| Name | Rhynchostoma exasperans P. Karsten | 
| Authorship | P. Karsten | 
| Rank | Species | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Rhynchostoma | 
| Citation | 1870 Fungi Fenniae Exsicc. 10: 967 | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Rhynchostoma exasperans P. Karsten | 
| Identification made in | [no date] (1) | 
