| Chrysolepis chrysophylla |
Golden Chinquapin |
No |
| Chrysolepis chrysophylla var. minor |
Golden Chinquapin |
Yes |
| Cirsium occidentale var californicum |
California thistle |
No |
| Cirsium occidentale var venustum |
Venus thistle |
No |
| Clarkia concinna |
Red ribbons |
No |
| Clarkia rhomboidea |
Diamond clarkia |
No |
| Clarkia unguiculata |
Mountain garland |
No |
| Clematis lasiantha |
Chaparral clematis |
Yes |
| Clematis ligusticifolia |
Virgin's Bower |
Yes |
| Clinopodium chandleri |
San Miguel Savory |
Yes |
| Clinopodium douglasii |
Yerba buena |
Yes |
| Clinopodium mimuloides |
Monkey Flower Savory |
No |
| Clintonia andrewsiana |
Blue bead lily |
No |
| Cneoridium dumosum |
Bush Rue |
No |
| Collinsia heterophylla |
Purple chinese houses |
No |
| Collomia grandiflora |
Grand Collomia |
No |
| Comarostaphylis diversifolia |
Summer holly |
Yes |
| Condea emoryi |
Desert lavender |
Yes |
| Condea emoryi Cloud Burst |
Desert Lavender Cloud Burst |
No |
| Condea emoryi Silver Lining |
Desert Lavender Silver Lining |
Yes |
| Constancea nevinii |
Nevin's woolly sunflower |
Yes |
| Corethrogyne filaginifolia |
Sand Aster |
Yes |
| Corethrogyne filaginifolia ‘Silver Carpet’ |
Sand aster 'Silver Carpet' |
Yes |
| Cornus glabrata |
Brown Dogwood |
Yes |
| Cornus nuttallii |
Mountain Dogwood |
Yes |
| Cornus sericea |
Creek Dogwood |
Yes |
| Cornus sericea Peter’s Choice |
'Peter's Choice' Creek Dogwood |
No |
| Cornus sericea ssp. sericea |
Creek Dogwood |
Yes |
| Corylus cornuta |
California hazlenut |
Yes |
| Crataegus douglasii |
Black Hawthorn |
Yes |
| Crocanthemum scoparium |
Common sun rose |
No |
| Crossosoma californicum |
Catalina crossosoma |
Yes |
| Cucurbita foetidissima |
Buffalo Gourd |
Yes |
| Cylindropuntia bernardina |
Cane Cholla |
Yes |
| Cylindropuntia bigelovii |
Teddybear Cholla |
Yes |
| Cylindropuntia californica var. californica |
California Cholla |
Yes |
| Cylindropuntia echinocarpa |
Silver Cholla |
No |
| Cynoglossum grande |
Houndstongue |
Yes |
| Danthonia californica |
California Oatgrass |
Yes |
| Darmera peltata |
Indian rhubarb - dwarf form |
No |
| Datura wrightii |
Sacred Datura |
Yes |
| Delphinium cardinale |
Scarlet Larkspur |
No |
| Delphinium gypsophilum |
Gypsum Loving Larkspur |
No |
| Delphinium hesperium ssp. hesperium |
Western Larkspur |
No |
| Delphinium nudicaule |
Red larkspur |
No |
| Delphinium trolliifolium |
Columbian Larkspur |
Yes |
| Delphinium variegatum |
Royal larkspur |
No |
| Dendromecon harfordii |
Island Bush Poppy |
No |
| Dendromecon rigida |
Bush Poppy |
No |
| Deschampsia cespitosa ssp. cespitosa |
Tufted Hairgrass |
No |