Altitudinal distribution: subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a calcicolous species resembling P. forana, but the granulose thallus whitish to brownish-grey with a rose tinge, ascospores larger (25-33 × 12-14 µm), mostly clavate and 3-septate (occasionally with one longitudinal septum), and ascomata with a basally dark exciple and open involucrellum; widespread in Central Europe from the lowlands to the subalpine belt, but rarely collected, with a single record from the Eastern Alps (Austria).
