Thallus grey to brown, growing on blue-black prothallus, associated with the cyanobacterium Nostoc. Apothecia red-brown to dark brown, common. Mainly on basic silicates. In the Czech Republic predominantly on serpentinites. In Europe widely distributed, but only locally common. The species prefers colder and wetter areas. It occurs mainly in northern Europe and mountain areas. Rare in the Czech Republic. Recently found in most areas with ultrabasic rocks, but also on enriched gneiss rocks in the Šumava foothill, calcareous phyllites in Velká kotlina corrie in the Hrubý Jeseník Mts and on calcareous sandstone near Vsetín. Czech populations probably decreased within the last 100 years.
taxonomic classification:Ascomycota → Lecanoromycetes → Peltigerales → Vahliellaceae → Vahliella
most frequented synonyms:Fuscopannaria leucophaeaRed List (Liška & Palice 2010):VU – vulnerable
Red List (Malíček 2023):C3 – endangered
Occurrence in the Czech Republic
All records: 40, confirmed 34. One click on a selected square displays particular record(s), including their source(s).