| Name | Sclerotium clavus f. alopecuri-geniculati P. Karsten |
| Authorship | P. Karsten |
| Rank | Forma |
| NomenclaturalStatus | NomInvalid |
| Placed in | Sclerotium clavus de Candolle: Fries |
| Citation | 1866 Fungi Fenniae Exsicc. 6: 577 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sclerotium clavus f. alopecuri-geniculati P. Karsten |
| Identification made in | [no date] (1) |