| Name | Valsa prunastri var. betulae (Sommerfelt) P. Karsten |
| Authorship | (Sommerfelt) P. Karsten |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Valsa prunastri (Persoon: Fries) Fries |
| Citation | 1870 Fungi Fenniae Exsicc. 10: 937 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Valsa prunastri var. betulae (Sommerfelt) P. Karsten |
| Identification made in | [no date] (1) |
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