Psilolechia clavulifera (Nyl.) Coppins

A minute lichen with greenish finely leprose thallus, which resembles free-living algae, with dark apothecia. It is a strict niche specialist; it tolerates high level of shading and requires places hidden from rainfall. The species typically occurs on roots of wind-blown trees (especially spruces), often covered with fine soil particles. It may also grow on overhanging siliceous rocks, stones, tree stumps and rarely also on tree bases. Psilolechia clavulifera is sparsely recorded in central Europe, but quite common at middle to higher elevations in the Czech Republic. It can be found in various forest types, from managed to old-growth forests. It is a relatively common, but rather overlooked species.

Ascomycota → Lecanoromycetes → Lecanorales → Psilolechiaceae → Psilolechia