Physcia stellaris (L.) Nyl.

Physcia stellaris is an epiphyte associated with deciduous trees, typically with higher bark pH. It is heliophilic, usually found on branches. It tolerates eutrophication and often co-occurs with nitrophilous lichen species. In Europe and in the Czech Republic, it is a common species, distributed from lowlands to mountains. The rarer similar species, P. aipolia, differs in white spots on the thallus surface and K+ yellow medulla.

Ascomycota → Lecanoromycetes → Caliciales → Physciaceae → Physcia