Mycoporellum sacromontanum (Strasser) Redinger

Syn.: Arthonia sacromontana Strasser
Non- or doubtfully lichenised.
Substrate: siliceous rocks
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 doubtfully lichenised species whose generic placement is in need of evaluation, with perithecioid ascomata arranged in dense groups (stromatic?), narrowly cylindrical, fissitunicate asci, and 1-septate ascospores with an attenuated lower cell; on sandstone and other types of siliceous rocks; a rare species, only known from low elevations in Central and Western Europe, with a single record from the Eastern Alps (Austria).
Austria: Niederösterreich (incl. Wien);