Combination search
Looking for commercially available native plant species suitable to your state or region, try the Recommended Species page.
| scientific name | common name(s) | image gallery |
| Conyza canadensis var. canadensis | Canadian Horseweed | |
| Conyza canadensis var. pusilla | Canadian Horseweed | |
| Conioselinum chinense | Chinese Hemlockparsley | |
| Conoclinium coelestinum | Blue Mistflower Wild Ageratum Blue Boneset | |
| Corylus cornuta | Beaked Hazelnut Beaked Filbert | |
| Corylus cornuta var. cornuta | Beaked Hazel Beaked Hazelnut | |
| Cornus drummondii | Roughleaf Dogwood Drummond's Dogwood Rough-leaf Dogwood | |
| Cornus florida | Flowering Dogwood Virginia Dogwood Florida Dogwood White Cornel Arrowwood American Boxwood False Box St. Peter's Crown Corona De San Pedro | |
| Corydalis flavula | Yellow Fumewort Yellow Harlequin | |
| Coreopsis grandiflora | Largeflower Tickseed Large-flower Tickseed Common Coreopsis | |
| Coreopsis grandiflora var. harveyana | Largeflower Tickseed | |
| Coreopsis lanceolata | Lanceleaf Coreopsis Lance-leaved Coreopsis Lanceleaf Tickseed Sand Coreopsis | |
| Collomia linearis | Tiny Trumpet Narrow-leaf Mountain-trumpet Collomia | |
| Corallorhiza maculata | Summer Coralroot Spotted Coralroot Speckled Coral Root Large Coral Root Many-flowered Coral Root | |
| Coreopsis major | Greater Tickseed Major Coreopsis | |
| Corallorhiza maculata var. maculata | Summer Coralroot | |
| Cornus obliqua | Silky Dogwood Pale Dogwood Swamp Dogwood Kinnikinnik | |
| Corallorhiza odontorhiza | Autumn Coralroot Late Coralroot Fall Coral Root Late Southern Coral Root Small Coral Root Small-flowered Coral Root Chicken Toe Turkey Claw Dragon's Claw Fever Root Crawley Root Crawley | |
| Corallorhiza odontorhiza var. odontorhiza | Autumn Coral Root Autumn Coralroot Fall Coral-root Small-flowered Coral-root | |
| Comarum palustre | Purple Cinquefoil Purple Marshlocks Marsh Cinquefoil | |
| Comptonia peregrina | Sweet-fern Sweetfern | |
| Conyza ramosissima | Dwarf Horseweed Dwarf Fleabane | |
| Cornus racemosa | Gray Dogwood | |
| Cornus rugosa | Roundleaf Dogwood | |
| Cornus sericea | Red Osier Dogwood Red Osier Red-twig Dogwood | |
| Corydalis sempervirens | Rock Harlequin | |
| Cornus sericea ssp. sericea | Redosier Dogwood Red Osier Dogwood | |
| Coreopsis tinctoria | Plains Coreopsis Golden Tickseed Goldenwave Calliopsis | |
| Coreopsis tinctoria var. tinctoria | Golden Tickseed Golden-wave | |
| Corallorhiza trifida | Yellow Coralroot Early Coralroot | |
| Coptis trifolia | Threeleaf Goldthread Three-leaf Goldthread Canker Root | |
| Coreopsis tripteris | Tall Tickseed Tall Coreopsis | |
| Comandra umbellata | Bastard Toadflax | |
| Comandra umbellata ssp. umbellata | Bastard Toadflax | |
| Collinsia verna | Spring Blue Eyed Mary Spring Blue-eyed Mary | |
| Collinsonia verticillata | Stoneroot | |
| Commelina virginica | Virginia Dayflower | |
| Corallorhiza wisteriana | Spring Coral-root Spring Coral Root Early Southern Coral-root Wister's Coral-root Yellow Coral-root Arousing Coral-root Spring Coralroot | |
| Crataegus ×anomala | Arnold Hawthorn | |
| Crataegus apiomorpha | Fort Sheridan Hawthorn | |
| Crataegus arborea | Montgomery Hawthorn | |
| Crataegus ater | Nashville Hawthorn | |
| Crataegus beata | Dunbar's Hawthorn | |
| Crataegus brainerdii | Brainerd's Hawthorn | |
| Crataegus calpodendron | Pear Hawthorn Late Hawthorn Pear Haw Pear Thorn | |
| Croton capitatus | Hogwort Texas Goatweed | |
| Cryptotaenia canadensis | Canadian Honewort Wild Chervil | |
| Croton capitatus var. capitatus | Hogwort Woolly Croton | |
| Crataegus chrysocarpa | Fireberry Hawthorn | |
| Crataegus chrysocarpa var. chrysocarpa | Fireberry Hawthorn Red Haw Red-fruited Hawthorn Scarlet Hawthorn | |
| Crataegus compacta | Clustered Hawthorn Thames Hawthorn | |
| Crataegus corusca | Shiningbranch Hawthorn Gleaming Hawthorn | |
| Crataegus coleae | Cole's Hawthorn | |
| Crataegus compta | Adorned Hawthorn | |
| Crataegus crus-galli | Cockspur Hawthorn Cockspur Thorn Newcastle Hawthorn Newcastle Thorn Hog Apple | |
| Crataegus dissona | Northern Hawthorn | |
| Crataegus disperma | Spreading Hawthorn | |
| Crataegus engelmannii | Engelmann's Hawthorn | |
| Crataegus flabellata | Fanleaf Hawthorn | |
| Croton glandulosus | Tooth-leaved Croton Sand Croton Tropic Croton Vente Conmigo | |
| Croton glandulosus var. septentrionalis | Vente Conmigo | |
| Crataegus holmesiana | Holmes' Hawthorn | |
| Crataegus ×hudsonica | Hawthorn | |
| Crataegus ×immanis | Hawthorn | |
| Crataegus indicens | Mansfield Hawthorn | |
| Crataegus intricata | Copenhagen Hawthorn Thicket Hawthorn White Hawthorn White Thorn Scarlet Hawthorn Scarlet Haw Scarlet-fruited Hawthorn Scarlet-fruited Haw | |
| Crataegus iracunda | Passionate Hawthorn Stolonbearing Hawthorn | |
| Crataegus irrasa | Blanchard's Hawthorn | |
| Crataegus jesupii | Jesup Hawthorn Jesup's Hawthorn | |
| Crataegus lucorum | Grove Hawthorn | |
| Crataegus macrosperma | Bigfruit Hawthorn Large-seeded Hawthorn | |
| Crataegus margarettiae | Margarett's Hawthorn | |
| Croton michauxii | Michaux's Croton | |
| Croton michauxii var. ellipticus | Michaux's Croton | |
| Crataegus mollis | Downy Hawthorn White Thorn Whitethorn Scarlet Hawthorn Scarlet Haw Red Haw Downy Thorn | |
| Croton monanthogynus | Prairie Tea One-seed Croton Doveweed Dove Weed Prairie Goatweed | |
| Crataegus nitida | Glossy Hawthorn | |
| Crataegus pedicellata | Scarlet Hawthorn | |
| Crataegus pennsylvanica | Pennsylvania Hawthorn Pennsylvania Thorn | |
| Crataegus persimilis | Plumleaf Hawthorn | |
| Crataegus phaenopyrum | Washington Hawthorn Washington-thorn | |
| Crataegus pringlei | Pringle's Hawthorn | |
| Crataegus pruinosa | Waxyfruit Hawthorn | |
| Crataegus prona | Illinois Hawthorn | |
| Crataegus punctata | Dotted Hawthorn White Thorn Dotted Haw | |
| Crotalaria sagittalis | Arrowhead Rattlebox | |
| Crataegus schuettei | Royal Hawthorn Schuette's Hawthorn | |
| Crataegus scabrida | Rough Hawthorn | |
| Crataegus submollis | Quebec Hawthorn | |
| Crataegus suborbiculata | Caughuawaga Hawthorn | |
| Crataegus succulenta | Fleshy Hawthorn | |
| Crataegus tanuphylla | Keystone Hawthorn | |
| Crataegus uniflora | Dwarf Hawthorn One-flowered Hawthorn | |
| Cuscuta cephalanthi | Buttonbush Dodder Button-bush Dodder | |
| Cuscuta compacta | Compact Dodder | |
| Cuscuta coryli | Hazel Dodder | |
| Cuscuta compacta var. compacta | Compact Dodder | |
| Cucurbita foetidissima | Stinking Gourd Buffalo Gourd Missouri Gourd Stink Gourd Wild Gourd | |
| Cuscuta glomerata | Rope Dodder | |
| Cuscuta gronovii | Scaldweed Dodder | |
| scientific name | common name(s) | image gallery |
