| Name | Brachythecium petrophilum R. S. Williams |
| Authorship | R. S. Williams |
| Rank | Species |
| Placed in | Brachythecium |
| Citation | 1901 Bull. New York Bot. Gard. 2(6): 136. pl. 23. |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Brachythecium petrophilum R. S. Williams |
| Identification made in | [no date] (2) |
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