| Name | Campylopus underwoodii R. S. Williams | 
| Authorship | R. S. Williams | 
| Rank | Species | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Campylopus Bridel | 
| Citation | 1913 N. Amer. Fl. 15: 142 | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Campylopus underwoodii R. S. Williams | 
| Identification made in | 1980 (1) |