| Name | Physcomitrium pyriforme var. serratum (Renauld & Cardot) H. A. Crum & L. E. Anderson | 
| Authorship | (Renauld & Cardot) H. A. Crum & L. E. Anderson | 
| Rank | Variety | 
| Placed in | Physcomitrium pyriforme (Hedwig) Hampe | 
| Citation | 1955 Bryologist 58: 6 | 
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Physcomitrium pyriforme var. serratum (Renauld & Cardot) H. A. Crum & L. E. Anderson | 
| Identification made in | [no date] (10) | 
