LICHALP

Lathagrium undulatum (Laurer ex Flot.) Poetsch var. granulosum (Degel.) ined. (provisionally placed here, ICN Art. 36.1b)

Syn.: Collema undulatum Laurer ex Flot. var. granulosum Degel.

Lichenised. Poorly known taxon.

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 alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)

Note: a usually sterile morph with more or less globular isidia, not always distinguished from the typical variety; on calcareous rocks and soil layers; widespread in the Northern Hemisphere, but real distribution in the Alps difficult to evaluate.