| Name | Nanomitrium austinii var. floridanum Grout |
| Authorship | Grout |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Nanomitrium austinii (Sullivant) Lindberg |
| Citation | 1935 Moss Fl. N. Amer. 2: 71 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Nanomitrium austinii var. floridanum Grout |
| Identification made in | [no date] (1) |