Syn.: Parmelia sorediata (Ach.) Th. Fr., P. sorediosa Almb., P. disjuncta auct. belg. p.p., non Erichsen

On siliceous rocks, in open conditions, in natural and artificial (slate rubbles in disused quarries) conditions.

Belgium: Ard.: RR.

Luxembourg: Ard.: RRR.

France: - .

Lit.: L8: 47-48.