| Family |
Taxon |
Common Name | Photographs |
|---|
| Brassicaceae |
Capsella bursa-pastoris (L.) Medik. |
shepherd's-purse |
|
| Brassicaceae |
Cardamine bulbosa (Schreb. ex Muhl.) Britton, Sterns & Poggenb. |
spring-cress |
|
| Brassicaceae |
Cardamine concatenata (Michx.) O.Schwarz |
cut-leaved toothwort, five-parted toothwort |
|
| Brassicaceae |
Cardamine pensylvanica Muhl. ex Willd. |
Pennsylvania bitter-cress |
|
| Cyperaceae |
Carex hirtifolia Mack. |
hairy sedge, hairy wood sedge, pubescent sedge |
|
| Cyperaceae |
Carex pensylvanica Lam. |
common oak sedge, Pennsylvania sedge |
|
| Cyperaceae |
Carex rosea Schkuhr ex Willd. |
curly-styled wood sedge, rosy sedge, stellate sedge |
|
| Cyperaceae |
Carex sprengelii Dewey ex Spreng. |
long-beaked sedge, Sprengel's sedge |
|
| Cyperaceae |
Carex vulpinoidea Michx. |
brown fox sedge, fox sedge |
|
| Betulaceae |
Carpinus caroliniana Walter subsp. virginiana (Marshall) Furlow |
American hornbeam, blue-beech, hornbeam, ironwood |
|
| Juglandaceae |
Carya cordiformis (Wangenh.) K.Koch |
bitter-nut hickory, pig-nut, yellow-bud hickory |
|
| Juglandaceae |
Carya ovata (Mill.) K.Koch var. ovata |
shagbark hickory, shellbark hickory |
|
| Scrophulariaceae |
Castilleja coccinea (L.) Spreng. |
Indian paintbrush, scarlet painted-cup |
|
| Bignoniaceae |
Catalpa speciosa (Warder ex Barney) Warder ex Engelm. |
northern catalpa |
|
| Berberidaceae |
Caulophyllum thalictroides (L.) Michx. |
blue cohosh, papoose-root, squaw-root |
|
| Rhamnaceae |
Ceanothus americanus L. |
New Jersey tea, red-root |
|
| Celastraceae |
Celastrus scandens L. |
American bittersweet, climbing bittersweet |
|
| Ulmaceae |
Celtis occidentalis L. |
northern hackberry |
|
| Poaceae |
Cenchrus longispinus (Hack.) Fernald |
field sandbur, innocent-weed, mat sandbur, sandbur |
|
| Caryophyllaceae |
Cerastium fontanum Baumg. emend Jalas subsp. vulgare (Hartm.) Greuter & Burdet |
big mouse-ear chickweed, common chickweed, common mouse-ear, mouse-ear chickweed |
|
| Caesalpiniaceae |
Cercis canadensis L. var. canadensis |
eastern redbud |
|
| Euphorbiaceae |
Chamaesyce maculata (L.) Small |
milk-purslane, spotted sand-mat, wart-weed |
|
| Euphorbiaceae |
Chamaesyce nutans (Lag.) Small |
eye-bane, nodding spurge |
|
| Chenopodiaceae |
Chenopodium album L. |
common lamb's-quarters, lamb's-quarters, pigweed |
|
| Chenopodiaceae |
Chenopodium simplex (Torr.) Raf. |
maple-leaved goosefoot |
|
| Asteraceae |
Cichorium intybus L. |
blue-sailors, chicory |
|
| Onagraceae |
Circaea alpina L. subsp. alpina |
alpine enchanter's-nightshade, northern enchanter's-nightshade, small enchanter's-nightshade |
|
| Onagraceae |
Circaea lutetiana L. subsp. canadensis (L.) Asch. & Magnus |
broad-leaf enchanter's-nightshade |
|
| Asteraceae |
Cirsium arvense (L.) Scop. |
Canada thistle, creeping thistle, field thistle |
|
| Asteraceae |
Cirsium discolor (Muhl. ex Willd.) Spreng. |
field thistle, pasture thistle, prairie thistle |
|
| Asteraceae |
Cirsium vulgare (Savi) Ten. |
bull thistle |
|
| Portulacaceae |
Claytonia virginica L. |
spring-beauty, Virginia spring-beauty |
|
| Ranunculaceae |
Clematis virginiana L. |
devil's-darning-needle, virgin's-bower |
|
| Orchidaceae |
Coeloglossum viride (L.) Hartm. var. virescens (Muhl.) Luer |
long-bracted green orchid, frog orchid |
|
| Santalaceae |
Comandra umbellata (L.) Nutt. subsp. umbellata |
bastard-toadflax, false toadflax |
|
| Liliaceae |
Convallaria majalis L. var. majalis |
European lily-of-the-valley, lily-of-the-valley |
|
| Convolvulaceae |
Convolvulus arvensis L. |
field bindweed |
|
| Asteraceae |
Conyza canadensis (L.) Cronquist var. canadensis |
Canadian horseweed, fleabane, hogweed |
|
| Cornaceae |
Cornus alternifolia L.f. |
alternate-leaved dogwood, pagoda dogwood |
|
| Cornaceae |
Cornus racemosa Lam. |
gray dogwood, northern swamp dogwood, panicled dogwood |
|
| Cornaceae |
Cornus stolonifera Michx. |
red osier dogwood |
|
| Betulaceae |
Corylus americana Walter |
American hazelnut |
|
| Rosaceae |
Crataegus crus-galli L. |
cockspur hawthorn |
|
| Rosaceae |
Crataegus disperma Ashe |
spreading hawthorn |
|
| Rosaceae |
Crataegus macrosperma Ashe |
big-fruit hawthorn, large-seeded hawthorn |
|
| Rosaceae |
Crataegus mollis (Torr. & A.Gray) Scheele |
downy hawthorn |
|
| Rosaceae |
Crataegus punctata Jacq. |
dotted hawthorn |
|
| Pteridaceae |
Cryptogramma stelleri (S.G.Gmel.) Prantl |
slender cliff brake, fragile rock brake, Steller's rock brake |
|
| Apiaceae |
Cryptotaenia canadensis (L.) DC. |
Canadian honewort, white chervil |
|
| Boraginaceae |
Cynoglossum officinale L. |
common hound's-tongue, gypsy-flower |
|
