| Name | Ephemerum serratum var. angustifolium (Bruch & Schimper) Bruch & Schimper |
| Authorship | (Bruch & Schimper) Bruch & Schimper |
| Rank | Variety |
| Placed in | Ephemerum serratum (Schreber ex Hedwig) Hampe |
| Citation | 1849 Bryol. Eur. 1: 9 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Ephemerum serratum var. angustifolium (Bruch & Schimper) Bruch & Schimper |
| Identification made in | [no date] (5) |