| Name | Physcomitrella californica H. A. Crum & L. E. Anderson |
| Authorship | H. A. Crum & L. E. Anderson |
| Rank | Species |
| Placed in | Physcomitrella |
| Citation | 1955 Bryologist 58: 4. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Physcomitrella californica H. A. Crum & L. E. Anderson |
| Identification made in | [no date] (1) |