| SAURURACEAE |
| Lizard tail |
Saururus cernuus |
1948,1954 |
| ARISTOLOCHIACEAE |
| Wild-ginger |
Asarum canadense |
1937 |
| NYMPHAEACEAE |
| Spatterdock |
Nuphar lutea |
1937 |
| European waterlily |
Nymphaea alba* |
| White waterlily |
Nymphaea odorata |
1946,1965 |
| CABOMBACEAE |
| Water-shield |
Brasenia schreberi |
1946 |
| RANUNCULACEAE |
| Wood anemone |
Anemone quinquefolia |
1936 |
| Virgins-bower |
Clematis virginiana |
1937 |
| Small-flowered buttercup |
Ranunculus abortivus |
1937,1968 |
| Common buttercup |
Ranunculus acris* |
1938 |
| Tall spearwort |
Ranunculus ambigens |
1937 |
| Bulbous buttercup |
Ranunculus bulbosus* |
1942 |
| Hairy buttercup |
Ranunculus hispidus |
1935,1945,1971 |
| Low spearwort |
Ranunculus pusillus |
1936,1945 |
| Hooked buttercup |
Ranunculus recurvatus |
1937,1949 |
| Creeping buttercup |
Ranunculus repens* |
1937,1938 |
| Tall meadow-rue |
Thalictrum pubescens |
1937,1938,1945 |
| Rue-anemone |
Thalictrum thalictroides |
1937 |
| BERBERIDACEAE |
| May-apple |
Podophyllum peltatum |
1944 |
| PAPAVERACEAE |
| Bloodroot |
Sanguinaria canadensis |
1943 |
| Celandine |
Chelidonium majus* |
1938 |
| Longpod poppy |
Papaver dubium* |
| FUMARIACEAE |
| Dutchmans-breeches |
Dicentra cucullaria |
| Yellow Corydalis |
Corydalis flavula |
| CANNABACEAE |
| Hop |
Humulus lupulus |
1938 |
| URTICACEAE |
| Stinging nettle |
Urtica dioica* |
1944 |
| Wood-nettle |
Laportea canadensis |
1937 |
| False-nettle |
Boehmeria cylindrica |
1937 |
| Richweed |
Pilea pumila |
1937 |
| PHYTOLACCACEAE |
| Pokeweed |
Phytolacca americana |
1937 |
| CACTACEAE |
| Pricklypear |
Opuntia humifusa |
| CHENOPODIACEAE |
| Lambs-quarters |
Chenopodium album* |
1937 |
| Mexican-tea |
Chenopodium ambrosioides* |
1937 |
| AMARANTHACEAE |
| Slim pigweed |
Amaranthus hybridus |
1937 |
| Redroot pigweed |
Amaranthus retroflexus |
1946 |
| Spiny pigweed |
Amaranthus spinosus |
1944 |
| PORTULACACEAE |
| Purslane |
Portulaca oleracea* |
1944 |
| Spring-beauty |
Claytonia virginica |
1936 |
| MOLLUGINACEAE |
| Carpetweed |
Mollugo verticillata* |
1937 |
| CARYOPHYLLACEAE |
| Thyme-leaf sandwort |
Arenaria serpyllifolia* |
1937 |
| Clammy chickweed |
Cerastium glomeratum |
1937,1946 |
| Mouse-ear chickweed |
Cerastium vulgatum* |
1941,1967 |
| Common stitchwort |
Stellaria graminea* |
1956,1962 |
| Longleaf stitchwort |
Stellaria longifolia* |
1937 |
| Common chickweed |
Stellaria media* |
1937,1967 |
| Star chickweed |
Stellaria pubera |
1937 |
| Knawel |
Scleranthus annuus* |
| Corn spurrey |
Spergula arvensis* |
|
| Forked chickweed |
Paronychia fastigiata |
| Cockle |
Agrostemma githago* |
1941 |
| Sleepy catchfly |
Silene antirrhina |
1941 |
| White campion |
Silene latifolia |
1937 |
| Starry campion |
Silene stellata |
1944 |
| Bouncing Bet |
Saponaria officinalis* |
1948 |
| Deptford pink |
Dianthus armeria* |
1937 |
| POLYGONACEAE |
| Sheep-sorrel |
Rumex acetosella* |
| Yellow dock |
Rumex crispus* |
| Bitter dock |
Rumex obtusifolius* |
| Halberd-leaf tear-thumb |
Polygonum arifolium |
1937 |
| Knotweed |
Polygonum aviculare* |
1937 |
| Tufted smartweed |
Polygonum cespitosum* |
1954,1961 |
| Black bindweed |
Polygonum convolvulus* |
1950 |
| Southern smartweed |
Polygonum densiflorum* |
1959,1962 |
| Upright knotweed |
Polygonum erectum |
| Common smartweed |
Polygonum hydropiper |
1937,1965 |
| Swamp smartweed |
Polygonum hydropiperoides |
1937 |
| Nodding smartweed |
Polygonum lapathifolium |
1952 |
| Prince's plume |
Polygonum orientale* |
1938,1973 |
| Chinese tearthumb |
Polygonum perfoliatum* |
|
| Pennsylvania smartweed |
Polygonum pensylvanicum |
1937 |
| Ladys-thumb |
Polygonum persicaria* |
1937 |
| Dotted smartweed |
Polygonum punctatum* |
1937,1952,1966,1970 |
| Arrow-leaf tear-thumb |
Polygonum sagittatum |
1937 |
| False buckwheat |
Polygonum scandens |
1937,1938 |
| Slim knotweed |
Polygonum tenue |
1942 |
| Jumpseed |
Polygonum virginianum |
1937 |
| CLUSIACEAE |
| St. Andrew's cross |
Hypericum hypericoides |
1937 |
| Lesser Canadian St. John's wort |
Hypericum canadense |
1937 |
| Coppery St. John's-wort |
Hypericum denticulatum |
1937,1938 |
| Pineweed |
Hypericum gentianoides |
1937 |
| Dwarf St. John's-wort |
Hypericum mutilum |
1937,1946 |
| Common St. John's-wort |
Hypericum perforatum* |
1938 |
| Spotted St. John's-wort |
Hypericum punctatum |
1937 |
| Lesser Marsh St. John's-wort |
Triadenum tubulosum |
1938 |
| Marsh St. John's-wort |
Triadenum virginicum |
1937 |
| MALVACEAE |
| Rose mallow |
Hibiscus moscheutos |
1946 |
| Flower-of-an-hour |
Hibiscus trionum* |
1940,1946 |
| Velvet-leaf |
Abutilon theophrasti* |
1938 |
| Cheeses |
Malva neglecta* |
| Prickly sida |
Sida spinosa* |
| DROSERACEAE |
| Spoonleaf sundew |
Drosera intermedia |
| CISTACEAE |
| Frostweed |
Helianthemum bicknellii |
1937,1978 |
| Frostweed |
Helianthemum canadense |
1937,1944 |
| Pinweed |
Lechea pulchella |
1943 |
| Pinweed |
Lechea racemulosa |
1937 |
| VIOLACEAE |
| Woodland blue violet |
Viola affinis |
1937,1938 |
| Field violet |
Viola arvensis* |
1977 |
| Wild pansy |
Viola bicolor |
| Coast violet |
Viola brittoniana |
1938 |
| Blue marsh violet |
Viola cucullata |
1937,1938,1943 |
| Lance-leaf violet |
Viola lanceolata |
1936 |
| Wood violet |
Viola palmata |
| Birdfoot violet |
Viola pedata |
1943 |
| Primrose-leaf violet |
Viola X primulifolia |
| Yellow violet |
Viola pubescens (prob. var pubescens) |
1937,1938,1944 |
| Arrowleaf violet |
Viola sagittata |
1937, 1941 |
| Common blue violet |
Viola sororia |
1940 |
| PASSIFLORACEAE |
| Yellow passion-flower |
Passiflora lutea |
| CUCURBITACEAE |
| Star-cucumber |
Sicyos angulatus |
1937,1976 |
| BRASSICACEAE |
| Field mustard |
Brassica rapa* |
| Radish |
Raphanus sativus* |
1942 |
| Field cress |
Lepidium campestre* |
1937,1944 |
| Wild peppergrass |
Lepidium virginicum |
1937 |
| Pennycress |
Thlaspi arvense* |
1943 |
| Barestem teesdalia |
Teesdalia nudicaulis |
| Shepherd's purse |
Capsella bursa-pastoris* |
1937,1967 |
| Whitlow-grass |
Draba verna* |
| Bulbous bitter-cress |
Cardamine bulbosa |
1937 |
| Cutleaf toothwort |
Cardamine concatenata |
1937,1938 |
| Early bittercress |
Cardamine hirsuta |
| Pennsylvania bitter-cress |
Cardamine pensylvanica |
| Common yellow-cress |
Rorippa palustris |
1942 |
| Common wintercress |
Barbarea vulgaris* |
1938,1949,1972 |
| Early wintercress |
Barbarea verna* |
1937,1938 |
| Garlic mustard |
Alliaria petiolata* |
| Tumble-mustard |
Sisymbrium altissimum* |
1938 |
| Hedge-mustard |
Sisymbrium officinale* |
1938,1942 |
| Mouse-ear cress |
Arabidopsis thaliana |
1936 |
| PYROLACEAE |
| One-sided shinleaf |
Orthilia secunda |
1937 |
| Rounded shinleaf |
Pyrola americana |
1936,1937 |
| Green-flowered shinleaf |
Pyrola chlorantha |
| Elliptic shinleaf |
Pyrola elliptica |
1937 |
| MONOTROPACEAE |
| Pinesap |
Monotropa hypopithys |
1937 |
| Indian-pipe |
Monotropa uniflora |
1937 |
| PRIMULACEAE |
| Fringed loosestrife |
Lysimachia ciliata |
1937 |
| Lance-leaved loosestrife |
Lysimachia lanceolata |
1937,1938 |
| Moneywort |
Lysimachia nummularia* |
1937 |
| Whorled loosestrife |
Lysimachia quadrifolia |
1937 |
| Swamp-candle |
Lysimachia terrestris |
1937,1953 |
| Pimpernel |
Anagallis arvensis* |
1938,1964 |
| CRASSULACEAE |
| Ditch-stonecrop |
Penthorum sedoides |
1937 |
| SAXIFRAGACEAE |
| Alumroot |
Heuchera americana |
1937 |
| ROSACEAE |
| Bowmans-root |
Porteranthus trifoliatus |
| Wild strawberry |
Fragaria virginiana |
1937 |
| Mock-strawberry |
Duchesnea indica* |
1945 |
| Silver cinquefoil |
Potentilla argentea* |
| Dwarf cinquefoil |
Potentilla canadensis |
1937,1943 |
| Rough cinquefoil |
Potentilla norvegica |
1937 |
| Sulfur cinquefoil |
Potentilla recta* |
1938,1968 |
| Common cinquefoil |
Potentilla simplex |
1937,1943,1946 |
| White avens |
Geum canadense |
1937,1945 |
| Spring avens |
Geum vernum |
1942 |
| Southern agrimony |
Agrimonia parviflora |
1937 |
| Downy agrimony |
Agrimonia pubescens |
1937 |
| Burnet |
Sanguisorba canadensis |
1937 |
| FABACEAE |
| Big partridge-pea |
Chamaecrista fasciculata |
1937 |
| Little partridge-pea |
Chamaecrista nictitans |
1937,1942 |
| Wild senna |
Senna hebecarpa |
1941 |
| Sicklepod |
Senna obtusifolia |
1959 |
| Wild-indigo |
Baptisia tinctoria |
1937 |
| Rattlebox |
Crotalaria sagittalis |
1937 |
| Goat's rue |
Tephrosia virginiana |
1937 |
| Pencil-flower |
Stylosanthes biflora |
1937 |
| Birds-foot trefoil |
Lotus corniculatus |
| Crown vetch |
Coronilla varia* |
| Rabbitfoot clover |
Trifolium arvense* |
1937 |
| Hop clover |
Trifolium aureum* |
1937 |
| Pinnate hop clover |
Trifolium campestre* |
1937,1952 |
| Little hop clover |
Trifolium dubium* |
1945 |
| Alsike |
Trifolium hybridum* |
1937,1938 |
| Red clover |
Trifolium pratense* |
1937 |
| White clover |
Trifolium repens* |
1938,1951 |
| White sweetclover |
Melilotus alba* |
1938 |
| Yellow sweetclover |
Melilotus officinalis* |
1938 |
| Black medic |
Medicago lupulina* |
1938 |
| Alfalfa |
Medicago sativa* |
1938 |
| Narrowleaf vetch |
Vicia sativa* |
1938 |
| Sparrow vetch |
Vicia tetrasperma* |
1942 |
| Hairy vetch |
Vicia villosa* |
1938, 1978 |
| Little leaf tick-trefoil |
Desmodium ciliare |
1937,1941,1945 |
| Big tick-trefoil |
Desmodium cuspidatum |
1937 |
| Dillenius' tick-trefoil |
Desmodium glabellum |
| Smooth tick-trefoil |
Desmodium laevigatum |
1941 |
| Maryland tick-trefoil |
Desmodium marilandicum |
1941 |
| Naked tick-trefoil |
Desmodium nudiflorum |
1937 |
| Stiff tick-trefoil |
Desmodium obtusum |
1941 |
| Panicledleaf tick-trefoil |
Desmodium paniculatum |
1937,1941 |
| Perplexed tick-trefoil |
Desmodium perplexum |
1937,1941 |
| Round-leaved tick-trefoil |
Desmodium rotundifolium |
1938 |
| Velvety tick-trefoil |
Desmodium viridiflorum |
1937,1941 |
| Shrub lespedeza |
Lespedeza bicolor |
| Roundhead lespedeza |
Lespedeza capitata |
1937 |
| Sericea lespedeza |
Lespedeza cuneata |
1941 |
| Hairy lespedeza |
Lespedeza hirta |
1937,1938 |
| Wand lespedeza |
Lespedeza intermedia |
1937,1941 |
| Nuttall lespedeza |
Lespedeza X nuttallii |
1941 |
| Trailing lespedeza |
Lespedeza procumbens |
1941 |
| Creeping lespedeza |
Lespedeza repens |
1937 |
| Stuve lespedeza |
Lespedeza stuevei |
1941,1946 |
| Bush clover |
Lespedeza violacea |
|
| Slender lespedeza |
Lespedeza virginica |
1941 |
| Korean lespedeza |
Kummerowia stipulacea* |
1941 |
| Common lespedeza |
Kummerowia striata* |
1941 |
| Wild-bean |
Strophostyles umbellata |
1937 |
| Potato-bean |
Apios americana |
1937 |
| Hog-peanut |
Amphicarpaea bracteata |
1937 |
| PODOSTEMACEAE |
| Riverweed |
Podostemum ceratophyllum |
1937 |
| HALORAGACEAE |
| Parrot's feather |
Myriophyllum aquaticum* |
|
| Low watermilfoil |
Myriophyllum humile |
|
| Mermaid-weed |
Proserpinaca palustris |
1937,1948,1962,1968 |
| LYTHRACEAE |
| Tooth-cup |
Rotala ramosior |
1937,1938,1963 |
| Blue wax-weed |
Cuphea viscosissima |
1937 |
| ONAGRACEAE |
| Seedbox |
Ludwigia alternifolia |
1937,1944,1956,1957 |
| Water-purslane |
Ludwigia palustris |
1937,1952 |
| Primrose willow |
Ludwigia peploides ssp. glabrescens |
|
| Globe-fruited ludwigia |
Ludwigia sphaerocarpa |
|
| Willow-herb |
Epilobium coloratum |
1937 |
| Common evening-primrose |
Oenothera biennis |
1937 |
| Sundrops |
Oenothera fruticosa |
1937,1938,1961 |
| Cutleaf evening-primrose |
Oenothera laciniata |
1942 |
| Little sundrops |
Oenothera perennis |
1943 |
| Biennial gaura |
Gaura biennis |
1960 |
| Enchanters-nightshade |
Circaea lutetiana |
1937 |
| MELASTOMATACEAE |
| Maryland meadow-beauty |
Rhexia mariana |
| Virginia meadow-beauty |
Rhexia virginica |
| SANTALACEAE |
| Bastard toadflax |
Comandra umbellata |
1937 |
| EUPHORBIACEAE |
| Short-slalk copperleaf |
Acalypha gracilens |
1937,1958 |
| Rhombic copperleaf |
Acalypha virginica (prob. var. rhomboidea) |
1937 |
| Flowering spurge |
Euphorbia corollata |
1937 |
| Cypress spurge |
Euphorbia cyparissias* |
|
| Wartweed |
Euphorbia helioscopia* |
1953 |
| Ipecac spurge |
Euphorbia ipecacuanhae |
1937 |
| Spotted sandmat |
Chamaesyce maculata |
1941,1944 |
| Spotted spurge |
Chamaesyce nutans |
1937 |
| LINACEAE |
| Coastal plain yellow flax |
Linum floridanum |
1937,1938 |
| Ridgestem yellow flax |
Linum striatum |
1938 |
| Common flax |
Linum usitatissimum |
1940 |
| Virginia yellow flax |
Linum virginianum |
1937 |
| POLYGALACEAE |
| Appalachian milkwort |
Polygala curtissii |
1937,1944 |
| Orange milkwort |
Polygala lutea |
| Maryland milkwort |
Polygala mariana |
1942,1944 |
| Blood milkwort |
Polygala sanguinea |
1937,1941 |
| Whorled milkwort |
Polygala verticillata |
1937 |
| OXALIDACEAE |
| Dillen's oxalis |
Oxalis dillenii |
| Common yellow wood-sorrel |
Oxalis stricta |
1937, 1944 |
| Violet wood-sorrel |
Oxalis violacea |
1942 |
| GERANIACEAE |
| Carolina crane's bill |
Geranium carolinianum |
1937,1938 |
| Wild geranium |
Geranium maculatum |
1937,1944 |
| Small geranium |
Geranium pusillum |
1943 |
| Redstem-filaree |
Erodium cicutarium* |
1935,1967 |
| BALSAMINACEAE |
| Touch-me-not |
Impatiens capensis |
1937 |
| ARALIACEAE |
| Wild-sarsaparilla |
Aralia nudicaulis |
1937 |
| Dwarf ginseng |
Panax trifolius |
1936,1944 |
| English ivy |
Hedera helix* |
| APIAECAE |
| Pennywort |
Hydrocotyle americana |
1937 |
| Floating pennywort |
Hydrocotyle ranunculoides |
1960 |
| Snakeroot |
Sanicula canadensis |
| Honewort |
Cryptotaenia canadensis |
1937 |
| Wild carrot |
Daucus carota* |
1937 |
| Meadow-parsnip |
Thaspium barbinode |
1937 |
| Water-hemlock |
Cicuta maculata |
1937 |
| Cowbane |
Oxypolis rigidior |
1937 |
| Hairy angelica |
Angelica venenosa |
1937 |
| GENTIANACEAE |
| Common marsh-pink |
Sabatia angularis |
1937 |
| Closed gentian |
Gentiana clausa |
1937,1938 |
| Screw-stem |
Bartonia paniculata |
1937,1947 |
| Yellow bartonia |
Bartonia virginica |
|
| APOCYNACEAE |
| Periwinkle |
Vinca minor* |
1947 |
| Hemp-dogbane |
Apocynum cannabinum |
1937,1946 |
| ASCLEPIADACEAE |
| Clasping milkweed |
Asclepias amplexicaulis |
1938 |
| Swamp milkweed |
Asclepias incarnata (prob. ssp. pulchra) |
1937,1965 |
| Purple milkweed |
Asclepias purpurascens |
| Common milkweed |
Asclepias syriaca |
1945 |
| Butterfly-weed |
Asclepias tuberosa |
1937,1971 |
| Green milkweed |
Asclepias viridiflora |
1938 |
| SOLANACEAE |
| Ground-cherry |
Physalis longifolia (prob. var. subglabrata) |
1938,1946 |
| Horse-nettle |
Solanum carolinense |
1937 |
| Deadly nightshade |
Solanum dulcamara |
|
| Black nightshade |
Solanum nigrum* |
1937 |
| Jimson-weed |
Datura stramonium* |
1937 |
| CONVOLVULACEAE |
| Hedge bindweed |
Calystegia sepium |
| Red morning-glory |
Ipomoea coccinea |
1948 |
| Ivy-leaved morning-glory |
Ipomoea hederacea* |
1937 |
| White morning-glory |
Ipomoea lacunosa |
1937 |
| Wild potato |
Ipomoea pandurata |
1937 |
| Common morning-glory |
Ipomoea purpurea* |
1937,1944 |
| CUSCUTACEAE |
| Compact dodder |
Cuscuta compacta |
1937,1947 |
| Common dodder |
Cuscuta gronovii |
1944 |
| Field dodder |
Cuscuta pentagona |
1944,1954 |
| POLEMONIACEAE |
| Spotted phlox |
Phlox maculata |
1937,1970 |
| HYDROPHYLLACEAE |
| Eastern waterleaf |
Hydrophyllum virginianum |
1937,1944 |
| BORAGINACEAE |
| Eastern bluebells |
Mertensia virginica |
1938 |
| Forget-me-not |
Myosotis laxa |
1937 |
| Corn gromwell |
Buglossoides arvensis* |
| VERBENACEAE |
| Common vervain |
Verbena hastata |
1937 |
| Narrowleaved vervain |
Verbena simplex |
1941 |
| White vervain |
Verbena urticifolia |
1937 |
| Lopseed |
Phryma leptostachya |
1937 |
| LAMIACEAE |
| Wood-sage |
Teucrium canadense |
1937,1944 |
| Blue-curls |
Trichostema dichotomum |
1937 |
| Hairy skullcap |
Scutellaria elliptica |
1938 |
| Hyssop skullcap |
Scutellaria integrifolia |
1937 |
| Mad-dog skullcap |
Scutellaria lateriflora |
1937 |
| Pennyroyal |
Hedeoma pulegioides |
1937 |
| Mountain mint |
Pycnanthemum incanum |
1937 |
| Mountain mint |
Pycnanthemum muticum |
1937 |
| Mountain mint |
Pycnanthemum tenuifolium |
1937 |
| Mountain mint |
Pycnanthemum verticillatum |
1937 |
| Wild mint |
Mentha arvensis |
1937 |
| Horse-balm |
Collinsonia canadensis |
1937 |
| Perilla |
Perilla frutescens |
1937 |
| Dittany |
Cunila origanoides |
1938 |
| American water horehound |
Lycopus americanus |
1937,1946 |
| Stalked water horehound |
Lycopus rubellus |
1942 |
| Northern water horehound |
Lycopus uniflorus |
1937 |
| Virginia water horehound |
Lycopus virginicus |
1937 |
| Ground-ivy |
Glechoma hederacea* |
1937,1964 |
| Heal-all |
Prunella vulgaris* |
1937 |
| Henbit |
Lamium amplexicaule* |
1937 |
| Purple Dead-nettle |
Lamium purpureum* |
1960 |
| Motherwort |
Leonurus cardiaca* |
1937 |
| Hedge nettle |
Stachys cordata |
1968,1977 |
| Hyssop hedge-nettle |
Stachys hyssopifolia |
1945,1971 |
| Marsh Betony |
Stachys palustris* |
1954 |
| Smooth hedge nettle |
Stachys tenuifolia |
1942 |
| Wild bergamot |
Monarda fistulosa |
|
| Horse-mint |
Monarda punctata |
1942,1963 |
| Wild-basil |
Clinopodium vulgare* |
1942 |
| CALLITRICHACEAE |
| Larger water starwort |
Callitriche heterophylla |
1937,1938,1949,1957,1966,1970 |
| Pond water starwort |
Callitriche stagnalis* |
1947,1948,1949 |
| Terrestrial water starwort |
Callitriche terrestris |
| PLANTAGINACEAE |
| Bottle-brush plantain |
Plantago aristata |
1937 |
| Narrowleaf plantain |
Plantago lanceolata* |
1937 |
| Common plantain |
Plantago major* |
1941,1942 |
| Rugel plantain |
Plantago rugelii* |
1937 |
| Virginia plantain |
Plantago virginica |
1937 |
| SCROPHULARIACEAE |
| Golden-pert |
Gratiola aurea |
|
| Hedge-hyssop |
Gratiola neglecta |
1945,1946,1949 |
| Hairy hedge-hyssop |
Gratiola pilosa |
1958 |
| Hedge-hyssop |
Gratiola virginiana |
1937,1949,1950 |
| Sticky hedge-hyssop |
Gratiola viscidula |
1958,1968 |
| Sharpwing monkey-flower |
Mimulus alatus |
1937 |
| Allegheny monkey-flower |
Mimulus ringens |
1937 |
| False pimpernel |
Lindernia dubia (prob. var. anagallidea) |
1937,1938 |
| Moth mullein |
Verbascum blattaria* |
1937,1968 |
| Common mullein |
Verbascum thapsus* |
1937 |
| White turtlehead |
Chelone glabra |
1937 |
| Tall white beard-tongue |
Penstemon digitalis |
1950,1977 |
| Hairy beard-tongue |
Penstemon hirsutus |
1959 |
| Downy false-foxglove |
Aureolaria virginica |
1937,1945 |
| Blunt-leaved agalinus |
Agalinis obtusifolia |
1937 |
| Purple agalinus |
Agalinis purpurea |
1937,1944 |
| Garden speedwell |
Veronica agrestis* |
|
| Corn speedwell |
Veronica arvensis* |
1937,1938 |
| Common speedwell |
Veronica officinalis* |
1937 |
| Purslane speedwell |
Veronica peregrina |
1937,1959 |
| Birds-eye speedwell |
Veronica persica* |
1940,1967 |
| Thyme-leaved speedwell |
Veronica serpyllifolia* |
1944 |
| Swamp lousewort |
Pedicularis lanceolata |
1937 |
| Cow-wheat |
Melampyrum lineare |
1937 |
| Annual toadflax |
Nuttallanthus canadensis |
1937 |
| OROBANCHACEAE |
| Cancer-root |
Orobanche uniflora |
1937,1967 |
| Squawroot |
Conopholis americana |
1954 |
| Beech-drops |
Epifagus virginiana |
1937 |
| LENTIBULARIACEAE |
| Mixed bladderwort |
Utricularia geminiscapa |
1938,1970,1971 |
| Creeping bladderwort |
Utricularia gibba |
1946,1947,1969,1970 |
| Common bladderwort |
Utricularia macrorhiza |
1943,1953,1959 |
| Resupinate bladderwort |
Utricularia resupinata |
1968 |
| CAMPANULACEAE |
| Venus looking-glass |
Triodanis perfoliata |
1937 |
| Cardinal-flower |
Lobelia cardinalis |
1937 |
| Indian-tobacco |
Lobelia inflata |
1937 |
| Downy lobelia |
Lobelia puberula |
1937 |
| Spiked lobelia |
Lobelia spicata |
1937 |
| RUBIACEAE |
| Bluets |
Houstonia caerulea |
1936 |
| Purple houstonia |
Houstonia purpurea |
1937,1966 |
|
Oldenlandia uniflora |
1937 |
| Poor-Joe |
Diodia teres |
1937 |
| Cleavers |
Galium aparine |
1937 |
| Wild-licorice |
Galium circaezans |
1937 |
| Blunt leaved bedstraw |
Galium obtusum |
1937,1945 |
| Hairy bedstraw |
Galium pilosum |
1937 |
| Southern three-lobed bedstraw |
Galium tinctorium |
1937,1960 |
| Sweet bedstraw |
Galium triflorum |
1937,1938 |
| VALERIANACEAE |
| Corn-salad |
Valerianella locusta* |
1944 |
| DIPSACACEAE |
| Teasel |
Dipsacus fullonum ssp. sylvestris* |
| ASTERACEAE |
| Narrow-leaved sunflower |
Helianthus angustifolius |
1944 |
| Forest sunflower |
Helianthus decapetalus |
1942,1944 |
| Swamp sunflower |
Helianthus giganteus |
1937 |
| Jerusalem-artichoke |
Helianthus tuberosus |
1941 |
| Black-eyed Susan |
Rudbeckia hirta |
1937 |
| Cutleaf coneflower |
Rudbeckia laciniata |
1937 |
| Common sneezeweed |
Helenium autumnale |
1938 |
| Southern sneezeweed |
Helenium flexuosum |
1937,1938 |
| Wingstem |
Verbesina alternifolia |
1938 |
| Southern flatseed-sunflower |
Verbesina occidentalis |
1957 |
| Yerba-de-tajo |
Eclipta prostrata* |
1937 |
| Thread-leafed tickseed |
Coreopsis verticillata |
1937 |
| Sunflower beggar-ticks |
Bidens aristosa |
1944 |
| Spanish-needles |
Bidens bipinnata |
1937 |
| Swamp beggar-ticks |
Bidens connata |
1937 |
| Northern tickseed-sunflower |
Bidens coronata |
1941,1951 |
| Few bracted beggar-ticks |
Bidens discoidea |
1961 |
| Common beggar-ticks |
Bidens frondosa |
1939,1941 |
| Ozark tickseed-sunflower |
Bidens polylepis |
1952 |
| Tall beggar-ticks |
Bidens vulgata |
1937 |
| Quickweed |
Galinsoga quadriradiata* |
1937 |
| Common Ragweed |
Ambrosia artemisiifolia |
1937 |
| Giant ragweed |
Ambrosia trifida |
1937 |
| Cocklebur |
Xanthium strumarium (prob. var. glabratum) |
1937 |
| Corn chamomile |
Anthemis arvensis* |
1938 |
| Mayweed |
Anthemis cotula* |
1938 |
| Yarrow |
Achillea millefolium* |
1937 |
| Mugwort |
Artemisia vulgaris* |
| Appalachian groundsel |
Senecio anonymus |
1938,1946 |
| Heart-leaved groundsel |
Senecio aureus |
1937 |
| Fireweed |
Erechtites hieraciifolia |
1937 |
| Coltsfoot |
Tussilago farfara* |
| Golden-aster |
Chrysopsis mariana |
1937,1941 |
| Gum-plant |
Grindelia squarrosa |
1941 |
| White goldenrod |
Solidago bicolor |
1937 |
| Woodland goldenrod |
Solidago caesia |
1937 |
| Tall goldenrod |
Solidago canadensis |
1937,1941 |
| Giant goldenrod |
Solidago gigantea |
1944 |
| Early goldenrod |
Solidago juncea |
1937 |
| Swamp goldenrod |
Solidago latissimifolia |
1942 |
| Dwarf goldenrod |
Solidago nemoralis |
1937,1941 |
| Sweet goldenrod |
Solidago odora |
1941 |
| Downy goldenrod |
Solidago puberula |
1937,1945 |
| Rough goldenrod |
Solidago rugosa |
1937,1941 |
| Slender goldenrod |
Solidago speciosa |
1942 |
| Flat-top goldenrod |
Euthamia graminifolia |
1937 |
| Wood aster |
Aster divaricatus |
1937,1944 |
| Long stalked aster |
Aster dumosus |
1937,1946 |
| White panicle or eastern lined aster |
Aster lanceolatus (prob. ssp. lanceolatus) |
1937,1945,1978 |
| Goblet aster |
Aster lateriflorus |
1937,1942,1978 |
| Clasping aster |
Aster patens |
1945 |
| Awl aster |
Aster pilosus |
1942,1978 |
| Bristly aster |
Aster puniceus |
1937,1942 |
| Small-headed aster |
Aster racemosus |
| Clasping heart-leaved aster |
Aster undulatus |
1937 |
| Annual fleabane |
Erigeron annuus |
1937 |
| Philadelphia fleabane |
Erigeron philadelphicus |
| Rough fleabane |
Erigeron strigosus |
1937 |
| Horseweed |
Conyza canadensis (prob. var. canadensis) |
1937 |
| Marsh fleabane |
Pluchea camphorata |
1941 |
| Howell's pussytoes |
Antennaria howellii |
1937 |
| Field pussytoes |
Antennaria neglecta |
1937,1938,1972 |
| Parlin's pussytoes |
Antennaria parlinii |
1937,1943 |
| Plantain pussytoes |
Antennaria plantaginifolia |
1943 |
| White-bracted eupatorium |
Eupatorium album |
1941,1944 |
| Mist-flower |
Eupatorium coelestinum |
1937 |
| Hyssop-leaved eupatorium |
Eupatorium hyssopifolium |
1937,1941,1944 |
| Joe-Pye weed |
Eupatorium maculatum |
1937,1941,1958 |
| Boneset |
Eupatorium perfoliatum |
1937 |
| Ragged eupatorium |
Eupatorium pilosum |
1937 |
| Round-leaved eupatorium |
Eupatorium rotundifolium |
1937,1941,1944 |
| Late eupatorium |
Eupatorium serotinum |
1975 |
| Climbing hempweed |
Mikania scandens |
1937 |
| Blazing-star |
Liatris pilosa (prob. var. pilosa) |
1937 |
| Broadleaf ironweed |
Vernonia glauca |
1945 |
| New York ironweed |
Vernonia noveboracensis |
1937,1944 |
| Elephants-foot |
Elephantopus carolinianus |
1937 |
| Common burdock |
Arctium minus* |
1942 |
| Musk thistle |
Carduus nutans* |
| Canada thistle |
Cirsium arvense* |
1941 |
| Field thistle |
Cirsium discolor |
1944,1945 |
| Bull thistle |
Cirsium vulgare* |
1937,1945,1971 |
| Cornflower |
Centaurea cyanus* |
1942 |
| Yellow star-thistle |
Centaurea solstitialis* |
1964 |
| Tall rattlesnake root |
Prenanthes altissima or alba |
1945 |
| Lions foot |
Prenanthes serpentaria |
1937 |
| Tall blue lettuce |
Lactuca biennis |
1945 |
| Canada lettuce |
Lactuca canadensis |
1937 |
| Woodland lettuce |
Lactuca floridana |
1944,1945 |
| Prickly lettuce |
Lactuca serriola* |
1938 |
| Prickly sow-thistle |
Sonchus asper* |
1942 |
| Devils-paintbrush |
Hieracium aurantiacum* |
1943 |
| Yellow King-devil |
Hieracium caespitosum* |
1942 |
| Smooth hawkweed |
Hieracium X floribundum* |
| Beaked hawkweed |
Hieracium gronovii |
1937,1942 |
| Panicled hawkweed |
Hieracium paniculatum |
1937,1945 |
| Sticky hawkweed |
Hieracium scabrum |
1937,1942 |
| Veiny hawkweed |
Hieracium venosum |
1937 |
| Virginia dandelion |
Krigia virginica |
1937 |
| Red-seeded dandelion |
Taraxacum erythrospermum* |
1937 |
| Common dandelion |
Taraxacum officinale* |
1938 |
| Skeleton-weed |
Chondrilla juncea* |
1941 |
| Chicory |
Cichorium intybus* |
1937 |
| Spotted cats-ear |
Hypochaeris radicata* |
1942 |
| Little hawkbit |
Leontodon taraxacoides |
1942 |
| Fistulous goats beard |
Tragopogon dubius* |
| White Snakeroot |
Ageratina altissima |
1954 |
| Small-leaved white snakeroot |
Ageratina aromatica |
1937 |
| Sweet everlasting |
Pseudognaphalium obtusifolium |
1937 |
| Appalachian flat-topped white aster |
Doellingeria infirma |
1942 |
| Flat-top aster |
Doellingeria umbellata |
1938 |
| Stiff aster |
Ionactis linariifolius |
1937 |
| Broadleaf Sericocarpus |
Sericocarpus asteroides |
1937,1941 |
| Narrowleaf Sericocarpus |
Sericocarpus linifolius |
1937 |
| Purple cudweed |
Gamochaeta purpurea |
1937 |
| Ox-eye daisy |
Leucanthemum vulgare |
1937 |
| Pale indian-plantain |
Arnoglossum atriplicifolium |
1937 |
| Cup-plant |
Silphium perfoliatum |
|
| ALISMATACEAE |
| Water-plantain |
Alisma subcordatum |
1937 |
| Grass-leaved arrowhead |
Sagittaria graminea |
| Broadleaf arrowhead |
Sagittaria latifolia |
38 |
| Water arrowhead |
Sagittaria subulata |
66,68 |
| HYDROCHARITACEAE |
| Common water-weed |
Elodea canadensis |
57,59,66 |
| Wild-celery |
Vallisneria americana |
46,66,68 |
| POTAMOGETONACEAE |
| Variable pondweed |
Potamogeton diversifolius |
41,57,66,69 |
| Ribbonleaf pondweed |
Potamogeton epihydrus |
1937 |
| Floating pondweed |
Potamogeton natans |
47 |
| Spotted pondweed |
Potamogeton pulcher |
| Slender pondweed |
Potamogeton pusillus |
1938,1960,1966 |
| NAJADACEAE |
| Slender naiad |
Najas gracillima |
66,69,70,71 |
| Southern naiad |
Najas guadalupensis |
47,66,68,70 |
| ACORACEAE |
| Sweet-flag |
Acorus americanus |
1946 |
| ARACEAE |
| Golden-club |
Orontium aquaticum |
1937 |
| Skunk cabbage |
Symplocarpus foetidus |
1938 |
| Arrow-arum |
Peltandra virginica |
| Jack-in-the-pulpit |
Arisaema triphyllum |
1937 |
| LEMNACEAE |
| Water flaxseed |
Spirodela polyrhiza |
1980 |
| Lesser duckweed |
Lemna minor |
1947,1957,1960,1966 |
| Valdivia duckweed |
Lemna valdiviana |
1968 |
| Pointed duckweed |
Wolffia braziliensis |
1961 |
| XYRIDACEAE |
| Carolina yellow-eyed grass |
Xyris caroliniana |
1937,1952,1960 |
| Slender yellow-eyed grass |
Xyris torta |
1937 |
| COMMELINACEAE |
| Asiatic dayflower |
Murdannia keisak* |
1948 |
| Common dayflower |
Commelina communis* |
1937 |
| Hairy dayflower |
Commelina virginica |
1937 |
| SPARAGANIACEAE |
| Bur-reed |
Sparganium americanum |
1937,38,39,65,69 |
| TYPHACEAE |
| Narrow-leaved cattail |
Typha angustifolia |
1947 |
| Common cattail |
Typha latifolia |
1937,45 |
| PONTEDERIACEAE |
| Pickerel-weed |
Pontederia cordata |
1937 |
| Mud-plantain |
Heteranthera reniformis |
| LILIACEAE |
| Featherbells |
Stenanthium gramineum |
1938 |
| Star-grass |
Aletris farinosa |
1937 |
| Star-of-Bethlehem |
Ornithogalum umbellatum* |
1937 |
| Daylily |
Hemerocallis fulva* |
1939 |
| Canada onion |
Allium canadense |
1942 |
| Wild onion |
Allium vineale* |
1937 |
| Turks-cap lily |
Lilium superbum |
1937 |
| Yellow adders-tongue |
Erythronium americanum |
1938 |
| Indian cucumber-root |
Medeola virginiana |
1937 |
| Bellwort |
Uvularia perfoliata |
1941 |
| Little bellwort |
Uvularia sessilifolia |
1937 |
| False lily-of-the-valley |
Maianthemum canadense |
1937 |
| False solomons-seal |
Maianthemum racemosum |
1937 |
| Smooth or big solomons-seal |
Polygonatum biflorum (prob. var. commutatum) |
1937,1944 |
| Asparagus |
Asparagus officinalis* |
1957 |
| Yellow star-grass |
Hypoxis hirsuta |
1937 |
| Summer snowflake |
Leucojum aestivum |
1956 |
| Daffodil |
Narcissus pseudonarcissus |
1946 |
| Yucca |
Yucca filamentosa |
|
| SMILACACEAE |
| Carrion-flower |
Smilax herbacea |
1937 |
| DIOSCOREACEAE |
| Chinese yam or cinnamon vine |
Dioscorea oppositifolia* |
| Wild yam-root |
Dioscorea quaternata |
| IRIDACEAE |
| Narrowleaf blue-eyed grass |
Sisyrinchium angustifolium |
1937,1938 |
| Eastern blue-eyed grass |
Sisyrinchium atlanticum |
1937,1963 |
| Yellow iris |
Iris pseudacorus* |
1946 |
| Blue iris |
Iris versicolor |
1938,1946 |
| ORCHIDACEAE |
| Pink lady-slipper |
Cypripedium acaule |
| Nodding ladies-tresses |
Spiranthes cernua |
1937 |
| Slender ladies-tresses |
Spiranthes lacera (prob. var. gracilis) |
1945 |
| Upland ladies-tresses |
Spiranthes vernalis |
1945 |
| Rattlesnake-plantain |
Goodyera pubescens |
1937 |
| Whorled pogonia |
Isotria verticillata |
1937,1944 |
| Cranefly orchid |
Tipularia discolor |
1936,1938 |
| Late coralroot |
Corallorrhiza odontorhiza |
1942,1945,1960 |
| Showy orchid |
Galearis spectabilis |
1945 |
| Orange fringe-orchid |
Platanthera ciliaris |
1937 |
| Green wood-orchid |
Platanthera clavellata |
1942 |
| Tubercled orchid |
Platanthera flava |
1945,1968 |
| Green fringe-orchid |
Platanthera lacera |
1938 |
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