| Crossosomataceae | |
Crossosoma bigelovii
| S. Watson | Proc. Amer. Acad. Arts 11: 122 | 1876 |
| Crossosomataceae | |
Crossosoma californicum
| Nutt. | J. Acad. Nat. Sci. Philadelphia, ser. 2 4(1): 8 | 1848 |
| Crossosomataceae | |
Crossosoma glaucum
| Small | N. Amer. Fl. 22(3): 232 | 1908 |
| Crossosomataceae | |
Crossosoma parviflora
| B.L. Rob. & Fernald | Proc. Amer. Acad. Arts 30: 114 | 1895 |
| Crossosomataceae | |
Crossosoma parviflorum
| B.L. Rob. & Fernald | Proc. Amer. Acad. Arts 30: 114 | 1894 |