Ottawa Nat. 27: 118 (1913).
Protologue type data: Bark of willows. Sidney, Vancouver Island; Prof. J. Macoun.
Type locality: Canada, British Columbia, Vancouver Island, Sidney, on bark of willows, J. Macoun (FH 00377521 - holotype).
Distribution Database: Distributions
Distribution Database: Discover Life
Picture Database: Tropical Lichens
Molecular Database: Genbank
Synonym Database: Index Fungorum
Synonym Database: Mycobank