Acarospora nodulosa (Dufour) Hue var. nodulosa
Syn.: Lecanora nodulosa (Dufour) Colmeiro, Parmelia nodulosa Dufour, Urceolaria nodulosa (Dufour) Schaer.
Lichenised.
Substrate: calciferous soil
Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: a xeric subtropical species, parasitic on Diploschistes spp., found on weathered gypsum and calcareous substrata in very open habitats.
Switzerland: Valais;