LICHALP

Cladonia trassii Ahti

Syn.: Cladonia lepidota auct.

Lichenised.

Substrate:

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: an arctic-alpine species also recorded from Tierra del Fuego, resembling the strictly arctic C. stricta, but with centrally proliferating scyphi and constantly containing atranorin; on acid soil near or above treeline; all Alpine records of this species are under C. stricta or C. lepidota. According to Ahti (see Nimis 2016) records from the Alps most likely refer to C. trassii.