LICHALP

Verrucaria ochrostoma (Borrer ex Leight.) Trevis.

Syn.: Sagedia ochrostoma Borrer ex Leight.

Lichenised. Poorly known taxon.

Substrate: calciferous rocks

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: closely related to V. murorum, this species, characterised by the superficial thallus and immersed perithecia without an involucrellum, seems to prefer concrete walls and nutrient-enriched, dusty surfaces at relatively low elevations; apparently most frequent in the Southern and Western Alps, but perhaps not distinguished elsewhere.