Substrate: acidic soil (mostly on siliceous substrata)
Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: this name is used for a lichen differing from typical Th. epigaeum in the hyaline ascomatal wall (except the blackish ostiolar region), and perhaps designates only a morphotype; on acidic soil, mainly in Western Europe, including the limit of the Southern Pre-Alps (France).
