Naetrocymbe fraxini (A. Massal.) R.C. Harris

Syn.: Arthopyrenia fraxini A. Massal., Pyrenula fraxini (A. Massal.) Trevis.
Non- or doubtfully lichenised.
Substrate: bark
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a mild-temperate species found on smooth bark of (mostly) deciduous trees.
Austria: Kärnten; Steiermark; Italy: Veneto; Trentino Alto Adige; Lombardia; Piemonte; Slovenia: Alpine and Pre-Alpine Slovenia;