| Name | Atrichum altercristatum (Renauld & Cardot) Ireland |
| Authorship | (Renauld & Cardot) Ireland bis |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Atrichum |
| Holdings | 52 Specimens held in the Harvard University Herbaria identified as Atrichum altercristatum (Renauld & Cardot) Ireland |
| Identification made in | [no date] (49), 2006 (2), 2018 (1) |