LICHALP

Caloplaca asserigena (Stizenb. ex J. Lahm) H. Olivier

Syn.: Blastenia asserigena (Stizenb. ex J. Lahm) Zahlbr., Blastenia assigena Arnold, Callopisma asserigenum Stizenb. ex J. Lahm, Caloplaca assigena (Arnold) Dalla Torre & Sarnth., Lecanora asserigena Stizenb. nom. nud.

Lichenised. Poorly known taxon.

Substrate: bark, lignum

Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: a species with a thin grey thallus and small aggregated apothecia with brown-red to blackish discs, the epihymenium reacting K+ purple; on thin twigs of various trees, more rarely on wood; most records from the Alps are historical.