LICHALP

Thelidium methorium (Nyl.) Hellb.

Syn.: Involucrothele aeneovinosa (Anzi) Servít, Involucrothele kutakii (Servít) Servít, Polyblastia kutakii Servít, Sagedia aeneovinosa Anzi, Thelidium aeneovinosum (Anzi) Arnold, Thelidium aeneovinosum (Anzi) Arnold var. kutakii Servít, Thelidium diaboli A. Massal., Thelidium kutakii (Servít) Servít, Verrucaria methoria Nyl.

Lichenised.

Substrate: siliceous rocks, , calciferous rocks, intermediate rocks (such as calciferous schists)

Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) 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 to boreal-montane, probably circumpolar lichen found on periodically submerged siliceous rocks in alpine to montane creeks; widespread throughout the siliceous Alps.