LICHALP

Umbilicaria grisea Hoffm.

Syn.: Gyrophora grisea (Hoffm.) Turner & Borrer, Gyrophora hirsuta (Sw. ex Westr.) Ach. var. grisea (Hoffm.) Th. Fr., Gyrophora murina (Ach.) Ach., Umbilicaria murina (Ach.) DC.

Lichenised.

Substrate: siliceous rocks

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: on steeply inclined to underhanging surfaces of siliceous rocks only slightly wetted after rain, usually below the alpine belt; several records from the Alps require confirmation.