"Ascomata dispersed, developing in necrotic areas of the host thallus, visible as black dots often provided with paler apical dots indicating the ostioles. Ascoma in longitudinal section subspherical or flattened with protruding ostiolar region, 200–250 μm diam.; wall brown, laterally c. 15–20 μm diam., consisting of about 3–4 layers of cells, cells 5–10 μm diam. Paraphysoids 1–2.5 μm diam. Asci 70–100× 7.5–10.5 μm, 8-spored (but often with fewer spores reaching maturity). Ascospores ± uniseriate to half-overlapping, medium to dark brown, (1–)2(–3)-septate, 11.5–15×4–5.5 μm, the middle cell slightly wider than the end cells, slightly constricted at the septa, torus indistinct, with a distinct verruculose sculpture visible in light microscopy.
Conidiomata immersed in pale necrotic areas of the thallus surrounded by a black line, black, subspherical to ellipsoid, 50–100 μm diam.; pycnidial wall brown, dark brown around the ostiole, 9–15 μm thick, composed of 3–5 layers of cells 3–9 μm diam., inner cells hyaline. Conidiogenous cells ampulliform, mainly 5–9×3–4.5 μm. Conidia broadly ellipsoid to subspherical, with one large guttule or rarely two smaller guttules, (3.5–)3.8–5.1(–6.2)× (2.8–)3.2–3.8(–4.3) μm, l/b ratio (1.0–)1.1–1.5(–1.8) (n=140)."