| Name | Hygrohypnum eugyrium var. occidentale (Cardot & Thériot) Grout |
| Authorship | (Cardot & Thériot) Grout |
| Rank | Variety |
| Placed in | Hygrohypnum eugyrium (Schimper) Loeske |
| Citation | 1929 Check List Pleuroc. Mosses N. Amer. 16 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Hygrohypnum eugyrium var. occidentale (Cardot & Thériot) Grout |
| Identification made in | [no date] (1) |