LICHALP

Cliostomum flavidulum Hafellner & Kalb

Syn.: Lecanora navarrensis Etayo

Lichenised.

Substrate: bark

Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a species with a pale yellowish, sorediate thallus, occasionally fertile with biatorine, often pruinose apothecia, and 1-septate ascospores; on both broad-leaved and coniferous trees in forests and open woodlands in areas with an oceanic climate; widespread in Western Europe, from the Alps there are so far a few records along the northern rim.