Crossosoma is a genus of the plant family Crossosomataceae. It consists of two species of shrubs.
| Crossosoma | |
|---|---|
 | |
| Crossosoma californicum | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Crossosomatales |
| Family: | Crossosomataceae |
| Genus: | Crossosoma Nutt. |
| Species | |
Crossosoma californicum Nutt. is found on the Palos Verdes Peninsula and San Clemente and Santa Catalina islands of California, as well as Guadalupe Island in Baja California.
Crossosoma bigelovii S.Wats. occurs in the deserts of California, Nevada, Arizona, and Baja California.