Teleomorph: stromata effuse, in wood or bark. In wood: lifting the surface, in low ± domed structures or larger plates, the surface ± blackened. In bark: covered or not with periderm, raising and ± blackening upper part of the parenchyma. Ostioles separately emergent, prominent, 120-180 µm diam. and 50-150 µm in height, rounded-globular or conical, entire or ± furrowed, never cruciform. Ascomata perithecia, (300-) 400-600 (-700) µm diam., in a single layer, close together and sometimes distorted due to contact with other perithecia, spherical to ovoid, with a short neck. Interascal tissue of very thin-walled tapering paraphyses, often deliquescent at matirity. Asci (30-) 40-60 x 5-7 µm (spore-bearing part, with a long tapering stalk 70-120 µm in length, with a small apical ring that may or may not blue in iodine, 8-spored. Ascospores (6.2-) 8-11 x 1.5-2.2 µm, allantoid, aseptate, pale yellow, thin- and smooth-walled, without an epispore or gelatinous sheath.