Placopyrenium trachyticum (Hazsl.) Breuss var. subtrachyticum (B. de Lesd.) Breuss
Syn.: Catapyrenium subtrachyticum B. de Lesd., Dermatocarpon subtrachyticum (B. de Lesd.) Zahlbr., Dermatocarpon trachyticum (Hazsl.) Vain. var subtrachyticum (B. de Lesd.) Servít, Placidiopsis subtrachytica (B. de Lesd.) Zschacke
Lichenised.
Substrate:
Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: a variety differing from typical P. trachyticum in the presence of intermixed 1-septate ascospores; on various types of rocks; rare throughout Europe at low elevations, with a few records from the Western Alps (France).
