| Thumbnail | Scientific Name | Common Name | Family Name | Page Number in Guide | Start Bloom | Stop Bloom | Origin | Synonyms |
 | Actaea pachypoda | white baneberry | Ranunculaceae | 32 | 4.2 | 5.3 | N | doll's eyes, Actaea alba |
 | 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 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 |
 | Allium cernuum | nodding wild onion | Liliaceae | 353 | 7 | 9 | N | nodding onion |
 | Allium vineale | wild garlic | Liliaceae | 354 | 6.1 | 6 | Eu | field garlic,crow garlic,scallions |
 | 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 | 6.2 | 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 |
 | Arabis laevigata | smooth rock cress | Brassicaceae | 84 | 4.1 | 5.1 | N | sickle-pod mustard |
 | Arisaema triphyllum | jack in the pulpit | Araceae | 338 | 4.2 | 5 | N | |
| Aristida purpurascens | arrowfeather threeawn | Poaceae | | | | | |
| Aristolochia serpentaria | Virginia snakeroot | Aristolochiaceae | 27 | 5 | 6 | N | serpent's birthwort |
| Arnoglossum muehlenbergii | great Indian plaintain | Asteraceae | | | | | Cacalia muhlenbergii |
 | Asarum canadense | wild ginger | Aristolochiaceae | 28 | 4.2 | 6.1 | N | |
 | Asclepias quadrifolia | fourleaf milkweed | Asclepiadaceae | 192 | 4.4 | 7.2 | N | |
 | Asclepias verticillata | whorled milkweed | Asclepiadaceae | | 7.2 | 8.4 | | |
 | Blephilia ciliata | downy woodmint | Lamiaceae | 217 | 5.2 | 7.3 | N | downy pagoda plant |
 | Boehmeria cylindrica | false nettle | Urticaceae | 50 | 6 | 8 | N | |
| Brachyelytrum erectum | bearded shorthusk | Poaceae | | | | | |
| Brassica nigra | black mustard | Brassicaceae | 85 | 5 | 8 | Eu,As | |
| Bromus pubescens | hairy woodland brome | Poaceae | 0 | 6 | 7 | N | Bromus purgans,Canada bromegrass |
 | 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 |
 | Cardamine angustata | slender toothwort | Brassicaceae | 88 | 4.1 | 5 | N | Dentaria heterophylla |
 | Cardamine concatenata | cutleaf toothwort | Brassicaceae | 88 | 3.2 | 5 | N | Dentaria laciniata |
 | Cardamine douglassii | limestone bittercress | Brassicaceae | 87 | 3.2 | 5.3 | N | purple cress |
| 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 complanata | hirsute 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 picta | Boott's sedge | Cyperaceae | 0 | 3.2 | 4 | N | |
| Carex virescens | ribbed sedge | Cyperaceae | | | | | |
| Carex willdenowii | Willdenow's sedge | Cyperaceae | | | | | |
| Cerastium fontanum | big chickweed | Caryophyllaceae | | | | | |
 | Chamaelirium luteum | fairywand | Liliaceae | 355 | 5 | 7 | N | devil's bit |
 | Chasmanthium latifolium | river oats | Poaceae | 347 | 6 | 10 | N | Uniola latifolia,Indian wood oats,spangle grass |
 | Chelone glabra | white turtlehead | Scrophulariaceae | | | | | |
 | Chimaphila maculata | pipsissewa; spotted wintergreen | Pyrolaceae | 0 | 6.2 | 7.2 | N | * |
| 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 | |
 | Claytonia virginica | spring beauty | Portulacaceae | 53 | 3.3 | 5.2 | N | |
 | Clematis viorna | vasevine | Ranunculaceae | 35 | 5.4 | 7 | N | leather flower |
 | Cocculus carolinus | Carolina snailseed | Menispermaceae | 0 | 6 | 8 | N | |
 | Collinsonia canadensis | citronella; horse balm | Lamiaceae | 218 | 7 | 9 | N | |
| Commelina virginica | Virginia dayflower | Commelinaceae | | | | | |
 | Conoclinium coelestinum | blue mistflower | Asteraceae | 286 | 7 | 10 | N | Eupatorium coelestinum,mistflower |
 | Conopholis americanus | squawroot | Orobanchaceae | 250 | 4.2 | 6.1 | N | * |
 | Coreopsis major | whorled leaf coreopsis | Asteraceae | 287 | 5.4 | 7.4 | N | greater tickseed,forest tickseed |
| Coreopsis tripteris | tall tickseed | Asteraceae | 288 | 7 | 9 | N | tall coreopsis |
 | Croton monanthogynus | lemon spurge | Euphorbiaceae | 157 | 6 | 10 | N | prairie tea |
 | 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 | |
| Danthonia spicata | poverty oatgrass | Poaceae | | | | | |
 | Dasistoma macrophylla | mullein foxglove | Scrophulariaceae | | | | N | |
 | Delphinium tricorne | dwarf larkspur | Ranunculaceae | 37 | 3.4 | 5.2 | N | |
| 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 pauciflorum | fewflower ticktrefoil | Fabaceae | | | | | |
| Desmodium rotundifolium | prostrate ticktrefoil | Fabaceae | | | | | |
| Diarrhena americana | American beakgrain | Poaceae | | | | | |
| Dichanthelium boscii | Bosc's panicgrass | Poaceae | | | | | |
| Dichanthelium latifolium | broadleaf rosette grass | Poaceae | | | | | |
 | Diodia virginiana | buttonweed | Rubiaceae | 261 | 7 | 8 | N | |
 | Dioscorea villosa | wild yam | Dioscoreaceae | 384 | 5.1 | 8 | N | Dioscorea quaternata,colic root |
 | Dodecatheon meadia | shooting star | Primulaceae | 104 | 4.2 | 6.1 | N | pride of Ohio |
 | Echinacea purpurea | eastern purple coneflower | Asteraceae | 290 | 6.1 | 10 | N | |
 | 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 | | | | | |
 | Epifagus virginiana | beech drops | Orobanchaceae | 250 | 7 | 11 | 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 americanum | trout lily | Liliaceae | 359 | 3.4 | 4.4 | N | dogtooth violet |
 | Eupatorium altissimum | tall thoroughwort | Asteraceae | 294 | 8 | 10 | N | |
 | Eupatorium fistulosum | hollow joe-pye-weed | Asteraceae | 295 | 7 | 9 | N | joe pye weed |
| 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 maculata | prostrate spurge | Euphorbiaceae | 0 | 5 | 10 | N | |
| Euphorbia mercurialina | mercury spurge | Euphorbiaceae | | | | | |
| Fleischmannia incarnata | pink thoroughwort | Asteraceae | 286 | 8 | 10 | N | Eupatorium incarnatum |
 | Frasera caroliniensis | American columbo | Gentianaceae | 185 | 4.4 | 7.1 | N | * Swertia caroliniensis |
 | Galearis spectabilis | showy orchis | Orchidaceae | 394 | 4.3 | 5 | N | |
 | Galium aparine | cleavers | Rubiaceae | 261 | 4.2 | 6.3 | N | |
 | Galium circaezans | wild licorice | Rubiaceae | 261 | 5.4 | 7.4 | N | |
| Gentiana saponaria | harvestbells | Gentianaceae | 185 | 9 | 10 | N | soapwort gentian |
 | Geranium maculatum | spotted geranium | Geraniaceae | 170 | 4.2 | 5.3 | N | wild geranium |
 | Geum canadense | white avens | Rosaceae | 117 | 6.4 | 8.4 | N | |
 | Geum vernum | spring avens | Rosaceae | 117 | 4.3 | 5 | N | |
| Geum virginianum | cream avens | Rosaceae | | | | | |
| Glyceria striata | fowl mannagrass | Poaceae | | | | | |
| 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 |
| Heliopsis helianthoides | smooth oxeye | Asteraceae | | 7.3 | 10.1 | | |
 | Hepatica nobilis var. acuta | sharp lobed hepatica | Ranunculaceae | 39 | 3.2 | 4.3 | N | * Hepatica acutiloba,sharplobe hepatica |
 | Heuchera americana | common alumroot | Saxifragaceae | 109 | 4.4 | 7.1 | NAm | American alumroot |
 | Heuchera villosa | hairy alumroot | Saxifragaceae | 109 | 5.4 | 7.2 | 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 |
 | Hybanthus concolor | green violet | Violaceae | 72 | 4 | 6 | N | |
 | Hypericum punctatum | spotted St. John's wort | Clusiaceae | 66 | 6 | 8 | 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 |
 | Iris cristata | dwarf crested iris | Iridaceae | 386 | 4.3 | 5.3 | N | |
 | Jeffersonia diphylla | twinleaf | Berberidaceae | 45 | 3.1 | 4.2 | N | * |
| Juncus effusus | common rush | Juncaceae | | | | | |
 | Krigia biflora | two flower dwarf dandelion | Asteraceae | 310 | 4.3 | 7.1 | N | two flowered cynthia,orange dwarf dandelion |
| Krigia virginica | Virginia dwarf dandelion | Asteraceae | 310 | 4 | 6 | N | |
 | Laportea canadensis | wood nettle | Urticaceae | 50 | 7.3 | 8.4 | N | |
| Leersia virginica | whitegrass | Poaceae | | | | | |
 | Lespedeza cuneata | Chinese lespedeza | Fabaceae | 0 | 7 | 9 | As | |
 | 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 | | |
 | Lithospermum canescens | hoary puccoon | Boraginaceae | 212 | 4.1 | 5 | N | |
 | Lithospermum tuberosum | southern stoneseed | Boraginaceae | 212 | 5 | 6 | N | tuberous stoneseed |
 | 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 | |
 | Lonicera sempervirens | coral honeysuckle | Caprifoliaceae | 267 | 4.3 | 7 | N | trumpet honeysuckle |
| Ludwigia alternifolia | seedbox | Onagraceae | 150 | 5 | 10 | N | |
 | Luzula bulbosa | bulbous woodrush | Juncaceae | | 5.2 | | N | |
| Lysimachia ciliata | fringed loosestrife | Primulaceae | | 6.4 | 7.3 | | |
 | Maianthemum racemosum ssp. racemosum | false Solomon's seal | Liliaceae | 367 | 4.2 | 5.4 | N | * Smilacina racemosa,feathery false lily of the valley |
 | 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 |
| Mentha spicata | spearmint | Lamiaceae | 0 | 7 | 10 | Eu | |
| Microstegium vimineum | bamboo grass | Poaceae | | | | Tr,As | |
 | Monarda bradburiana | eastern beebalm | Lamiaceae | 222 | 5.2 | 6 | N | |
| Monarda clinopodia | white bergamot | Lamiaceae | 222 | 5.4 | 7.4 | N | * |
 | Monarda fistulosa | wild bergamot | Lamiaceae | 223 | 6.3 | 9.2 | N | |
| Monarda russeliana | redpurple beebalm | Lamiaceae | | 5.2 | 6.2 | N | * |
 | Muscari botryoides | common grape hyacinth | Liliaceae | 365 | 3 | 4 | Eu | |
| Nasturtium officinale | watercress | Brassicaceae | 96 | 4 | 10 | Eu,As | Rorippa nasturtium-aquaticum |
 | Nothoscordum bivalve | false garlic | Liliaceae | 365 | 4.1 | 5.2 | N | |
 | Obolaria virginica | Virginia pennywort | Gentianaceae | 187 | 3.3 | 6.2 | | |
 | 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 |
 | Oxalis grandis | giant woodsorrel | Oxalidaceae | 168 | 4.3 | 6.1 | N | great yellow woodsorrel |
 | 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 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 |
| Panicum virgatum | switchgrass | Poaceae | | | | | |
 | Parthenium integrifolium | wild quinine | Asteraceae | 316 | 6.3 | 9.2 | N | |
 | Penstemon calycosus | small beardtongue | Scrophulariaceae | 245 | 5 | 6 | N | |
| Penstemon canescens | eastern gray beardtongue | Scrophulariaceae | 245 | 5 | 6 | N | |
 | Penstemon tenuiflorus | eastern white flower beardtongue | Scrophulariaceae | 246 | 5.1 | 6.3 | N | slender flowered beardtongue |
 | Phacelia bipinnatifida | purple phacelia | Hydrophyllaceae | 208 | 4.2 | 5.2 | N | |
 | Phacelia purshii | Miami mist | Hydrophyllaceae | 209 | 4.3 | 5.2 | N | |
 | Phlox amoena | hairy phlox | Polemoniaceae | 203 | 4.3 | 6 | N | |
| Phlox amplifolia | largeleaf phlox | Polemoniaceae | | | | | |
 | Phlox divaricata | blue phlox | Polemoniaceae | 204 | 4.2 | 5.3 | N | |
| Physalis heterophylla | clammy ground cherry | Solanaceae | 197 | 6 | 9 | N | |
 | Pilea pumila | clearweed | Urticaceae | 0 | 7 | 10 | N | |
 | Podophyllum peltatum | may apple | Berberidaceae | 46 | 4.3 | 5.4 | N | |
 | Polemonium reptans | Jacob's ladder | Polemoniaceae | 206 | 3.1 | 5.2 | N | * |
 | Polygala sanguinea | field milkwort | Polygalaceae | | | | | purple milkwort |
 | Polygonatum biflorum | smooth Solomon's seal | Liliaceae | 366 | 4.3 | 5.4 | N | * |
| Polygonum caespitosum | long bristled smartweed | Polygonaceae | | | | As | Polygonum cespitosum,oriental ladysthumb |
| Polygonum pensylvanicum | Pennsylvania smartweed | Polygonaceae | 60 | 5 | 10 | N | |
 | Polymnia canadensis | pale flowered leafcup | Asteraceae | 317 | 5.3 | 10 | N | white bear's foot,white flower leafcup |
 | Potentilla simplex | common cinquefoil | Rosaceae | 120 | 4.3 | 6.1 | N | |
| Prenanthes altissima | rattlesnake root | Asteraceae | 318 | 8 | 9 | N | tall white lettuce |
| Pycnanthemum flexuosum | Appalachian mountainmint | Lamiaceae | | 7.1 | 8.3 | | |
| Pycnanthemum incanum | hoary mountainmint | Lamiaceae | | 7.3 | 9.2 | | |
| Ranunculus hispidus | bristly buttercup | Ranunculaceae | 41 | 3.4 | 5.2 | N | * |
| Ranunculus recurvatus | recurved buttercup | Ranunculaceae | 42 | 4.3 | 5.2 | N | * blisterwort |
 | Rudbeckia hirta | black eyed Susan | Asteraceae | 320 | 6.2 | 9.2 | N | |
| Ruellia carolinensis | Carolina wild petunia | Acanthaceae | 252 | 6.4 | 9.2 | N | hairy ruellia |
| Saccharum alopecuroidum | silver plumegrass | Poaceae | | | | | |
| Saccharum giganteum | sugarcane plumegrass | Poaceae | | | | | |
 | Salvia lyrata | lyre leaf sage | Lamiaceae | 226 | 4.3 | 6.1 | N | |
 | Sanguinaria canadensis | bloodroot | Papaveraceae | 47 | 3.4 | 4.2 | N | |
 | Sanicula canadensis | Canada snakeroot | Apiaceae | | 5.1 | 8 | N | |
| Sanicula odorata | clustered black snakeroot | Apiaceae | 0 | 5.2 | 6.4 | N | * Sanicula gregaria |
| Sanicula smallii | black snakeroot | Apiaceae | 0 | 5 | 6 | N | |
 | Saxifraga virginiensis | early saxifrage | Saxifragaceae | 114 | 3.2 | 5.1 | N | |
 | Schizachyrium scoparium | little bluestem | Poaceae | | | | | |
| Scirpus atrovirens | black bulrush | Cyperaceae | 0 | 6 | 8 | N | |
 | Scutellaria elliptica | hairy skullcap | Lamiaceae | 227 | 6.2 | 7.3 | N | * |
 | Sedum ternatum | white stonecrop | Crassulaceae | 108 | 4.2 | 5.3 | N | rock cress sedum,woodland stonecrop, mountain stonecrop |
 | Senna marilandica | southern wild senna | Fabacaeae | 139 | 7 | 8 | N | Cassia marilandica |
| Setaria viridis | green bristlegrass | Poaceae | | | | | |
| Silene caroliniana | sticky catchfly | Caryophyllaceae | 56 | 4 | 5 | N | wild pink |
 | Silene stellata | starry campion | Caryophyllaceae | 57 | 7.3 | 9.1 | N | |
 | Silene virginica | fire pink | Caryophyllaceae | 58 | 4.2 | 6.2 | N | |
| Silphium asteriscus | starry rosinweed | Asteraceae | | | | | |
 | Sisyrinchium albidum | pale blue eyed grass | Iridaceae | 388 | 4.3 | 5 | N | white blue eyed grass |
 | Sisyrinchium angustifolium | narrow leaf blue eyed grass | Iridaceae | 389 | 4.4 | 6.1 | N | stout blue eyed grass |
 | Smallanthus uvedalius | yellow leafcup | Asteraceae | 317 | 7.3 | 9 | N | Polymnia uvedalia, hairy leafcup, large flowered leafcup, bear's foot |
| Solidago arguta | Atlantic goldenrod | Asteraceae | | | | | |
| Solidago caesia | wreath goldenrod | Asteraceae | 327 | 8 | 10 | N | blue stem,axillary goldenrod |
 | Solidago canadensis | Canada goldenrod | Asteraceae | 329 | 7 | 9 | N | common goldenrod |
| Solidago curtisii | mountain decumbent goldenrod | Asteraceae | | | | | |
| Solidago erecta | erect goldenrod | Asteraceae | 327 | 8 | 10 | N | |
| Solidago flexicaulis | zigzag goldenrod | Asteraceae | | | | | |
| Solidago nemoralis | gray goldenrod | Asteraceae | | | | | |
| Solidago patula | roundleaf goldenrod | Asteraceae | 0 | 8 | 10 | N | rough goldenrod |
| Solidago sphacelata | autumn goldenrod | Asteraceae | 329 | 8 | 9 | N | false goldenrod |
| Solidago spithamaea | Blue Ridge goldenrod | Asteraceae | | | | | |
| Solidago ulmifolia | elm leaved goldenrod | Asteraceae | 330 | 8 | 10 | N | |
| Sorghastrum nutans | Indiangrass | Poaceae | | | | | |
 | Sorghum halepense | Johnson grass | Poaceae | 349 | 5.4 | 10 | EU | |
 | Spigelia marilandica | Indian pink | Loganiaceae | 184 | 5.3 | 6 | N | woodland pinkroot |
 | Stellaria pubera | giant chickweed | Caryophyllaceae | 59 | 4.1 | 5.3 | N | star chickweed |
 | Stenanthium gramineum | eastern featherbells | Liliaceae | 368 | 7 | 9 | N | |
| Synandra hispidula | Guyandotte beauty | Lamiaceae | | 4.2 | 7.1 | | * |
| Thalictrum dioicum | early meadow rue | Ranunculaceae | 42 | 4.3 | 5.1 | N | * |
 | Thalictrum thalictroides | rue anemone | Ranunculaceae | 43 | 3.2 | 5.4 | N | * Anemonella thalictroides |
 | Thaspium barbinode | hairyjoint meadowparsnip | Apiaceae | 182 | 4.3 | 6 | N | |
| Thaspium pinnatifidum | cutleaf meadowparsnip | Apiaceae | | | | | |
 | Thaspium trifoliatum | purple meadowparsnip | Apiaceae | 182 | 4.4 | 5 | N | |
| Thermopsis villosa | Aaron's rod | Fabaceae | 141 | 5 | 6 | N | Blue Ridge buckbean |
 | Tipularia discolor | cranefly orchid | Orchidaceae | 408 | 7 | 8 | N | |
 | Tradescantia subaspera | wide leaved spiderwort | Commelinaceae | 343 | 5.3 | 9.2 | N | zigzag spiderwort,harsh spiderwort |
 | Tradescantia virginiana | Virginia spiderwort | Commelinaceae | 4 | 5.2 | 7 | N | |
 | Tragia cordata | heartleaf noseburn | Euphorbiaceae | 0 | 6 | 8 | N | heart leaved tragia |
| Trautvetteria caroliniensis | Carolina bugbane | Ranunculaceae | 43 | 6 | 7 | N | false bugbane |
| Tridens flavus | purpletop | Poaceae | 0 | 8 | 10 | N | Triodia flava,tall redtop |
 | Trifolium pratense | red clover | Fabaceae | 143 | 4.4 | 8 | Eu | |
 | Trifolium repens | white clover | Fabaceae | 143 | 4.1 | 7.4 | Eu,As | |
 | Trillium cuneatum | toadshade trillium | Liliaceae | 372 | 3.3 | 5 | N | |
 | Trillium flexipes | white trillium | Liliaceae | 377 | 4.1 | 5.3 | N | * |
 | Trillium sessile | sessile trillium | Liliaceae | 375 | 3.3 | 4.4 | N | |
 | Uvularia grandiflora | large flowered bellwort | Liliaceae | 369 | 4.3 | 5.4 | N | * |
 | Uvularia perfoliata | perfoliate bellwort | Liliaceae | | 4.3 | 5.4 | | * |
 | Valeriana pauciflora | largeflower valerian | Valerianaceae | | 5.1 | 6.2 | | * |
 | Valerianella radiata | beaked corn salad | Valerianaceae | 270 | 4.2 | 5 | N | |
 | Verbesina alternifolia | yellow wingstem | Asteraceae | 332 | 8 | 10 | N | Actinomeris alternifolia |
 | Verbesina virginica | white crownbeard | Asteraceae | 333 | 7.3 | 10 | N | frostweed |
 | Vernonia gigantea | tall ironweed | Asteraceae | 334 | 8 | 10 | N | giant ironweed |
 | Vicia caroliniana | wood vetch | Fabaceae | 144 | 4.2 | 5.2 | N | white vetch, Carolina vetch |
 | Viola palmata | three lobed violet | Violaceae | 76 | 4.4 | 5.2 | N | * Viola triloba |
 | Viola sororia | common blue violet | Violaceae | 80 | 3.3 | 6 | N | |
| Vitis aestivalis | summer grape | Vitaceae | 0 | 5 | 6 | N | |
| Zizia aptera | meadow zizia | Apiaceae | | 4.4 | 6.3 | N | * |
 | Zizia aurea | golden Alexanders | Apiaceae | 182 | 4 | 6 | N | golden zizia |
