| Name | Hygroamblystegium crassicostatum E. B. Bartram |
| Authorship | E. B. Bartram |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Hygroamblystegium |
| Citation | 1942 Rev. Bryol. 13: 133 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Hygroamblystegium crassicostatum E. B. Bartram |
| Identification made in | [no date] (2), 2023 (2) |