| Castilleja indivisa Entireleaf indian paintbrush View 73 images |  |
| Callirhoe involucrata Winecup View 38 images |  |
| Callirhoe pedata Finger poppy-mallow View 14 images |  |
| Campsis radicans Trumpet creeper View 40 images |  |
| Catalpa speciosa Northern catalpa View 6 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 |  |
| Chamaecrista fasciculata var. fasciculata Partridge pea View 22 images |  |
| Chilopsis linearis Desert willow View 30 images |  |
