Syn.: Porina guentheri (Flot.) Zahlbr. var. lucens (Taylor) Swinscow, Porina lucens (Taylor) A.L. Sm., Verrucaria lucens Taylor
Lichenised.
Substrate: siliceous 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: a species probably closely related and similar in habitus to P. guentheri, but ascospores partly (up to 25 %) submuriform with usually 7 transversal septa and 1 longitudinal septum in one of the central cells; on moist siliceous rocks near lakes and streams at low elevations; widespread in SW Europe but rare, being most common on the British Isles; reported also from the base of the Western Alps (France).
