LICHALP

Caloplaca marmorata auct. non (Bagl.) Jatta

Syn.: Callopisma marmoratum auct. non Bagl., Caloplaca lactea (A. Massal.) Zahlbr. f. fulva (Harm.) Zahlbr., Caloplaca lactea (A. Massal.) Zahlbr. f. rubra (B. de Lesd.) Zahlbr., Gyalolechia lactea (A. Massal.) A. Massal. f. rubra B. de Lesd., Lecanora lactea (A. Massal.) Leight. f. fulva Harm., Xanthocarpia marmorata (auct. non Bagl.) Frödén, Arup & Søchting

Lichenised.

Substrate: calciferous rocks

Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)

Note: a species of the C. crenulatella-lactea-group, with an endolithic thallus and finally sessile, rusty-red apothecia which are less than 0,5 mm in diam.; usually on limestone pebbles; widespread in the Mediterranean region, with some records from the Western Alps, at low elevations. According to Nimis (2016), the type of Callopisma marmoratum Bagl. (MOD-TSB) clearly belongs to the lichen which is usually called “Caloplaca subochracea” (see note on that species), a fact that will have quite heavy nomenclatural consequences to be dealt with in future studies.