Corticolous, mainly on young trunks of Alnus, Fraxinus, Malus and Salix, in sheltered and humid conditions.

Belgium: Camp.: RRR, Brab.: RRR, Mosan: R, Ard.: R, Lorr.: R.

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

France: Lorr.: RR.

Lit.: Di: 110-111, L5: 21, NL84: 14, NL92: 170.