Basionym: Lichen tenellus Scop., Fl. Carniol. ed. 2, 2: 394 (1772).
Synonyms: Index Fungorum
Type(cons.): Czech Republic, Moravia, Mor. Herálec, 1942, Nádvorník, Physc. Exs. 8 (UPS).
Chemistry: Upper cortex K+ yellow. Atranorin. (Moberg 2002: 38).
Ecology: Corticolous or saxicolous, on branches and trunks of various deciduous trees; rocks and wooden structures on the seashore. (Moberg 2002: 38).
Molecular data:
Distribution: Europe and North America, nach Discover Life aber auch in Afrika, Asien und Südamerika. Database
Taxonomy: Moberg (2002: 38) does not accept the infraspecific taxon "marina": "Specimens growing in maritime habitats have been separated as var. marina, but I regard this material as a habitat-induced modification. Presently the German checklist (Wirth et al. 2011) contains a subspecies "marina".