| Name | Pilosium serrulatum R. S. Williams |
| Authorship | R. S. Williams |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Pilosium |
| Citation | 1930 J. Wash. Acad. Sci. 20(10): 178. B. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Pilosium serrulatum R. S. Williams |
| Identification made in | [no date] (1) |