LICHALP

Verrucaria selecta Servít

Lichenised. Poorly known taxon.

Substrate: calciferous rocks

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 V. caerulea, with a thin, spreading, whitish to yellowish thallus which is rimose-areolate only around the perithecia, hemispherically protruding ascomata (to 0.2 mm in diam.), an adpressed involucrellum reaching down to the base of the perithecium, and oblong ascospores (to c. 25 µm long); only reported from a few scattered localities in the Eastern Alps (Austria).