Syn.: C. cetrarioides (Duby) W. L. Culb. & C. F. Culb., Parmelia cetrarioides (Duby) Nyl.

Corticolous, mainly on Fagus in well-preserved and humid forests, or saxicolous on sandstone rocks.

Belgium: Mosan: RRR, Ard.: AR, Lorr.: AR.

Luxembourg: Ard.: RRR (1985), Lorr.: RR (2005).

France: Lorr.: RRR (2004).

Two chemotypes have been detected in the study area: one containing imbricaric acid, which corresponds to C. cetrarioides, and one with olivetoric acid, which corresponds to C. olivetorum s.s.

Lit.: L4: 19, Diederich (1985a: 22), Diederich (1986a: 118), Diederich et al. (2006).