Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: a rare species with a thick, brownish-grey thallus forming small isles of about 2-4 mm in diam. on the host lichen, with ellipsoid ascospores (to c. 15 µm long); a lichenicolous lichen on Caloplaca lactea on calcareous pebbles; widespread in SW Europe, including the Western Alps (France).
