Terricolous on acidic soil, over natural, siliceous and sandstone outcrops, also on rotting trees and stumps, frequent in disused quarries.

Belgium: Camp: RR, Brab.: RR, Mosan: RR, Ard.: R.

Luxembourg: Ard.: R, Lorr.: AR.

France: Mar.: RRR, Ard.: RRR.

Lit.: La69: 141, Mü1: 148, NL84: 13, NL87: 21, NL92: 169, Schl: 214, Diederich (1985b: 30).