Sporodictyon cruentum (Körb.) Körb.

Syn.: Polyblastia cruenta (Körb.) P. James & Swinscow, Polyblastia henscheliana (Körb.) Lönnr., Segestrella cruenta Körb., Sphaeromphale henscheliana Körb., Sporodyction henschelianum (Körb.) Körb., Verrucaria subumbrina Nyl.
Lichenised.
Substrate:
Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) to the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)
Note: a silicicolous species, periodically submerged in montane to Alpine creeks; rarely collected and perhaps more widespread in the Alps.
Austria: Vorarlberg; Tirol; Salzburg; Steiermark; Switzerland: Bern; Graubünden; Uri; Valais; France: Savoie; Italy: Trentino Alto Adige; Lombardia; Slovenia: Alpine and Pre-Alpine Slovenia;