Image of calcareous rimmed lichen

Description:

Slo.: ? - Habitat: grassland of a former pasture in the midst of mixed forest, predominantly Fagus sylvatica, fully exposed to rain, not much sun, but an open place, nearly horizontal position, precipitations ~3.000 mm/year, average temperature 8-10 deg C, elevation 460 m (1.500 feet), alpine phytogeographical region. Substratum: small half buried hard limestone boulder in grassland