| Name | Lecanora subfusca f. sylvestris Nylander |
| Authorship | Nylander |
| Rank | Forma |
| Placed in | Lecanora subfusca (Linnaeus) Acharius |
| Citation | 1868 Bot. Zeitung (Berlin) 26: 892 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Lecanora subfusca f. sylvestris Nylander |
| Identification made in | [no date] (1) |