| Name | Hygroamblystegium tenax var. spinifolium (Schimper) Jennings |
| Authorship | (Schimper) Jennings |
| Rank | Variety |
| Placed in | Hygroamblystegium tenax (Hedwig) Jennings |
| Citation | 1913 Man. Mosses W. Pennsylvania 278 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Hygroamblystegium tenax var. spinifolium (Schimper) Jennings |
| Identification made in | [no date] (6), 2004 (1), 2016 (1) |