| Name | Hieracium nigrocollinum S. Watson | 
| Authorship | S. Watson | 
| Rank | Species | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Hieracium Linnaeus | 
| GUID | urn:lsid:ipni.org:names:122381-2 | 
| Citation | 1890 Proc. Amer. Acad. Arts 25: 133 | 
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Hieracium nigrocollinum S. Watson | 
| Identification made in | [no date] (1), 1965 (1) |