LICHALP

Bagliettoa caesiella (Servít) ined. (provisionally placed here, ICN Art. 36.1b)

Syn.: Amphoridium caesiellum (Servít) Servít, Verrucaria caesiella Servít, Verrucaria calciseda DC. f. caesia Anzi

Lichenised. Poorly known taxon.

Substrate: calciferous rocks

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: a calcicolous species closely related to B. calciseda, with a spreading, whitish mainly endolithic thallus, differing in the smaller, densely arranged ascomata (to 0.3 mm in diam.), and the ellipsoid ascospores measuring 18-21 × 10-12 μm; rarely collected, and perhaps more widespread in the Alps.