Corticolous on acid bark, usually along streams or in sheltered forests.

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

Luxembourg: Ard.: RRR, Lorr.: RR.

France: - .

Lit.: Di: 222-223, L3: 33-34, NL84: 18, NL97: 56, Ertz & Duvivier (2006: 53).