| Name | Bacidia naegelii f. vacillans (Nylander) Zahlbruckner |
| Authorship | (Nylander) Zahlbruckner |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Bacidia naegelii (Hepp) Zahlbruckner |
| Citation | 1926 ["1927"] Cat. Lich. Univ. 4: 128 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Bacidia naegelii f. vacillans (Nylander) Zahlbruckner |
| Identification made in | [no date] (1) |