Image of punctelia

Description:

Habitat: Wood-side of hardwood forest, next to a dirt road and a farmhouse, cretaceous clastic rock (flysh), S oriented, fairly light and sunny place, protected from direct rain by tree canopy, precipitations ~3.000 mm/year, average temperature 8-10 deg C, elevation 530 m (1.700 feet), alpine phytogeographical region. Substratum: deciduous tree bark at the tree base.