Description: Thallus crustose, endosubstratic, inapparent, the hyphal walls sometimes olivaceous, K+ violet. Apothecia micareoid, sessile, black, convex-hemispherical to subglobose, (0.08-)0.12-0.2 mm across, without a proper margin. Proper exciple inapparent; epithecium dark brown, 7-9 μm high, N-, K-, but the brown pigment partly dissolving, revealing some faintly K+ violet areas; hymenium dilute brown, especially in upper part, 35-40 μm high, N-, the pigment dissolving in K; paraphyses scanty, (0.5-)0.8-1 μm thick, the apical cells sometimes to 1.3 μm wide; hypothecium dilute brown, N-, K-. Asci 8-spored, clavate, the I+ blue tholus with a wide, I+ dark blue tube structure, without ring-structure. Ascospores 1-celled to rarely a few 1-septate, hyaline, ellipsoid, ovoid-ellipsoid or oblong-ellipsoid, 6.7-9.8 x 2.5-4 μm. Pycnidia partly immersed, black, c. 40 μm across, the wall olivaceous green, K+ violet. Conidia bacilliform, 3.8-4.5 x 0.7-1 μm. Photobiont micareoid, the cells 4-7 μm wide. Spot tests: thallus K-, C-, KC-, P-. Chemistry: thallus, pycnidial walls and epithecium with the Sedifolia-grey pigment; epithecium with the Elachista-brown pigment.
Note: a poorly known, inconspicuous species of acid bark and wood in rather humid-shaded situations.