On sandstone and siliceous rocks in dry underhangs, also on Fagus and Quercus in well-preserved forests.

Belgium: Mosan: RR, Ard.: RR.

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

France: - .

Although originally described as a lichenicolous fungus on an unidentified host, it is now generally considered to be a lichenized hyphomycete.

Lit.: Diederich & Scheidegger (1996), Ertz & Duvivier (2006: 53), Kuborn & Diederich (2008).