Myriolecis sambuci (Pers.) Clem.

An epiphytic lichen that shows a preference for nutrient-rich, higher-pH bark typically of elder, ash and aspen trees, especially their branches or young individuals. In limestone areas, it may grow also at bases of trees with rather acidic bark (e.g. oaks). It is a light-loving species that can be found both in open landscape and in forests (here primarily in the tree canopy). According to current knowledge, the lichen is very sensitive to substrate acidification and intensive eutrophication. It is widely distributed in the temperate zone of the Northern Hemisphere. Myriolecis sambuci is scattered in Europe, as well as in the Czech Republic. Currently, most data come from southern Bohemia (mainly from the Šumava Mts and its surroundings), and the species is extremely rare in the northern part of the country.

Ascomycota → Lecanoromycetes → Lecanorales → Lecanoraceae → Myriolecis