Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a foliicolous species with very small thalli, minute, dark brownish-red perithecia (the colour of the involucrellum), and fusiform to oblong, 3-septate ascospores which are up to c. 20 µm long; widespread in the tropics, with only a few extratropical records including Western Europe, and there usually on Buxus sempervirens, with a single record from the Western Alps (France).
