| Callirhoe involucrata Winecup View 38 images |  |
| Centaurea americana American star-thistle View 58 images |  |
| Cercis canadensis var. mexicana Mexican redbud View 9 images |  |
| Cercis canadensis var. texensis Texas redbud View 24 images |  |
| Ceanothus fendleri Fendler ceanothus View 0 images | |
| Ceanothus greggii Desert ceanothus View 1 images |  |
| Celtis laevigata var. reticulata Netleaf hackberry View 11 images |  |
| Cercocarpus montanus Alderleaf mountain mahogany View 8 images |  |
| Chilopsis linearis Desert willow View 30 images |  |
| Chrysactinia mexicana Damianita View 39 images |  |
