Syn.: Lecidea albocaerulescens auct., non (Wulfen) Ach.

On siliceous rocks in sheltered conditions by a river (for the only recent specimen).

Belgium: Ard.: RR (1963).

Luxembourg: - .

France: Ard.: RRR (<1900).

Lit.: L8: 70, Hertel & Knoph (1984: 480), Knoph & Schrüfer (1993: 2-4).