Trapeliopsis granulosa (Hoffm.) Lumbsch

A cosmopolitan species, one of the most common, primarily terricolous pioneer lichens in the Czech Republic. It occurs from lowlands to high mountains. It is among the dominant acidophilic lichen species at open stands of early successional stages, poor in minerals, such as heaths, arctic-alpine tundra, open rock outcrops, forest clearings and glades, peatland margins etc. Most commonly it grows on crude, slowly decaying humus, plant debris, bryophytes and mineral soil, but also on slowly decaying wood and tree bark with low pH. Specimens on bark and wood are difficult to distinguish from similar, primarily epixylic T. flexuosa, especially when sterile.

Ascomycota → Lecanoromycetes → Trapeliales → Trapeliaceae → Trapeliopsis