| Castilleja exserta ssp. exserta Purple owl's clover View 6 images |  |
| Castilleja linariifolia Wyoming indian paintbrush View 15 images |  |
| Calycanthus occidentalis Western sweetshrub View 1 images |  |
| Cercis canadensis var. texensis Texas redbud View 24 images |  |
| Ceanothus cordulatus Mountain whitethorn View 0 images | |
| Ceanothus cuneatus Buckbrush View 0 images | |
| Ceanothus impressus Santa barbara ceanothus View 1 images |  |
| Ceanothus integerrimus Deerbrush View 3 images |  |
| Ceanothus leucodermis Chaparral whitethorn View 3 images |  |
| Cercocarpus ledifolius Curl-leaf mountain mahogany View 0 images |
