LICHALP

Thelidium zwackhii (Hepp) A. Massal.

Syn.: Sagedia zwackhii Hepp, Thelidium fueistingii auct. non Körb., Thelidium microcarpum (Davies ex Leight.) A.L. Sm., Thelidium montinii Beltr., Thelidium subgelatinosum Zschacke, Thelidium velutinum auct. p.p. non (Bernh.) Körb., Thelidium xylospilum (Nyl.) Zschacke, Verrucaria microcarpa Davies ex Leight., Verrucaria xylospila Nyl.

Lichenised.

Substrate: calciferous rocks, calciferous soil

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 mainly temperate, ecologically broad-ranging, pioneer species found both on calcareous and on siliceous rocks, and on thin layers of soil, e.g. on walls, pebbles, etc., occasionally also in periodically submerged sites; one of the few species of the genus which occur at low altitudes.