Description: Thallus crustose, indistinct, not lichenized. Perithecia black, up to 0.5 mm across. Involucrellum present K+ green; exciple of cellular hyphae, usually without bark cells, brown-black in upper part, pale or colourless in lower part; pseudoparaphyses slender, stiff, long-celled, branched and anastomosing, c. 1 μm thick; periphyses absent; hymenial gel I-. Asci (4-)8-spored, cylindrical, K/I-, fissitunicate, the apical dome with an indistinct ocular chamber. Ascospores 1(-3)-septate, slightly constricted at septa, hyaline, narrowly ellipsoid, slightly pointed at both ends, 30-47 x 7-10 μm. Photobiont absent. Spot tests: all negative. Chemistry: without lichen substances.
Note: a mainly central European, non-lichenized, saprophytic species also known from northern Spain, found on the trunks of broad-leaved deciduous trees, in woodlands, below the montane belt; certainly very rare in Italy.