Nordic J. Bot. 2, 3: 291 (1982).

Basionym: Parmelia rudecta Ach., Syn. Meth. Lich. (Lund): 197 (1814).

Chemistry:
Race I: ...
Race II: Punctelia eganii, which is morphologically identical with Punctelia rudecta but contains lichexanthon in the pseudocyphellae, may be regarded as a chemical race of Punctelia rudecta (Hodkinson & Lendemer 2011).