Buellia tesserata Körb.
Syn.: Buellia cerussata Llimona & Werner
Lichenised.
Substrate: siliceous rocks
Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: this species, based on a type from Norway, is very similar B. fimbriata but has a different chemistry (barbatic acid); it grows on siliceous rocks and is apparently rare.
