Syn.: P. wulfenii DC.

Corticolous, mainly in forests on old trees of Fagus and Quercus, rarely on Acer.

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

Luxembourg: Ard.: RR, Lorr.: AR.

France: Boul.: AR, Pic.: R, Lorr.: RR.

Lit.: Boul.: 71, Di: 189-190, NL97: 53, Ertz & Duvivier (2006: 52).