LICHALP

Umbilicaria freyi Codogno, Poelt & Puntillo

Syn.: Umbilicaria grisea Hoffm. f. subpapyria Frey, Umbilicaria hirsuta (Sw. ex Westr.) Hoffm. var. pyrenaica Frey

Lichenised.

Substrate: siliceous rocks

Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) 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, ecologically intermediate between U. grisea and U. deusta; perhaps more widespread in the Alps.