Lecidea antiqua B. de Lesd.

Lichenised. Poorly known taxon.
Substrate: siliceous rocks
Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a lecideoid species of unclear relationship (?Teloschistaceae), with a grey, areolate to verrucose thallus (K-!), orange apothecia to c. 0.5 mm in diam. (K+ ?red), finally sessile and persistently flat, with a thin margin slightly paler than the disc, a hyaline hypothecium, a granular, yellow epihymenium, hardly conglutinated paraphyses, 8-spored asci, and simple ascospores (to c. 20 µm long); only known from the type locality in the Western Alps (Italy), on schist.
Italy: Valle d'Aosta;