| Name | Hypnum cariosum J. D. Roy |
| Authorship | J. D. Roy |
| Rank | Species |
| Placed in | Hypnum Hedwig |
| Citation | 1878 Bot. Gaz. 3: 32 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Hypnum cariosum J. D. Roy |
| Identification made in | [no date] (2) |
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