| Name | Phaeocalicium minutissimum (G. Merrill) S. B. Selva |
| Authorship | (G. Merrill) Selva |
| Rank | Species |
| Placed in | Phaeocalicium A. F. W. Schmidt |
| Citation | 1999 Bryologist 102(3): 390 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Phaeocalicium minutissimum (G. Merrill) S. B. Selva |
| Identification made in | [no date] (1) |