| Name | Thuidium microphyllum f. papillosum Grout |
| Authorship | Grout |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Thuidium microphyllum (Hedwig) A. Jaeger |
| Citation | 1932 Moss Fl. N. Amer. 3: 177 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Thuidium microphyllum f. papillosum Grout |
| Identification made in | [no date] (1) |
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