Polyblastia leptospora Zschacke

Lichenised.
Substrate: calciferous rocks
Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a species with a thin, greenish-white thallus with gloeohyphae, ascomata immersed in pits, with a pigmented wall lacking an involucrellum, and narrowly ellipsoid ascospores with 5-7 transversal septa and 1 incomplete longitudinal septum; on calcareous rocks in Eastern and Central Europe, with a few records from the Eastern Alps (Austria).
Austria: Vorarlberg; Salzburg;