Distribution: C - Tosc (TSB 35208), Sar. S - Camp (Nimis & Tretiach 2004, Garofalo & al. 2010), Pugl (Nimis & Tretiach 1999), Bas (Bartoli & Puntillo 1996, 1998), Si (Grillo & al. 2007b).
Description: Thallus crustose, endosubstratic or thinly episubstratic, continuous ro rimose around the perithecia, whitish to violet-grey. Perithecia black, 0.4-1 mm across, half- immersed, hemispherically projecting with the upper half, with an apical ostiole. Exciple carbonized in the upper half, colourless to pale brown in lower half, up to 120 µm thick; hamathecium of persistent, slender, 1-2 µm thick, sparingly branched paraphyses; hymenial gel K/I- blue or parly orange. Asci (6-)8-spored, cylindrical, without ocular chamber. Ascospores 3-septate, not constricted at septa, hyaline, spindle-shaped with subacute ends, 17-22 x (6-)8-10(-12) μm, uniseriately arranged in the asci, without a perispore. Photobiont trentepohlioid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a subtropical species of sheltered, warm-humid, shaded surfaces of calcareous rocks, usually not far from the sea; to be looked for further in Tyrrhenian Italy.