LICHALP

Trimmatothele perquisita (Norman) Norman ex Zahlbr.

Syn.: Coniothele perquisita Norman, Verrucaria perquisita (Norman) Ertz & Diederich

Lichenised.

Substrate: calciferous rocks

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 calcicolous species with an endolithic to thin, variably coloured thallus, hemispherically protruding ascomata with involucrellum surrounding the perithecium, moderately polyspored asci, and oblong to ellipsoid, simple ascospores (to c. 10 µm long). The genus is not generally accepted, and the species was treated in Verrucaria by some authors; widespread in Europe, from the boreal to the nemoral-subalpine zone; from the Alps there are a few scattered records only.