Bryologist 76, 2: 267 (1973).

Basionym: Pertusaria pocillaria Cumm. in Cardot et al., Harriman Alaska Expedition 5: 101 (1904).

Type locality: USA, Alaska, Farragut Bay, 5 June 1899, on Alnus; Trelease 806a (MO - holotype).

Chemistry by TLC: stictic acid, constictic acid, unknown)(Brodo 1973: 267).