Campion, Evening (see Lychnis, Evening/ Evening Campion) Campion, Rose (see Pink, Mullein/ Rose Campion) Campion, Starry Silene stellata Pink Canada mayflower (see Lily of the valley, wild) Cardinal Flower Lobelia cardinalis Lobelia Carpetweed/ Indian Chickweed/ Devil's Grip Mollugo verticellata Carpetweed Carrion Flower Smilax herbacea Lily Carrot, Wild (see Queen Anne's Lace/ Wild Carrot) Cat's-ear Hypochoeris radicata Dandelion-Like Catalpa, Hardy (see Catalpa, Northern) Catalpa, Northern Catalpa speciosa Bignonia Catchfly, Night Flowering Silene noctiflora Pink Catfoot/Sweet Everlasting Gnaphalium obtusifolia No Obvious Symmetry Catnip Nepeta cataria Mint Cattail, Common Typha latifolia Cattail Cattail, Narrow-leaved Typha angustifolia Cattail Cedar, Northern White Thuja occidentalis Cypress Celandine Chelidonium majus Poppy Celandine Poppy, Wood Poppy Stylophorum diphyllum Poppy Ceramic parchment Xylobolus frustulatus Fungus Chamomile, stinking (see Mayweed) Charlock Brassica kaber Mustard Checkerberry (see Wintergreen/ TeaBerry/ Checkerberry) Cheeses (see Mallow, Common/ Cheeses) Cherry, Bird (see Cherry, Sweet) Cherry, Black Prunus serotina Rose Cherry, Mazzard (see Cherry, Sweet) Cherry, Sweet Prunus avium Rose Cherry, Wild (see Cherry, Black) Chestnut, American Castanea dentata Beech Chestnut, Chinese Castanea mollissima Beech Chicken mushroom (see Chicken of the woods) Chicken of the woods Laetiporus sulphureus Fungus Chickweed, Common Mouse-ear Cerastium vulgatum Pink Chickweed, Common/ Starwort Stelleria media Pink Chickweed, Giant Stellaria aquatica Pink Chickweed, great (see Chickweed, star) Chickweed, Indian (see Carpetweed/ Indian Chickweed/ Devil's Grip) Chickweed, Long-leaved/ Long Leaved Stitchwort Stellaria longifolia Pink Chickweed, Marsh (see Starwort, Bog/ Marsh Chickweed) Chickweed, Mouse-ear Cerastium viscosum Pink Chickweed, star Stellaria pubera Pink Chicory Cichorium intybus Miscellaneous Choke Cherry Prunus virginiana Rose Cicely, Sweet Osmorhiza claytoni Parsley Cigar tree (see Catalpa, Northern) Cinquefoil, Common Potentilla simplex Rose Cinquefoil, Dwarf/ Fivefingers Potentilla canadensis Rose Cinquefoil, Rough Potentilla norvegica Rose Cinquefoil, Rough Fruited Potentilla recta Rose Cinquefoil, Shrubby Potentilla fruticosa Rose Clearweed Pilea purnila Nettle Cleavers/ Goosegrass Galium apartine Bedstraw (Madder) Clintonia, White Clintonia umbellulata Lily Clotbur Xanthium italicum Composite Clotbur, Common Xanthium chinense Composite Clover, Hop Trifolium agrarium Pea Clover, Least Hop/ Little Hop Clover Trifolium dubium Pea Clover, Little Hop (see Clover, Least Hop/ Little Hop Clover) Clover, Rabbit-foot Trifolium arvense Pea Clover, Red Trifolium, pratense Pea Clover, Smaller Hop/ Low Hop Clover Trifolium procumbens Pea Clover, White Trifolium repens Pea Clover, White Sweet Melilotus alba Pea Clover, Yellow Sweet Melilotus officinalis Pea Clubfoot Amanita rhopalopus Fungus Clubmoss, Fan Diphasiastrum digitatum Clubmoss Clubmoss, Round-branched (see Pine, Ground) Clubmoss, Running (see Clubmoss, Staghorn) Clubmoss, Shining Huperzia lucidula Clubmoss Clubmoss, Staghorn Lycopodium clavatum Clubmoss Clubmoss, Trailing Evergreen (see Clubmoss, Shining) Clubmoss, Tree (see Pine, Ground) Cocklebur (see Clotbur, Common) Cohosh, Black/ Bugbane/ Black Snakeroot Cimicifuga racemosa Buttercup Cohosh, Blue Caulophyllum thalictroides Barberry Coltsfoot, Coughwort Tussilago farfara Dandelion-Like Columbine, Eastern (see Columbine, Wild/ Eastern Columbine) Columbine, Garden Aquilega vulgaris Buttercup Columbine, Wild/ Eastern Columbine Aquilegia canadensis Buttercup Comfrey Symphytum officinale Forget-Me-Not/Borage Compass Plant (see Lettuce, Prickly/ Compass Plant) Coneflower, Green-Headed/ Wild Goldenglow Rudbeckia laciniata Sunflower-Like Coneflower, purple Echinacea purpurea Composite Coneflower, thin-leaved (see Brown-eyed Susan) Coreopsis, Lance-leaved Coreopsis lanceolata Composite Corn Salad Valerianella olitoria Valerian Corydalis, Yellow Corydalis flavula Poppy Cottonwood, common (see Cottonwood, eastern) Cottonwood, eastern Populus deltoides Willow Coughwort (see Coltsfoot, Coughwort) Cow-wheat Melampyrum lineare Snapdragon (Figwort) Cowbane, Spotted (see Water-Hemlock/ Spotted Cowbane) Cowslip, Virginia (see Bluebells, Virginia/ Virginia Cowslip/ Mertensia) Crabapple, Wild Malus coronaria Rose Cranberry, Highbush (see Viburnum, Cranberry) Cranesbill, Carolina Geranium carolinianum Geranium Cranesbill, Dove's Foot Geranium molle Geranium Cranesbill, Small-Flowered Geranium pusillum Geranium Creeper, Thicket Parthenocissus inserta Grape Creeper, Virginia Parthenocissus quinquefolia Grape Cress, Bitter (see Cress, Spring/ Bitter Cress) Cress, Bitter Winter (see Cress, Winter/ Bitter Winter Cress) Cress, Cow/ Field Pepper-Grass Lepidium campestre Mustard Cress, Creeping Yellow Rorippa sylvestris Mustard Cress, Mouse Ear/ Thale-Cress Sisymbrium thalianum Mustard Cress, Purple Cardamine douglassii Mustard Cress, Spring/ Bitter Cress Cardamine bulbosa Mustard Cress, Winter/ Bitter Winter Cress Barbarea vulgaris Mustard Cress, Yellow Rorippa islandica Mustard Crinkleroot (see Toothwort, Two Leaved/ Pepperwort/ Crinkleroot) Crowfoot, Celery-leaved (see Crowfoot, Cursed) Crowfoot, Cursed (see Crowfoot, Cursed) Crowfoot, early (see Buttercup, early) Crown coral fungus Clavicorona pyxidata Fungus Crust, reddish brown Tabacena hymenochaete Fungus Cucumber Tree Magnolia acuminata Magnolia Cucumber, Bur/ Star Cucumber Sicyos angulatus Cucumber Cucumber, Star (see Cucumber, Bur/ Star Cucumber) Cucumber, Wild/ Balsam Apple Echinocystis lobata Cucumber Currycomb bracket Daedaleopsis confragosa Fungus Cyperus, shining Cyperus rivularis Sedge

Caper Spider-Flower Cleome spinosa Carpetweed Carpetweed/ Indian Chickweed/ Devil's Grip Mollugo verticellata Cashew (Sumac) Poison Ivy Rhus radicans Cashew (Sumac) Sumac, Smooth Rhus glabra Cashew (Sumac) Sumac, Staghorn Rhus typhina Cattail Cattail, Common Typha latifolia Cattail Cattail, Narrow-leaved Typha angustifolia Clubmoss Clubmoss, Fan Diphasiastrum digitatum Clubmoss Clubmoss, Shining Huperzia lucidula Clubmoss Clubmoss, Staghorn Lycopodium clavatum Composite Aster, bushy Aster dumosus Composite Aster, Large-leaved Aster macrophyllus Composite Aster, Whorled Wood Aster acuminatus Composite Boneset, White Composite Brown-eyed Susan Rudbeckia triloba Composite Chamomile, stinking Composite Clotbur Xanthium italicum Composite Clotbur, Common Xanthium chinense Composite Cocklebur Xanthium chinense Composite Coneflower, purple Echinacea purpurea Composite Coneflower, thin-leaved Composite Coreopsis, Lance-leaved Coreopsis lanceolata Composite Daisy, Shasta Leucanthemum superbum Composite Dog fennel Composite Elecampane Inula helenium Composite Feverfew Chrysanthemum parthenium Composite Feverfew, American Composite Goldenrod, hard leaved Composite Goldenrod, stiff Solidago rigida Composite Hawkweed, Panicled Hieracium paniculatum Composite Joe Pye weed, spotted Eupatorium maculatum Composite Lettuce, Garden Lactuca sativa Composite Mayweed Anthema cotula Composite Quinine, wild Parthenium integrifolium Composite Thoroughwort, White Eupatorium album Cucumber Cucumber, Bur/ Star Cucumber Sicyos angulatus Cucumber Cucumber, Wild/ Balsam Apple Echinocystis lobata Custard-apple Pawpaw Asimina triloba Cypress Cedar, Northern White Thuja occidentalis