Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a relatively rare form of C. vitellina (with moderately polyspored asci), characterised by a granulose, yellow-green thallus, whose unusual colour is due to the total or partial lack of calycin; on various substrates, including rocks (type on sandstone) and eutrophicated wood; here and there throughout Europe at low elevations, with a few records from the Eastern Alps (Austria).
