| Name | Oligotrichum laevigatum var. cavifolium (Wilson) Frye |
| Authorship | (Wilson) Frye |
| Rank | Variety |
| Placed in | Oligotrichum laevigatum (Wahlenberg) Bruch & Schimper |
| Citation | 1937 Moss Fl. N. Amer. 1: 110. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Oligotrichum laevigatum var. cavifolium (Wilson) Frye |
| Identification made in | [no date] (1) |
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