Syn.: Parmelia physodes (L.) Ach.

Corticolous on all kinds of trees, especially well-developed on acidified bark, incl. on Picea, also terricolous or saxicolous.

Belgium: Mar.: AC, Fl.: AC, Camp.: AR, Brab.: C, Mosan, Ard., Lorr.: CC.

Luxembourg: Ard.: CC, Lorr.: CC.

France: Mar.: R, Boul.: R, Pic.: R, Mosan, Ard., Lor.: CC.

Lit.: Boul.: 69, Ca: 130-131, Ho: 135, La66: 382-387, Qu: 94, 97-98, WS: 35, 71.