A species rare in the Czech Republic. The recent findings come from the Šumava Mts. In the past, it occurred also in the Jizerské hory and Hrubý Jeseník Mts. It grows on trees, mainly spruces, and on rocks in mountain moist forests. It has a wide range, occurring in Europe, Africa, Asia, in Hawaii and Northern America. By appearance and secondary metabolites, it is very similar to the taxon B. capillaris, which is, however, currently classified as the species B. fuscescens. It differs by the so-called spinules and by the (light) grey thallus colour.taxonomic classification:
All records: 9, confirmed 3. One click on a selected square displays particular record(s), including their source(s).