| Name | Atrichum undulatum var. minus (Hedwig) Paris |
| Authorship | (Hedwig) Paris |
| Rank | Variety |
| Placed in | Atrichum undulatum (Hedwig) P. Beauvois |
| Citation | 1903 Index Bryol. Suppl. 1: 72 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Atrichum undulatum var. minus (Hedwig) Paris |
| Identification made in | [no date] (3) |