Acarospora intermedia is a wide-spread species in Europe extending through eastern Europe to Asia (Siberia), occurring in full sun on sandstone, granite, basalt, and Ca-enriched siliceous rock at elevations usually below 500 m. It was recently reported new for the Czech Republic from several localities in Bohemia and Moravia (Knudsen & Kocourková 2020).
It has small brown areoles, usually less than 1 mm wide, with solitary apothecia usually 0.2–0.5 mm wide in an elevated thalline margin, the subtending areoles sometimes a different brown color from the thalline margin. The thallus is usually contiguous. It differs from A. veronensis especially in having elevated apothecia and is indistinguishable when immature apothecia are immersed.
Literature: Knudsen K. & Kocourková J. (2020): Acarosporaceae of Belarus. – Herzogia 33: 394–406.
taxonomic classification:Ascomycota → Lecanoromycetes → Acarosporales → Acarosporaceae → Acarospora
Red List (Malíček 2023):DD – data deficient
Occurrence in the Czech Republic
All records: 13, confirmed 10. One click on a selected square displays particular record(s), including their source(s).