | Gerardia purpurea |
|
| Agalinis setacea | gerardia | Scrophulariaceae | 0 | 8 | 9 | N | thread-agalinis |
| Agalinis tenuifolia | slenderleaf false foxglove | Scrophulariaceae | 235 | 8 | 10 | N | Gerardia tenuifolia |
|
| Agastache nepetoides | yellow giant hyssop | Lamiaceae | 216 | 7 | 8 | N | |
| Ageratina altissima | white snakeroot | Asteraceae | 272 | 7 | 10 | N | Eupatorium rugosum |
|
| Agrimonia gryposepala | tall hairy agrimony | Rosaceae | 0 | 6 | 8 | N | tall agrimony |
|
| Agrimonia microcarpa | small fruited agrimony | Rosaceae | 0 | 7 | 9 | N | |
|
| Agrimonia parviflora | harvestlice | Rosaceae | 115 | 7 | 8 | N | small flowered agrimony |
| Agrimonia pubescens | soft agrimony | Rosaceae | 115 | 7 | 8 | N | |
| Agrimonia rostellata | woodland agrimony | Rosaceae | 7.2 | 9.3 | beaked agrimony | ||
|
| Agrostemma githago | common corncockle | Caryophyllaceae | 54 | 7 | 9 | ||
| Alliaria petiolata | garlic mustard | Brassicaceae | 83 | 4.3 | 5.5 | Eu | * |
| Allium canadense | meadow garlic | Liliaceae | 353 | 5.4 | 7.1 | N | * Canada garlic,wild garlic |
| Allium cernuum | nodding wild onion | Liliaceae | 353 | 7 | 9 | N | nodding onion |
|
| Allium stellatum | autumn onion | Liliaceae | 353 | 7 | 9 | N | wild onion |
|
| Allium tricoccum | ramp | Liliaceae | 353 | 6 | 7 | N | |
| Allium vineale | wild garlic | Liliaceae | 354 | 6.1 | 6 | Eu | field garlic,crow garlic,scallions |
|
| Amaranthus hybridus | pigweed | Amaranthaceae | 0 | 8 | 10 | Tr | slim amaranth |
|
| Amaranthus spinosus | spiny amaranth | Amaranthaceae | 0 | 6 | 9 | N | |
| Ambrosia artemisiifolia | common ragweed | Asteraceae | 273 | 8 | 10 | N | annual ragweed |
| Ambrosia trifida | great ragweed | Asteraceae | 273 | 8 | 10 | N | |
| Ampelopsis cordata | heartleaf ampelopsis | Vitaceae | 0 | 6 | 6 | N | |
| Amphiachyris dracunculoides | prairie broomweed | Asteraceae | 334 | 6 | 10 | N | Xanthocephalum dracunculoides |
|
| Amphicarpaea bracteata | hog peanut | Fabaceae | 124 | 8 | 9 | N | |
| Amsonia tabernaemontana | blue star | Apocynaceae | 188 | 4 | 5 | N | |
|
| Andropogon gerardii | big bluestem | Poaceae | |||||
|
| Andropogon gyrans | Elliott's bluestem | Poaceae | |||||
|
| Andropogon virginicus | broomsedge | Poaceae | 347 | 8 | 10 | N | |
|
| Anemone virginiana | thimbleweed | Ranunculaceae | 33 | 6.4 | 8.4 | N | |
| Antennaria plantaginifolia | plantain leaf pussytoes | Asteraceae | 273 | 3.4 | 5.3 | N | woman's tobacco |
| Antennaria solitaria | singlehead pussytoes | Asteraceae | 274 | 3.4 | 4.4 | N | * solitary pussytoes |
|
| Anthemis cotula | dogfennel | Asteraceae | 234 | 5 | 8 | Eu | mayweed |
| Apios americana | groundnut | Fabaceae | |||||
|
| Aplectrum hyemale | putty root | Orchidaceae | 389 | 5.1 | 5.2 | N | * |
| Apocynum cannabinum | Indian hemp | Apocynaceae | 188 | 6.1 | 7 | N | hemp dogbane |
| Aquilegia canadensis | red columbine | Ranunculaceae | 33 | 4.2 | 6.3 | N | |
|
| Arabis canadensis | sicklepod | Brassicaceae | 84 | 5.3 | 7.2 | N | * |
| Arabis laevigata | smooth rock cress | Brassicaceae | 84 | 4.1 | 5.1 | N | sickle-pod mustard |
| Arctium minus | lesser burrdock | Asteraceae | 0 | 7.3 | 11 | Eu | |
| Arisaema dracontium | green dragon | Araceae | 338 | 5.2 | 6.4 | N | |
| Arisaema triphyllum | jack in the pulpit | Araceae | 338 | 4.2 | 5 | N | |
|
| Aristida longespica | slimspike threeawn | Poaceae | 9 | 10 | N | Aristida longispica,slimspike three awn grass | |
|
| Aristida purpurascens | arrowfeather threeawn | Poaceae | |||||
|
| Aristolochia serpentaria | Virginia snakeroot | Aristolochiaceae | 27 | 5 | 6 | N | serpent's birthwort |
| Aristolochia tomentosa | pipe vine | Aristolochiaceae | 27 | 4 | 5 | N | woolly dutchman's pipe |
|
| Arnoglossum muehlenbergii | great Indian plaintain | Asteraceae | Cacalia muhlenbergii | ||||
| Aruncus dioicus | goatsbeard | Saxifragaceae | 116 | 5.4 | 6.4 | N | * |
| Arundinaria gigantea | giant cane | Poaceae | 0 | N | |||
| Asarum canadense | wild ginger | Aristolochiaceae | 28 | 4.2 | 6.1 | N | |
|
| Asclepias incarnata | swamp milkweed | Asclepiadaceae | 191 | 7 | 9 | N | |
| Asclepias quadrifolia | fourleaf milkweed | Asclepiadaceae | 192 | 4.4 | 7.2 | N | |
| Asclepias syriaca | common milkweed | Asclepiadaceae | 192 | 6.1 | 7.4 | N | |
| Asclepias tuberosa | butterflyweed | Asclepiadaceae | 193 | 5.4 | 8.3 | N | |
| Asclepias variegata | white milkweed | Asclepiadaceae | 193 | 5.4 | 6.4 | N | redring milkweed |
| Asclepias verticillata | whorled milkweed | Asclepiadaceae | 7.2 | 8.4 | |||
| Asclepias viridiflora | green comet milkweed | Asclepiadaceae | 194 | 7.2 | 8.4 | N | |
| Asclepias viridis | green antelope horn | Asclepiadaceae | 195 | 5 | 6 | N | Asclepiodora viridis |
| Asparagus officinalis | asparagus | Liliaceae | 0 | 5 | 6 | C | |
| Astragalus bibullatus | Pyne's ground plum | Fabaceae | 126 | 4 | 4 | N | limestone glade milkvetch |
| Astragalus tennesseensis | Tennessee milkvetch | Fabaceae | 127 | 4 | 5 | N | |
| Aureolaria flava | false foxglove | Scrophulariaceae | 236 | 8 | 9 | N | |
| Aureolaria pedicularia | fernleaf yellow false foxglove | Scrophulariaceae | 0 | 8 | 9 | N | Gerardia pedicularia |
| Barbarea verna | early yellowrocket | Brassicaceae | 85 | 4.1 | 6 | Eu | early wintercress |
| Barbarea vulgaris | wintercress | Brassicaceae | 85 | 4.2 | 4.4 | Eu,Am | garden yellowrocket |
|
| Belamcanda chinensis | blackberry lily | Iridaceae | 385 | 5.4 | 8.3 | As | * |
| Bidens aristosa | midwestern tickseed sunflower | Asteraceae | 279 | 8 | 11 | N | bearded beggarticks |
|
| Bidens bipinnata | Spanish needles | Asteraceae | 278 | 7 | 10 | N | |
|
| Bidens comosa | leafy-bracted tickseed | Asteraceae | 0 | 8 | 10 | N | |
| Bidens frondosa | devil's beggartick | Asteraceae | 0 | 8 | 10 | N | |
|
| Bidens laevis | bur marigold | Asteraceae | 279 | 8 | 10 | N | |
|
| Bidens polylepis | Ozark tickweed sunflower | Asteraceae | 279 | 8 | 10 | N | |
| Bignonia capreolata | crossvine | Bignoniaceae | 253 | 4.3 | 6 | N | |
| Blephilia ciliata | downy woodmint | Lamiaceae | 217 | 5.2 | 7.3 | N | downy pagoda plant |
| Blephilia hirsuta | hairy woodmint | Lamiaceae | 217 | 5 | 8 | N | hairy pagoda plant |
| Boehmeria cylindrica | false nettle | Urticaceae | 50 | 6 | 8 | N | |
| Bouteloua curtipendula | sideoats grama | Poaceae | |||||
|
| Brachyelytrum erectum | bearded shorthusk | Poaceae | |||||
|
| Brassica nigra | black mustard | Brassicaceae | 85 | 5 | 8 | Eu,As | |
| Brassica rapa | turnip mustard | Brassicaceae | 85 | 4.1 | 6 | Eu | field mustard |
| Brickellia eupatorioides | false boneset | Asteraceae | 311 | 8 | 10 | N | Kuhnia eupatorioides |
| Bromus inermis | smooth brome | Poaceae | EU | ||||
|
| Bromus japonicus | Japanese brome | Poaceae | 0 | 6 | 7 | Japanese bromegrass | |
|
| Bromus kalmii | arctic brome | Poaceae | |||||
|
| Bromus pubescens | hairy woodland brome | Poaceae | 0 | 6 | 7 | N | Bromus purgans,Canada bromegrass |
| Buglossoides arvensis | corn gromwell | Boraginaceae | 212 | 4 | 7 | Eu,As | Lithospermum arvense |
| Bupleurum rotundifolium | throughwax | Apiaceae | 0 | 7 | 8 | Eu | hare's ear |
|
| Calycocarpum lyonii | cupseed | Menispermaceae | 0 | 5 | 6 | N | |
| Calystegia sepium | hedge false bindweed | Convolvulaceae | 199 | 5.2 | 8 | N | low bindweed, Convolvulus sepium |
| Cammassia scilloides | wild hyacinth | Liliaceae | 355 | 4.2 | 4.4 | N | * |
| Campanulastrum americanum | tall bellflower | Campanulaceae | 255 | 7.3 | 10.2 | N | Campanula americana |
| Campsis radicans | trumpet creeper | Bignoniaceae | 253 | 6.4 | 8.1 | N | trumpet vine |
| Capsella bursa-pastoris | shepherd's purse | Brassicaceae | 86 | 3.3 | 11 | Eu | |
| Cardamine angustata | slender toothwort | Brassicaceae | 88 | 4.1 | 5 | N | Dentaria heterophylla |
| Cardamine bulbosa | spring cress | Brassicaceae | 87 | 4.2 | 6 | N | bulbous bittercress,Cardamine rhomboidea |
| Cardamine concatenata | cutleaf toothwort | Brassicaceae | 88 | 3.2 | 5 | N | Dentaria laciniata |
| Cardamine diphylla | crinkleroot toothwort | Brassicaceae | 87 | 3.4 | 4.4 | N | * two-leaved toothwort |
| Cardamine douglassii | limestone bittercress | Brassicaceae | 87 | 3.2 | 5.3 | N | purple cress |
| Cardamine hirsuta | bittercress | Brassicaceae | 86 | 2.4 | 3 | Eu | |
| Carduus nutans | nodding thistle | Asteraceae | 281 | 4.4 | 7.4 | Eu | nodding plumeless thistle |
|
| Carex albicans | white tinted sedge | Cyperaceae | 0 | 4 | 7 | N | Carex artitecta,white tinge sedge |
|
| Carex albursina | white bear sedge | Cyperaceae | 0 | 5 | 7 | N | |
|
| Carex blanda | woodland sedge | Cyperaceae | 0 | 5 | 7 | N | |
|
| Carex bushii | Bush's sedge | Cyperaceae | |||||
|
| Carex cephalophora | oval headed sedge | Cyperaceae | 0 | 5 | 7 | N | |
|
| Carex cherokeensis | Cherokee sedge | Cyperaceae | |||||
|
| Carex complanata | hirsute sedge | Cyperaceae | |||||
|
| Carex crawei | Crawe's sedge | Cyperaceae | |||||
|
| Carex cumberlandensis | local sedge | Cyperaceae | 0 | N | |||
|
| Carex jamesii | James' sedge | Cyperaceae | |||||
|
| Carex laxiflora | loose flowered sedge | Cyperaceae | 0 | 5 | 7 | N | |
|
| Carex pensylvanica | Pennsylvania sedge | Cyperaceae | |||||
| Carex picta | Boott's sedge | Cyperaceae | 0 | 3.2 | 4 | N | |
|
| Carex retroflexa | reflexed sedge | Cyperaceae | 0 | N | |||
|
| Carex varia | white tinted sedge | Cyperaceae | 0 | 4 | 7 | N | Carex albicans var. albicans |
|
| Carex virescens | ribbed sedge | Cyperaceae | |||||
|
| Carex willdenowii | Willdenow's sedge | Cyperaceae | |||||
| Caulophyllum thalictroides | blue cohosh | Berberidaceae | 44 | 3.4 | 5.2 | N | * |
| Ceanothus americanus | New Jersey tea | Rhamnaceae | 160 | 5 | 8 | N | |
| Centaurea cyanus | bachelor's button | Asteraceae | 282 | 4 | 6 | M | garden cornflower |
|
| Cerastium arvense | field chickweed | Caryophyllaceae | 0 | 4 | 7 | N | |
|
| Cerastium fontanum | big chickweed | Caryophyllaceae | |||||
| Cerastium vulgatum | mouse-eared chickweed | Caryophyllaceae | 0 | 4 | 11 | Eu,As | |
| Chaerophyllum procumbens | wild chervil | Apiaceae | 174 | 3 | 4 | N | spreading chervil |
| Chaerophyllum tainturieri | southern chervil | Apiaceae | 174 | 3.1 | 4 | N | hairy fruit chervil |
| Chamaecrista fasciculata | partridge pea | Fabacaeae | 129 | 6 | 9 | N | sleeping plant |
|
| Chamaecrista nictitans | partridge pea | Fabaceae | 129 | 7 | 9 | N | Cassia nictitans |
|
| Chamaelirium luteum | fairywand | Liliaceae | |||||
|
| Chamaesyce prostrata | prostrate sandmat | Euphorbiaceae | Euphorbia chamaesyce | ||||
| Chasmanthium latifolium | river oats | Poaceae | 347 | 6 | 10 | N | Uniola latifolia,Indian wood oats,spangle grass |
| Chelone glabra | white turtlehead | Scrophulariaceae | |||||
|
| Chenopodium album | lamb's quarters | Chenopodiaceae | 51 | 8 | 10 | Eu,As | |
| Chimaphila maculata | pipsissewa; spotted wintergreen | Pyrolaceae | 0 | 6.2 | 7.2 | N | * |
| Cichorium intybus | chicory | Asteraceae | 283 | 5.3 | 9.4 | Eu, A | |
|
| Cicuta maculata | spotted water hemlock | Apiaceae | 6.4 | 8.3 | |||
| Cimicifuga racemosa | black cohosh | Ranunculaceae | 34 | 5 | 7 | N | |
| Circaea lutetiana | enchanter's nightshade | Onagraceae | 148 | 6 | 8 | N | |
| Cirsium altissimum | tall thistle | Asteraceae | |||||
|
| Cirsium discolor | field thistle | Asteraceae | 284 | 7 | 10 | N | |
|
| Cirsium muticum | swamp thistle | Asteraceae | 285 | 7 | 10 | N | |
| Cirsium vulgare | bull thistle | Asteraceae | 286 | 6.1 | 10 | Eu,As | |
| Claytonia virginica | spring beauty | Portulacaceae | 53 | 3.3 | 5.2 | N | |
| Clematis versicolor | pale leather flower | Ranunculaceae | |||||
| Clematis viorna | vasevine | Ranunculaceae | 35 | 5.4 | 7 | N | leather flower |
| Clematis virginiana | virgin's bower | Ranunculaceae | 36 | 7 | 9 | N | |
| Clinopodium glabellum | glade savory | Lamiaceae | 217 | 5.2 | 8 | N | Ozark calamint,Calamintha glabella,Satureja glabella |
|
| Clitoria mariana | butterfly pea | Fabaceae | 129 | 6 | 8 | N | |
| Cocculus carolinus | Carolina snailseed | Menispermaceae | 0 | 6 | 8 | N | |
|
| Collinsonia canadensis | citronella; horse balm | Lamiaceae | 218 | 7 | 9 | N | |
|
| Comandra umbellata | bastard toadflax | Santalaceae | 156 | 4 | 5 | N | |
| Commelina communis | Asiatic dayflower | Commelinaceae | 341 | 7.2 | 9.4 | As | common dayflower |
| Commelina erecta | slender dayflower | Commelinaceae | 342 | 6.4 | 10 | N | white mouth dayflower,erect dayflower |
|
| Commelina virginica | Virginia dayflower | Commelinaceae | |||||
| Conium maculatum | poison hemlock | Apiaceae | 175 | 5.2 | 6 | Eu | |
| Conoclinium coelestinum | blue mistflower | Asteraceae | 286 | 7 | 10 | N | Eupatorium coelestinum,mistflower |
| Conopholis americanus | squawroot | Orobanchaceae | 250 | 4.2 | 6.1 | N | * |
| Conyza canadensis | horseweed | Asteraceae | 0 | 8 | 10 | N | |
|
| Corallorhiza wisteriana | coral root | Orchidaceae | 391 | 4.3 | 4.3 | N | * |
| Coreopsis lanceolata | lance leaf tickseed | Asteraceae | 287 | 5.2 | 6.4 | N | lance leaf coreopsis |
| Coreopsis major | whorled leaf coreopsis | Asteraceae | 287 | 5.4 | 7.4 | N | greater tickseed,forest tickseed |
| Coreopsis tinctoria | golden tickseed | Asteraceae | 288 | 6 | 8 | N | garden coreopsis |
|
| Coreopsis tripteris | tall tickseed | Asteraceae | 288 | 7 | 9 | N | tall coreopsis |
| Coronilla varia | purple crown vetch | Fabaceae | 130 | 5.2 | 8.4 | Eu | |
| Corydalis flavula | yellow corydalis | Fumariaceae | 48 | 3.4 | 4.4 | N | |
| Crepis pulchra | small flowered hawksbeard | Asteraceae | 0 | 4.4 | 7 | E | |
| Croton capitatus | hogwort | Euphorbiaceae | 157 | 6 | 10 | N | |
| Croton monanthogynus | lemon spurge | Euphorbiaceae | 157 | 6 | 10 | N | prairie tea |
| Cruciata pedemontana | piedmont bedstraw | Rubiaceae | 4 | 6 | N | Galium pedemontanum | |
| Cryptotaenia canadensis | Canadian honewort | Apiaceae | 176 | 5.2 | 7.3 | N | |
|
| Cuscuta gronovii | dodder | Cuscutaceae | 199 | 8 | 10 | N | love vine |
| Cynoglossum virginianum | wild comfrey | Boraginaceae | 210 | 4.3 | 5.4 | N | |
| Cyperus echinatus | globe flatsedge | Cyperaceae | 7.1 | 9 | N | Cyperus ovularis | |
|
| Cyperus erythrozhizos | redroot flatsedge | Cyperaceae | 8 | 10 | Nam | ||
|
| Cyperus squarrosus | bearded flatsedge | Cyperaceae | 7 | 9 | N | Cyperus inflexus | |
| Dactylis glomerata | orchard grass | Poaceae | 5 | 6 | EU | ||
| Dalea candida | white prairie clover | Fabaceae | 131 | 6 | 7 | N | Petalostemum candidum |
|
| Dalea foliosa | leafy prairie clover | Fabaceae | 131 | 7 | 9 | N | Petalostemon foliosus |
| Dalea gattingeri | Gattinger's prairie clover | Fabaceae | 132 | 5.2 | 9 | N | purpletassels, Petalostemon gattingeri |
| Dalea purpurea | purple prairie clover | Fabaceae | |||||
|
| Danthonia spicata | poverty oatgrass | Poaceae | |||||
| Dasistoma macrophylla | mullein foxglove | Scrophulariaceae | N | ||||
| Datura stramonium | jimson weed | Solanaceae | 196 | 6.1 | 8 | N | |
| Daucus carota | Queen Anne's lace | Apiaceae | 176 | 5.2 | 9.3 | Eu, A | |
| Delphinium carolinianum ssp. calciphilum | prairie larkspur | Ranunculaceae | 38 | 5 | 7 | N | Delphinium virescens |
| Delphinium tricorne | dwarf larkspur | Ranunculaceae | 37 | 3.4 | 5.2 | N | |
| Desmanthus illinoensis | prairie mimosa | Fabaceae | 132 | 6 | 7 | N | prairie bundleflower |
|
| Desmodium cuspidatum | largebract tick trefoil | Fabaceae | 0 | 8 | 9 | N | |
|
| Desmodium dillenii | Dillenius' tick trefoil | Fabaceae | 0 | 6 | 9 | N | Desmodium glabellum |
|
| Desmodium glutinosum | pointed leaved tick trefoil | Fabaceae | 0 | 6.4 | 8.1 | N | |
| Desmodium nudiflorum | naked flowered tick trefoil | Fabaceae | 0 | 7.2 | 9.2 | N | |
|
| Desmodium paniculatum | panicled leaf tick trefoil | Fabaceae | 133 | 7 | 8 | N | |
| Desmodium pauciflorum | fewflower ticktrefoil | Fabaceae | |||||
| Desmodium perplexum | perplexed tick trefoil | Fabaceae | 0 | 6 | 9 | N | sticktights |
|
| Desmodium rotundifolium | prostrate ticktrefoil | Fabaceae | |||||
| Dianthus armeria | Deptford pink | Caryophyllaceae | 55 | 6.3 | 7.4 | Eu | * |
|
| Diarrhena americana | American beakgrain | Poaceae | |||||
| Dicentra cucullaria | dutchman's breeches | Fumariaceae | 49 | 3.3 | 4 | N | |
|
| Dichanthelium acuminatum var. fasciculatum | western panic grass | Poaceae | 0 | 6 | 9 | N | Panicum lanuginosum,hairy panic grass |
|
| Dichanthelium boscii | Bosc's panicgrass | Poaceae | |||||
|
| Dichanthelium dichotomum var. dichotomum | cypress panicgrass | Poaceae | 0 | 5 | 8 | N | Panicum annulum,ringed panic grass, Panicum dichotomum ,bushy panic grass |
|
| Dichanthelium latifolium | broadleaf rosette grass | Poaceae | |||||
| Dichanthelium laxiflorum | openflower rosette grass | Poaceae | N | Panicum laxiflorum, lax Panicum xalapense, flowered panicum, | |||
|
| Dichanthelium oligosanthes var. scribnerianum | Scribner's rosette grass | Poaceae | 0 | 5 | 11 | N | Panicum helleri |
|
| Dichanthelium sphaerocarpon var. sphaerocarpon | roundseed panic grass | Poaceae | 0 | 5 | 6 | N | Panicum sphaerocarpon,round fruited panic grass |
|
| Dicliptera brachiata | branched foldwing | Acanthaceae | 6 | 11 | N | ||
|
| Diodia teres | rough buttonweed | Rubiaceae | 260 | 6 | 9 | N | poor joe |
|
| Diodia virginiana | buttonweed | Rubiaceae | 261 | 7 | 8 | N | |
| Dioscorea oppositifolia | cinnamon vine | Dioscoreaceae | 384 | 6 | 8 | As,C | Dioscorea batatas |
| Dioscorea villosa | wild yam | Dioscoreaceae | 384 | 5.1 | 8 | N | Dioscorea quaternata,colic root |
| Dipsacus fullonum | teasel | Dipsacaceae | 271 | 7.3 | 9 | Eu | Dipsacus sylvestris,fuller's teasel |
| Dodecatheon meadia | shooting star | Primulaceae | 104 | 4.2 | 6.1 | N | pride of Ohio |
| Draba verna | spring draba | Brassicaceae | 89 | 2 | 4 | Eu,NA | whitlow grass |
| Duchesnea indica | Indian strawberry | Rosaceae | 116 | 3.3 | 10 | As | |
| Echinacea purpurea | eastern purple coneflower | Asteraceae | 290 | 6.1 | 10 | N | |
| Echinacea simulata | prairie purple coneflower | Asteraceae | 290 | 5.3 | 7 | N | wavyleaf purple coneflower |
| Echinacea tennesseensis | Tennessee purple coneflower | Asteraceae | 291 | 5.3 | 7 | N | |
|
| Eclipta prostrata | yerba de tajo | Asteraceae | 291 | 8 | 10 | NAm | |
| Eleocharis compressa | flatstem spikerush | Cyperaceae | 4.3 | 7 | NAm | ||
| Elephantopus carolinianus | leafy elephant's foot | Asteraceae | 292 | 8 | 9 | N | |
|
| Elymus hystrix | eastern bottlebrush grass | Poaceae | |||||
|
| Elymus villosus | downy wild rye | Poaceae | 0 | 7 | 8 | N | |
|
| Elymus virginicus | Virginia wildrye | Poaceae | |||||
| Enemion biternatum | false rue anemone | Ranunculaceae | 38 | 3.3 | 5 | N | Isopyrum biteratum |
| Epifagus virginiana | beech drops | Orobanchaceae | 250 | 7 | 11 | N | |
|
| Eragrostis spectabilis | purple lovegrass | Poaceae | 0 | 7 | 10 | N | |
|
| Erechtites hieraciifolia | pilewort | Asteraceae | 292 | 8 | 9 | N | Erechtites hieracifolia,fireweed,American burnweed |
| Erigenia bulbosa | harbinger of spring | Apiaceae | 177 | 3.1 | 4.2 | N | |
| Erigeron annuus | eastern daisy fleabane | Asteraceae | 293 | 5.3 | 10.2 | N | |
| Erigeron philadelphicus | Philadelphia fleabane | Asteraceae | 293 | 4.2 | 6.1 | N | |
| Erigeron pulchellus | robin's plantain | Asteraceae | 293 | 4.3 | 5.4 | N | |
| Erigeron strigosus | lesser daisy fleabane | Asteraceae | 293 | 5.2 | 8 | N | prairie fleabane |
| Eryngium yuccifolium | button eryngo | Apiaceae | 7.1 | 8.1 | rattlesnake master | ||
| Erythronium albidum | white trout lily | Liliaceae | 359 | 3.4 | 4.2 | N | * |
| Erythronium americanum | trout lily | Liliaceae | 359 | 3.4 | 4.4 | N | dogtooth violet |
|
| Eupatorium album | white bracted thoroughwort | Asteraceae | 294 | 7 | 9 | N | white thoroughwort |
| Eupatorium altissimum | tall thoroughwort | Asteraceae | 294 | 8 | 10 | N | |
|
| Eupatorium capillifolium | sweet Annie | Asteraceae | 294 | 9 | 10 | N | dog fennel |
| Eupatorium fistulosum | hollow joe-pye-weed | Asteraceae | 295 | 7 | 9 | N | joe pye weed |
|
| Eupatorium maculatum | spotted joe pye weed | Asteraceae | 295 | 7 | 9 | N | |
|
| Eupatorium perfoliatum | common boneset | Asteraceae | 296 | 8 | 10 | N | |
|
| Eupatorium purpureum | sweetscented joe pye weed | Asteraceae | 295 | 7 | 9 | N | |
| Eupatorium serotinum | late flowering throughwort | Asteraceae | 297 | 8 | 10 | N | late boneset |
|
| Eupatorium sessilifolium | upland boneset | Asteraceae | 296 | 8 | 9 | N | |
| Euphorbia commutata | tinted woodland spurge | Euphorbiaceae | 158 | 4.2 | 5.3 | N | early spurge |
| Euphorbia corollata | flowering spurge | Euphorbiaceae | 158 | 6.4 | 9.2 | N | |
|
| Euphorbia cyathophora | fire on the mountain | Euphorbiaceae | 0 | 6 | 8 | N | |
|
| Euphorbia glyptosperma | ridge seeded spurge | Euphorbiaceae | 0 | 6 | 10 | NAm | |
|
| Euphorbia maculata | prostrate spurge | Euphorbiaceae | 0 | 5 | 10 | N | |
|
| Euphorbia mercurialina | mercury spurge | Euphorbiaceae | |||||
| Evolvulus nuttallianus | shaggy dwarf morning-glory | Convolvulaceae | N | ||||
|
| Festuca subverticillata | nodding fescue | Poaceae | 0 | 6 | 7 | N | Festuca obtusa |
|
| Fleischmannia incarnata | pink thoroughwort | Asteraceae | 286 | 8 | 10 | N | Eupatorium incarnatum |
| Fragaria virginiana | wild strawberry | Rosaceae | 117 | 4.2 | 5 | N | |
| Frasera caroliniensis | American columbo | Gentianaceae | 185 | 4.4 | 7.1 | N | * Swertia caroliniensis |
|
| Galactia volubilis | hairy milk pea | Fabaceae | 133 | 7 | 8 | N | downy milk pea |
| Galearis spectabilis | showy orchis | Orchidaceae | 394 | 4.3 | 5 | N | |
|
| Galinsoga quadriradiata | common quickweed | Asteraceae | 0 | 6.4 | 7.3 | SAm | |
| Galium aparine | cleavers | Rubiaceae | 261 | 4.2 | 6.3 | N | |
|
| Galium asprellum | rough bedstraw | Rubiaceae | 0 | 6 | 8 | NAm | |
| Galium circaezans | wild licorice | Rubiaceae | 261 | 5.4 | 7.4 | N | |
|
| Galium trifolium | fragrant bedstraw | Rubiaceae | 261 | 6.4 | 8.4 | N | |
|
| Gamochaeta americana | American everlasting | Asteraceae | Gnaphalium sp | ||||
| Gamochaeta purpurea | spoonleaf purple everlasting | Asteraceae | 298 | 4.3 | 10 | N | purple cudweed, Gnaphalium purpureum |
| Gaura filipes | slender gaura | Onagraceae | slenderstalk beeblossom | ||||
|
| Gentiana saponaria | harvestbells | Gentianaceae | 185 | 9 | 10 | N | soapwort gentian |
| Geranium carolinianum | pink Carolina cranesbill | Geraniaceae | 170 | 4.3 | 8 | N | Carolina geranium |
| Geranium dissectum | red cranesbill | Geraniaceae | 0 | 5 | 6 | Eu,As | cutleaf geranium |
| Geranium maculatum | spotted geranium | Geraniaceae | 170 | 4.2 | 5.3 | N | wild geranium |
| Geranium molle | dove's foot cranesbill | Geraniaceae | 171 | 4.3 | 9 | N | dovefoot geranium |
|
| Geranium pusillum | small geranium | Geraniaceae | 0 | 5 | 9 | Eu | small-flowered cranesbill |
|
| Geum aleppicum | yellow avens | Rosaceae | 0 | 6 | 8 | N | Geum strictum |
| Geum canadense | white avens | Rosaceae | 117 | 6.4 | 8.4 | N | |
|
| Geum laciniatum | rough avens | Rosaceae | 0 | 6 | 7 | N | |
| Geum vernum | spring avens | Rosaceae | 117 | 4.3 | 5 | N | |
|
| Geum virginianum | cream avens | Rosaceae | |||||
| Glandularia canadensis | rose vervain | Verbenaceae | 214 | 3.4 | 9 | N | Verbena canadensis,rose mock vervain |
| Glechoma hederacea | ground ivy | Lamiaceae | 220 | 3.4 | 5.4 | Eu,As | |
|
| Glyceria striata | fowl mannagrass | Poaceae | |||||
| Goodyera pubescens | downy rattlesnake plantain | Orchidaceae | 395 | 7.3 | 9.1 | N | |
| Grindelia lanceolata | narrowleaf gum weed | Asteraceae | 299 | 6 | 9 | N | |
|
| Hedeoma pulegioides | American pennyroyal | Lamiaceae | 0 | 7 | 9 | N | |
| Hedera helix | English ivy | Araliaceae | 7.2 | 9 | Eu | ||
| Hedyotis nigricans | glade bluet | Rubiaceae | 263 | 5.3 | 8 | N | Houstonia nigricans,diamondflowers |
| Helenium amarum | fine leaved sneezeweed | Asteraceae | 299 | 7.2 | 10 | N | Helenium tenuifolium,bitterweed,yellowdicks |
| Helenium flexuosum | purplehead sneezeweed | Asteraceae | 300 | 9 | 10 | N | |
| Helianthus angustifolius | narrow leaf sunflower | Asteraceae | 301 | 8 | 10 | N | swamp sunflower |
|
| Helianthus decapetalus | thinleaf sunflower | Asteraceae | 0 | 8 | 9 | N | |
|
| Helianthus divaricatus | woodland sunflower | Asteraceae | 302 | 7.2 | 9.2 | N | |
| Helianthus eggertii | Eggert's sunflower | Asteraceae | |||||
|
| Helianthus hirsutus | hairy sunflower | Asteraceae | |||||
| Helianthus microcephalus | small headed sunflower | Asteraceae | 303 | 8 | 9 | N | small woodland sunflower |
|
| Helianthus tuberosus | Jerusalem artichoke | Asteraceae | 305 | 8 | 10 | N | |
|
| Heliopsis helianthoides | smooth oxeye | Asteraceae | 7.3 | 10.1 | |||
| Heliotropium tenellum | slender heliotrope | Boraginaceae | 211 | 6 | 8 | N | pasture heliotrope |
| Hemerocallis fulva | day lily | Liliaceae | 360 | 5.4 | 7.2 | C,G | |
| Hepatica nobilis var. acuta | sharp lobed hepatica | Ranunculaceae | 39 | 3.2 | 4.3 | N | * Hepatica acutiloba,sharplobe hepatica |
| Hesperis matronalis | dame's rocket | Brassicaceae | 90 | 4.4 | 7 | Eu | |
|
| Heterotheca camporum | prairie golden aster | Asteraceae | 306 | 8 | 9 | N | Chrysopsis camporum,lemonyellow false golden aster |
| Heuchera americana | common alumroot | Saxifragaceae | 109 | 4.4 | 7.1 | NAm | American alumroot |
| Heuchera villosa | hairy alumroot | Saxifragaceae | 109 | 5.4 | 7.2 | N | * |
|
| Hibiscus moscheutos | swamp mallow | Malvaceae | 69 | 6 | 9 | N | |
| Hibiscus syriacus | rose of Sharon | Malvaceae | 69 | 7 | 9 | C | |
|
| Hieracium scabrum | rough hawkweed | Asteraceae | 0 | 7 | 9 | N | |
| Houstonia caerulea | azure bluet | Rubiaceae | 262 | 3.4 | 5 | N | |
| Houstonia purpurea var. purpurea | summer bluets | Rubiaceae | 264 | 4.2 | 6.1 | N | * Hedyotis purpurea, Houstonia purpurea,Venus' pride |
| Houstonia pusilla | least bluet | Rubiaceae | 262 | 3.4 | 4 | N | Hedyotis crassifolia,tiny bluet,Houstonia patens |
| Hybanthus concolor | green violet | Violaceae | 72 | 4 | 6 | N | |
| Hydrangea arborescens | wild hydrangea | Hydrangeaceae | 110 | 5.3 | 9.2 | N | |
| Hydrangea quercifolia | oakleaf hydrangea | Hydrangeaceae | |||||
| Hydrastis canadensis | golden seal | Ranunculaceae | 40 | 4.2 | 5.2 | N | * |
| Hydrophyllum appendiculatum | great waterleaf | Hydrophyllaceae | 206 | 4.4 | 6 | N | appendaged waterleaf |
|
| Hydrophyllum canadense | bluntleaf waterleaf | Hydrophyllaceae | 206 | 6.4 | 8.3 | N | Canada waterleaf |
|
| Hydrophyllum macrophyllum | hairy waterleaf | Hydrophyllaceae | 207 | 4.4 | 6 | N | large leaf waterleaf |
|
| Hymenocallis caroliniana | spider lily | Liliaceae | 381 | 8 | 8 | N | |
|
| Hypericum dolabriforme | straggling St. John's wort | Clusiaceae | 6.3 | 8.3 | * | ||
| Hypericum frondosum | cedarglade St. John's wort | Clusiaceae | 63 | 5 | 7 | N | golden St. Johnswort |
|
| Hypericum hypericoides | St. Andrew's cross | Clusiaceae | 64 | 6 | 8 | N | Ascyrum hypericoides |
| Hypericum hypericoides ssp. multicaule | St. Andrew's cross | Clusiaceae | N | Hypericum stragulum | |||
| Hypericum punctatum | spotted St. John's wort | Clusiaceae | 66 | 6 | 8 | N | |
| Hypericum sphaerocarpum | rough fruited St. John's wort | Clusiaceae | 66 | 6 | 8 | N | roundseed St. John's wort |
| Hypoxis hirsuta | yellow stargrass | Amaryllidaceae | 381 | 4.1 | 6.1 | N | common goldstar |
| Impatiens capensis | orange spotted touch me not | Balsaminaceae | 171 | 5.4 | 9 | N | |
| Impatiens pallida | yellow touch me not | Balsaminaceae | 172 | 5.4 | 8.3 | N | |
| Iodanthus pinnatifidus | purple rocket | Brassicaceae | 91 | 4.4 | 6.2 | N | |
|
| Ionactis linariifolius | flaxleaf whitetop aster | Asteraceae | Aster linariifolius | ||||
| Ipomoea hederacea | ivy leaved morning glory | Convolvulaceae | 200 | 6 | 10 | Tr | |
| Ipomoea lacunosa | small white morning glory | Convolvulaceae | 201 | 8 | 10 | Tr | |
| Ipomoea pandurata | wild potato vine | Convolvulaceae | 201 | 5.4 | 8.4 | N | * |
| Ipomoea purpurea | common morning glory | Convolvulaceae | 202 | 7 | 10 | Tr | |
| Iris cristata | dwarf crested iris | Iridaceae | 386 | 4.3 | 5.3 | N | |
| Isanthus brachiatus | false pennyroyal | Lamiaceae | 233 | 7 | 9 | N | |
| Jeffersonia diphylla | twinleaf | Berberidaceae | 45 | 3.1 | 4.2 | N | * |
|
| Juncus dichotomus | forked rush | Juncaceae | 0 | 6 | 9 | N | |
|
| Juncus dudleyi | Dudley's rush | Juncaceae | 0 | 6 | 9 | N | |
|
| Juncus effusus | common rush | Juncaceae | |||||
|
| Juncus scirpoides | needle pod rush | Juncaceae | 0 | 7 | 9 | N | |
|
| Juncus tenuis | slender rush | Juncaceae | 0 | 6 | 9 | N | |
| Justicia americana | American water willow | Acanthaceae | 251 | 6 | 9 | N | swamp loosestrife |
| Krigia biflora | two flower dwarf dandelion | Asteraceae | 310 | 4.3 | 7.1 | N | two flowered cynthia,orange dwarf dandelion |
| Krigia dandelion | potato dwarf dandelion | Asteraceae | 310 | 4.4 | 6.2 | N | potato dandelion |
|
| Krigia virginica | Virginia dwarf dandelion | Asteraceae | 310 | 4 | 6 | N | |
|
| Kummerowia stipulacea | Korean bush clover | Fabaceae | As | Korean clover, Lespedeza stipulacea | |||
| Lactuca canadensis | wild lettuce | Asteraceae | 311 | 7.1 | 8.3 | N | Canada lettuce |
| Lactuca floridana | tall blue lettuce | Asteraceae | 311 | 6 | 9 | N | woodland lettuce,Florida blue lettuce |
| Lactuca serriola | prickly lettuce | Asteraceae | 311 | 6.1 | 9 | Eu | |
| Lamium amplexicaule | henbit | Lamiaceae | 220 | 2.4 | 11 | Eu,As | |
| Lamium purpureum | red dead nettle | Lamiaceae | 221 | 3.4 | 5.1 | Eu,As | |
| Laportea canadensis | wood nettle | Urticaceae | 50 | 7.3 | 8.4 | N | |
| Lathyrus latifolius | everlasting pea | Fabaceae | 134 | 5.4 | 8 | Eu | Lathyrus latifolia,perennial pea |
|
| Leavenworthia crassa | fleshy fruit glade cress | Brassicaceae | |||||
|
| Leavenworthia exigua | Tennessee glade cress | Brassicaceae | 91 | 3 | 4 | N | pasture glade cress |
| Leavenworthia stylosa | long styled glade cress | Brassicaceae | 92 | 3.2 | 5 | N | cedar glade cress, Nashville Mustard |
|
| Leavenworthia torulosa | beaded glade cress | Brassicaceae | 92 | 3 | 5 | N | necklace glade cress |
|
| Leavenworthia uniflora | small glade cress | Brassicaceae | 93 | 2 | 5 | N | Michaux's glade cress |
|
| Leersia oryzoides | rice cutgrass | Poaceae | 0 | 8 | 9 | N | |
|
| Leersia virginica | whitegrass | Poaceae | |||||
|
| Lemna minor | common duckweed | Lemnaceae | N | lesser duckweed | |||
|
| Lemna perpusilla | duckweed | Lemnaceae | N | ||||
|
| Leonurus cardiaca | common motherwort | Lamiaceae | 0 | 6 | 9 | Eu | |
| Lepidium campestre | field pepperweed | Brassicaceae | Eu | ||||
| Lepidium virginicum | poor man's pepper | Brassicaceae | 93 | 5.2 | 11 | N | peppergrass, Virginia pepperweed |
| Lespedeza bicolor | shrub lespedeza | Fabaceae | 135 | 7 | 10 | As | bicolor lespedeza |
| Lespedeza cuneata | Chinese lespedeza | Fabaceae | 0 | 7 | 9 | As | |
|
| Lespedeza hirta | hairy bush clover | Fabaceae | 0 | 8 | 10 | N | |
|
| Lespedeza virginica | slender bush clover | Fabaceae | 135 | 8 | 9 | N | |
| Lesquerella densipila | Duck River bladderpod | Brassicaceae | 94 | 3.2 | 5 | N | |
| Lesquerella globosa | Short's bladderpod | Brassicaceae | 94 | 4 | 5 | N | |
| Lesquerella lescurii | Nashville mustard | Brassicaceae | 95 | 3.4 | 5 | N | |
|
| Lesquerella lyrata | lyreleaf bladderpod | Brassicaceae | |||||
| Lesquerella perforata | Spring Creek bladderpod | Brassicaceae | 95 | 3.2 | 4 | N | |
| Lesquerella stonensis | Stones River bladderpod | Brassicaceae | 96 | 3.3 | 4 | N | |
| Leucanthemum vulgare | ox eye daisy | Asteraceae | 282 | 4.4 | 10 | Eu,As | Chrysanthemum leucanthemum |
| Liatris aspera | tall blazing star | Asteraceae | 312 | 8 | 10 | N | rough blazing star |
| Liatris spicata | dense blazing star | Asteraceae | 313 | 7.2 | 9 | N | |
| Liatris squarrosa | scaly blazing star | Asteraceae | 314 | 7.2 | 10.2 | N | |
|
| Lilium michiganense | Michigan lily | Liliaceae | 7.2 | 7.3 | |||
| Lilium superbum | turk's cap lily | Liliaceae | |||||
| Linum usitatissimum | common flax | Linaceae | 0 | 6 | 9 | Eu | |
|
| Liparis liliifolia | large twayblade | Orchidaceae | 397 | 5.2 | 6.4 | N | * |
| Lithospermum canescens | hoary puccoon | Boraginaceae | 212 | 4.1 | 5 | N | |
| Lithospermum tuberosum | southern stoneseed | Boraginaceae | 212 | 5 | 6 | N | tuberous stoneseed |
| Lobelia appendiculata var. gattingeri | Gattinger's lobelia | Campanulaceae | 256 | 5.2 | 6 | N | |
| Lobelia cardinalis | cardinal flower | Campanulaceae | 257 | 7 | 9 | N | |
| Lobelia inflata | Indian tobacco | Campanulaceae | 257 | 7.2 | 10.2 | N | * |
| Lobelia puberula | downy lobelia | Campanulaceae | N | ||||
| Lobelia siphilitica | great blue lobelia | Campanulaceae | 258 | 10 | 11 | N | |
|
| Lobelia spicata | pale spike lobelia | Campanulaceae | N | ||||
| Lonicera sempervirens | coral honeysuckle | Caprifoliaceae | 267 | 4.3 | 7 | N | trumpet honeysuckle |
|
| Lotus corniculatus | birdfoot deervetch | Fabaceae | 136 | 6 | 8 | Eu | birdsfoot trefoil |
|
| Ludwigia alternifolia | seedbox | Onagraceae | 150 | 5 | 10 | N | |
|
| Ludwigia decurrens | wingstem water primrose | Onagraceae | 150 | 6 | 10 | N | |
|
| Ludwigia palustris | water purslane | Onagraceae | 0 | 6 | 11 | N | marsh purslane |
| Luzula bulbosa | bulbous woodrush | Juncaceae | 5.2 | N | |||
|
| Luzula echinata | hedgehog wood rush | Juncaceae | 0 | 5 | 6 | N | |
|
| Lysimachia ciliata | fringed loosestrife | Primulaceae | 6.4 | 7.3 | |||
| Lysimachia quadrifolia | whorled yellow loosestrife | Primulaceae | 106 | 5.4 | 6.4 | N | |
| Lythrum salicaria | purple loosestrife | Lythraceae | 147 | 6 | 9 | Eu | |
| Maianthemum racemosum ssp. racemosum | false Solomon's seal | Liliaceae | 367 | 4.2 | 5.4 | N | * Smilacina racemosa,feathery false lily of the valley |
|
| Malva neglecta | cheeses | Malvaceae | 0 | 4 | 10 | Eu,As | |
| Manfreda virginica | false aloe | Agavaceae | 382 | 6 | 7 | N | Agave virginica |
| Matelea carolinensis | maroon Carolina milkvine | Asclepiadaceae | 195 | 6.4 | 7 | N | spiny-pod |
| Matelea gonocarpos | common anglepod | Asclepiadaceae | 195 | 6 | 7 | N | Matelea gonocarpa,angular milkvine |
|
| Melica mutica | twoflower melic | Poaceae | 0 | 4 | 5 | N | twoflower melic grass |
| Melilotus alba | white sweet clover | Fabaceae | 5.4 | 8.4 | Eu | ||
| Melilotus officinalis | yellow sweet clover | Fabaceae | 137 | 5.4 | 10 | Eu | |
| Melothria pendula | creeping cucumber | Cucurbitaceae | 83 | 6 | 8 | N | Guadeloupe cucumber |
| Menispermum canadense | Canada moonseed | Menispermaceae | 5.2 | 7 | N | ||
|
| Mentha longifolia | field mint | Lamiaceae | 0 | 7 | 10 | Eu,As | |
| Mentha piperita | peppermint | Lamiaceae | 0 | 7 | 9 | Eu | |
|
| Mentha spicata | spearmint | Lamiaceae | 0 | 7 | 10 | Eu | |
| Mertensia virginica | Virginia bluebells | Boraginaceae | 213 | 3.4 | 5.1 | N | |
|
| Microstegium vimineum | bamboo grass | Poaceae | Tr,As | ||||
|
| Mimulus alatus | monkey flower | Scrophulariaceae | 243 | 7 | 8 | N | |
| Minuartia patula | glade sandwort | Caryophyllaceae | 54 | 4.1 | 6 | N | Arenaria patula,pitcher's stitchwort |
| Mitchella repens | partridgeberry | Rubiaceae | 5.3 | 6.4 | * | ||
| Mitella diphylla | two leaf` miterwort | Saxifragaceae | 111 | 4.1 | 5.3 | N | * bishop's cap |
|
| Mollugo verticillata | carpet weed | Molluginaceae | 0 | 6 | 9 | Tr | |
| Monarda bradburiana | eastern beebalm | Lamiaceae | 222 | 5.2 | 6 | N | |
|
| Monarda clinopodia | white bergamot | Lamiaceae | 222 | 5.4 | 7.4 | N | * |
| Monarda didyma | scarlet beebalm | Lamiaceae | |||||
| Monarda fistulosa | wild bergamot | Lamiaceae | 223 | 6.3 | 9.2 | N | |
|
| Monarda russeliana | redpurple beebalm | Lamiaceae | 5.2 | 6.2 | N | * | |
|
| Monotropa hypopithys | pine sap | Monotropaceae | 100 | 7.1 | 9.4 | N | |
| Monotropa uniflora | Indian pipe | Monotropaceae | 7.2 | 8.3 | |||
|
| Mosla dianthera | miniature beefsteakplant | Lamiaceae | Orthodon dianthera | ||||
|
| Muhlenbergia sobolifera | branched muhly | Poaceae | 0 | 9 | 10 | N | rock muhly |
| Muscari botryoides | common grape hyacinth | Liliaceae | 365 | 3 | 4 | Eu | |
| Myosotis macrosperma | forget me not | Boraginaceae | 0 | 4 | 5 | N | |
| Narcissus pseudonarcissus | daffodil | Liliaceae | 2.3 | 5 | C,G | ||
|
| Nasturtium officinale | watercress | Brassicaceae | 96 | 4 | 10 | Eu,As | Rorippa nasturtium-aquaticum |
| Nelumbo lutea | American lotus | Nelumbonaceae | |||||
| Nemophila aphylla | baby blue eyes | Hydrophyllaceae | 207 | 3.3 | 5 | N | Nemophila triloba,smallflower baby blue eyes |
| Nothoscordum bivalve | false garlic | Liliaceae | 365 | 4.1 | 5.2 | N | |
| Nymphaea odorata | fragrant water lily | Nymphaeaceae | 30 | 7 | 8 | N | American white waterlily |
| Obolaria virginica | Virginia pennywort | Gentianaceae | 187 | 3.3 | 6.2 | ||
| Oenothera biennis | common evening primrose | Onagraceae | 152 | 6 | 10 | N | |
| Oenothera macrocarp ssp. macrocarpa | Missouri evening primrose | Onagraceae | 153 | 5 | 7 | N | Oenothera missouriensis,bigfruit evening primrose |
| Oenothera speciosa | pink ladies | Onagraceae | 154 | 4.3 | 6 | Nam | |
|
| Oenothera triloba | three lobed evening primrose | Onagraceae | 154 | 5 | 6 | N | stemless evening primrose |
| Onosmodium molle | false gromwell | Boraginaceae | 213 | 6 | 7 | N | soft hair marble seed |
| Opuntia humifusa | devil's tongue | Cactaceae | 51 | 5.3 | 7.2 | N | prickly-pear,Opuntia compressa |
| Ornithogalum umbellatum | star of Bethlehem | Liliaceae | 366 | 4.3 | 4.4 | Eu,G | * sleepydick |
|
| Osmorhiza claytonii | Clayton's sweet cicely | Apiaceae | 179 | 4 | 6 | N | Clayton's sweetroot |
| Osmorhiza longistylis | longstyle sweet cicely | Apiaceae | N | longstyle sweetroot | |||
|
| Oxalis corniculata | creeping woodsorrel | Oxalidaceae | 0 | 4 | 11 | N | creeping lady's sorrel |
| Oxalis grandis | giant woodsorrel | Oxalidaceae | 168 | 4.3 | 6.1 | N | great yellow woodsorrel |
| Oxalis priceae | Price's woodsorrel | Oxalidaceae | 169 | 4 | 5 | N | Oxalis macrantha,tufted yellow woodsorrel |
| Oxalis stricta | yellow woodsorrel | Oxalidaceae | 169 | 4.3 | 6.4 | N | common yellow oxalis,Oxalis cymosa, Oxalis dillenii |
| Oxalis violacea | violet woodsorrel | Oxalidaceae | 170 | 4.1 | 6 | N | |
|
| Oxypolis rigidior | stiff cowbane | Apiaceae | 180 | 8 | 10 | N | water dropwort |
| Pachysandra procumbens | pachysandra | Buxaceae | 156 | 3.4 | 4 | N | |
| Packera anonyma | southern ragwort | Asteraceae | 322 | 5.1 | 6 | N | Small's ragwort, Senecio anonymus, Senecio smallii |
| Packera aurea | golden ragwort | Asteraceae | 323 | 5.1 | 8 | N | Senecio aureus |
| Packera glabella | butterweed | Asteraceae | 323 | 4.2 | 7 | N | Enecio glabellus,golden ragwort |
| Packera obovata | round leaf ragwort | Asteraceae | 323 | 4.1 | 6 | N | Senecio obovatus |
|
| Panax quinquefolius | American ginseng | Araliaceae | 172 | 5 | 7 | N | |
|
| Panicum boscii | Bosc's panic grass | Poaceae | 0 | 6 | 8 | N | |
|
| Panicum capillare | witchgrass | Poaceae | 0 | 8 | 10 | N | |
|
| Panicum dichotomum | spreading witchgrass | Poaceae | 0 | 5 | 8 | N | |
|
| Panicum flexile | wiry panic grass | Poaceae | 0 | 7 | 10 | N | wiry witchgrass |
|
| Panicum malacophylum | soft leaved panicum | Poaceae | N | ||||
|
| Panicum virgatum | switchgrass | Poaceae | |||||
| Papaver rhoeas | corn poppy | Papaveraceae | 46 | 4.4 | 5 | Eu | |
|
| Parietaria pensylvanica | pellitory | Urticaceae | 0 | 6 | 8 | N | |
|
| Paronychia canadensis | forked chickweed | Caryophyllaceae | 0 | 6 | 9 | N | |
| Parthenium integrifolium | wild quinine | Asteraceae | 316 | 6.3 | 9.2 | N | |
|
| Paspalum setaceum | thin paspalum | Poaceae | 0 | 7 | 9 | N | Paspalum ciliatifolium |
| Passiflora incarnata | purple passion flower | Passifloraceae | 82 | 6.3 | 9 | N | maypops |
| Passiflora lutea | yellow passion flower | Passifloraceae | 82 | 6 | 9 | N | |
| Pedicularis canadensis | wood betony | Scrophulariaceae | 244 | 4.2 | 5.3 | N | |
| Pediomelum subacaule | Nashville breadroot | Fabaceae | 138 | 4.1 | 5 | N | Psoralea subacaulis, whiterim scurfpea,Indian breadroot |
| Penstemon calycosus | small beardtongue | Scrophulariaceae | 245 | 5 | 6 | N | |
|
| Penstemon canescens | eastern gray beardtongue | Scrophulariaceae | 245 | 5 | 6 | N | |
|
| Penstemon digitalis | tall white beardtongue | Scrophulariaceae | 245 | 5.2 | 7.1 | N | * |
|
| Penstemon hirsutus | hairy beardtongue | Scrophulariaceae | 246 | 5 | 7 | N | |
|
| Penstemon laevigatus | eastern smooth beardtongue | Scrophulariaceae | 0 | 5 | 7 | N | |
| Penstemon smallii | Small's beardtongue | Scrophulariaceae | |||||
| Penstemon tenuiflorus | eastern white flower beardtongue | Scrophulariaceae | 246 | 5.1 | 6.3 | N | slender flowered beardtongue |
|
| Perideridia americana | thicket parsley | Apiaceae | N | eastern yampah | |||
| Perilla frutescens | beefsteak plant | Lamiaceae | 0 | 7 | 10 | As | |
| Phacelia bipinnatifida | purple phacelia | Hydrophyllaceae | 208 | 4.2 | 5.2 | N | |
| Phacelia dubia var. interior | glade phacelia | Hydrophyllaceae | 208 | 4 | 6 | N | interior phacelia |
| Phacelia purshii | Miami mist | Hydrophyllaceae | 209 | 4.3 | 5.2 | N | |
| Philadelphus inodorus | scentless mock orange | Hydrangeaceae | 0 | 5 | 6 | N | |
| Phleum pratense | timothy | Poaceae | 6 | 6 | EU | ||
| Phlox amoena | hairy phlox | Polemoniaceae | 203 | 4.3 | 6 | N | |
|
| Phlox amplifolia | largeleaf phlox | Polemoniaceae | |||||
| Phlox bifida ssp. stellaria | glade phlox | Polemoniaceae | 203 | 3.4 | 5 | N | Phlox bifida |
| Phlox divaricata | blue phlox | Polemoniaceae | 204 | 4.2 | 5.3 | N | |
| Phlox paniculata | garden phlox | Polemoniaceae | 204 | 7.3 | 9.3 | N | |
| Phlox pilosa | downy phlox | Polemoniaceae | 205 | 4.1 | 6 | N | |
| Phragmites australis | common reed | Poaceae | |||||
| Phryma leptostachya | American lopseed | Verbenaceae | 216 | 7.2 | 8.4 | N | |
| Phyla lanceolata | lance leaf fogfruit | Verbenaceae | 214 | 5 | 10 | N | |
|
| Phyla nodiflora | spatulate fogfruit | Verbenaceae | 0 | 5 | 10 | N | |
|
| Physalis heterophylla | clammy ground cherry | Solanaceae | 197 | 6 | 9 | N | |
|
| Physalis pubescens | downy ground-cherry | Solanaceae | 0 | 5 | 9 | N | |
|
| Physalis virginiana | Virginia ground cherry | Solanaceae | 197 | 5.4 | 10.1 | N | * |
| Phytolacca americana | pokeweed | Phytolaccaceae | 50 | 6.1 | 9 | N | |
| Pilea pumila | clearweed | Urticaceae | 0 | 7 | 10 | N | |
| Pityopsis graminifolia | narrowleaf silkgrass | Asteraceae | |||||
|
| Plantago aristata | bracted plantain | Plantaginaceae | 234 | 5 | 7 | Nam | large bracted plantain |
| Plantago lanceolata | English plantain | Plantaginaceae | 234 | 4.3 | 10 | Eu,As | |
|
| Plantago major | common plantain | Plantaginaceae | 0 | 5 | 9 | Eu,As | |
| Plantago rugelii | blackseed plantain | Plantaginaceae | 234 | 6.2 | 10 | N | |
| Plantago virginica | dwarf plantain | Plantaginaceae | 234 | 4 | 6 | N | Virginia plantain |
|
| Pluchea camphorata | camphorweed | Asteraceae | 316 | 8 | 9 | N | marsh fleabane |
| Poa annua | annual bluegrass | Poaceae | 4 | 5 | EU | ||
| Poa pratensis | Kentucky bluegrass | Poaceae | 0 | 5 | 7 | Eu | |
| Podophyllum peltatum | may apple | Berberidaceae | 46 | 4.3 | 5.4 | N | |
|
| Polanisia dodecandra | clammy weed | Cucurbitaceae | 0 | 7 | 9 | N | |
| Polemonium reptans | Jacob's ladder | Polemoniaceae | 206 | 3.1 | 5.2 | N | * |
| Polygala sanguinea | field milkwort | Polygalaceae | purple milkwort | ||||
|
| Polygala senega | Seneca snakeroot | Polygalaceae | 164 | 5 | 6 | ||
| Polygonatum biflorum | smooth Solomon's seal | Liliaceae | 366 | 4.3 | 5.4 | N | * |
|
| Polygonum buxiforme | shore knotweed | Polygonaceae | N | ||||
|
| Polygonum caespitosum | long bristled smartweed | Polygonaceae | As | Polygonum cespitosum,oriental ladysthumb | |||
|
| Polygonum convolvulus | black bindweed | Polygonaceae | 0 | 7 | 9 | Eu | |
|
| Polygonum erectum | erect knotweed | Polygonaceae | 0 | 7 | 9 | N | |
|
| Polygonum hydropiperoides | water pepper | Polygonaceae | 0 | 6 | 9 | N | |
|
| Polygonum lapathifolium | curlytop knotweed | Polygonaceae | 0 | 6 | 11 | N | |
|
| Polygonum pensylvanicum | Pennsylvania smartweed | Polygonaceae | 60 | 5 | 10 | N | |
|
| Polygonum persicaria | lady's thumb | Polygonaceae | 0 | 6 | 10 | Eu | |
|
| Polygonum scandens | false buckwheat | Polygonaceae | 61 | 7 | 10 | N | |
|
| Polygonum setaceum | bog smartweed | Polygonaceae | 0 | 7 | 9 | N | Polygonum hydropiperoides var. setaceum |
| Polygonum virginianum | Virginia knotweed | Polygonaceae | 61 | 7 | 10 | N | |
| Polymnia canadensis | pale flowered leafcup | Asteraceae | 317 | 5.3 | 10 | N | white bear's foot,white flower leafcup |
| Pontederia cordata | blue pickerel weed | Pontederiaceae | 352 | 6 | 10 | N | |
| Porteranthus stipulatus | Indian physic | Rosaceae | 118 | 5 | 6 | N | American ipecac |
|
| Portulaca oleracea | purslane | Portulacaceae | 56 | 6 | 11 | As | |
|
| Potentilla canadensis | dwarf cinquefoil | Rosaceae | 119 | 3 | 5 | N | dwarf cinquefoil |
| Potentilla recta | sulfur cinquefoil | Rosaceae | 119 | 5.1 | 7 | Eu | rough fruited cinquefoil, sulphur cinquefoil |
| Potentilla simplex | common cinquefoil | Rosaceae | 120 | 4.3 | 6.1 | N | |
|
| Prenanthes altissima | rattlesnake root | Asteraceae | 318 | 8 | 9 | N | tall white lettuce |
| Prunella vulgaris | common self heal | Lamiaceae | 224 | 5.3 | 10.4 | Eu | heal all |
| Pseudognaphalium obtusifolium ssp. obtusifolium | sweet life everlasting | Asteraceae | 298 | 8 | 10 | N | sweet everlasting,rabbit tobacco,Gnaphalium obtusifolium |
| Pueraria montana | kudzu | Fabaceae | 138 | 7 | 10 | As | Pueraria lobata |
|
| Pycnanthemum flexuosum | Appalachian mountainmint | Lamiaceae | 7.1 | 8.3 | |||
|
| Pycnanthemum incanum | hoary mountainmint | Lamiaceae | 7.3 | 9.2 | |||
| Pycnanthemum pycnanthemoides | southern mountain mint | Lamiaceae | 225 | 7.3 | 9 | N | Pycnanthemum incanum ssp. pycnanthemoides |
|
| Pycnanthemum tenuifolium | narrowleaf mountain mint | Lamiaceae | 225 | 6 | 7 | N | |
| Pyrrhopappus carolinian |