| Chamaecyparis thyoides Atlantic white cedar View 4 images |  |
| Claytonia caroliniana var. caroliniana Carolina springbeauty View 0 images | |
| Clematis occidentalis var. occidentalis Purple clematis View 3 images |  |
| Claytonia virginica Virginia springbeauty View 21 images |  |
| Clematis virginiana Devil's darning needles View 7 images |  |
| Cornus alternifolia Alternateleaf dogwood View 3 images |  |
| Corylus americana American hazelnut View 15 images |  |
| Conoclinium coelestinum Blue mistflower View 25 images |  |
| Coreopsis lanceolata Lanceleaf coreopsis View 32 images |  |
| Desmodium canadense Showy tick trefoil View 5 images |  |
