LICHALP

Henrica vallorcinensis (Croz.) ined. (provisionally placed here, ICN Art. 36.1b)

Syn.: Polyblastia vallorcinensis (Croz.) Zschacke, Verrucaria vallorcinensis Croz.

Lichenised. Poorly known taxon.

Substrate: calciferous rocks, siliceous rocks

Altitudinal range: from the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron) 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 species with a thin, grey to brown thallus, protruding hemispherical ascomata with a descending involucrellum, and finally brown, muriform ascospores; perhaps close to or even identical with H. melaspora; on humid faces of siliceous rocks along river banks; only known from the type locality in the Western Alps (France), and from Switzerland, near the border with France (Haute Savoie).