Lich. Scand. (Helsinki): 178 (1861). Basionym: Parmelia subfusca var. bryontha Ach. [as 'bryonta'], Methodus, Sectio prior (Stockholmiæ): 167 (1803).
Basionym: Parmelia subfusca var. bryontha Ach. [as 'bryonta'], Methodus, Sectio prior (Stockholmiæ): 167 (1803).