| Name | Hypnum serpens var. compactum Drummond |
| Authorship | Drummond |
| Rank | Variety |
| NomenclaturalStatus | NomInvalid |
| Placed in | Hypnum serpens Hedwig |
| Citation | 1828 Musci Amer. no. 188 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Hypnum serpens var. compactum Drummond |
| Identification made in | [no date] (1) |
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