LICHALP

Verrucaria erubescens Zschacke

Lichenised. Poorly known taxon.

Substrate:

Altitudinal distribution: subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: a species resembling V. csernaensis, with a thin thallus which is grey-green when wet, turning reddish and rimulose when dry, wart-like, protruding perithecia (to c. 0.5 mm in diam.) and larger ascospores (to c. 30 µm long); on temporarily submerged calcareous rocks in streams, only known with certainty from the type locality in Switzerland.