LICHALP

Squamarina pachylepidea (Hellb.) Poelt

Syn.: Lecanora crassa (Huds.) Ach. subsp. pachylepidea (Hellb.) Th. Fr., Placodium saxicola (Pollich) Frege var. pachylepideum Hellb.

Lichenised. Poorly known taxon.

Substrate: calciferous 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 forming small (c. 1 cm in diam.) thalli which are areolate-squamulose in the centre and with marginal lobes (c. 2-3 mm long), the apothecia with ochre discs and persistently prominent margins; based on a type from Sweden where it was found on siliceous rocks; the few, calcicolous records from the Alps need confirmation.