| Name | Amblystegium riparium var. flaccidum (Lesquereux & James) Renauld & Cardot |
| Authorship | (Lesquereux & James) Renauld & Cardot |
| Rank | Variety |
| Placed in | Amblystegium riparium (Hedwig) Schimper |
| Citation | 1893 Rev. Bryol. 20: 24 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Amblystegium riparium var. flaccidum (Lesquereux & James) Renauld & Cardot |
| Identification made in | [no date] (1) |