Anamorph: not known.
Teleomorph: ascomata apothecia, 0.3-1 (-1.3) mm diam, 0.2-0.25 mm tall, arising singly or in groups, at first closed and subglobose, opening in the early stages of development to expose a flat black disc, sessile, superficial, the outline circular, margin not or slightly raised above the disc and sometimes crenulate, with anchoring hyphae towards the base, the hyphae septate, 2.5-4 µm diam., smooth-walled, brown, penetrating the substrate. Exciple 35-60 µm thick at the sides and 100-125 µm tall at the base, composed of angular thick-walled brown cells 7-12 µm diam, wider outside and smaller towards the hymenium; the outer cell layer composed of cells more or less oriented vertically and elongated to 12 x 6 µm, with strongly agglutinated and dark brown external ends and in cross-section visible as a compact dark brown crust. Hypothecium yellowish, consisting of thin-walled isodiametric cells, 5-20 µm diam. Hymenium yellowish or yellowish green, 40-50 (-60) µm tall; hymenial gel surrounding the upper parts of the asci staining blue in iodine. Interascal tissue of cellular pseudoparaphyses, branched and anastomosed, 1.5-2.5 µm thick, the tips rounded, not or slightly enlarged to 3-3.5 µm diam, mostly exceeding the asci and forming a yellowish brown epithecium. Asci (35-) 40-50 (-55) x 8-12 µm, clavate, with a distinct stipe, apparently fissitunicate, with an ocular chamber in the apical dome, contents dextrinoid in iodine, 8-spored. Ascospores irregularly bi- or tri-seriate, (9-) 10-12.5 (-14) x (3.5-) 4-5 µm, rather variable in shape but mostly obovoid, with rounded or slightly taperIng ends, brown, 1-septate and sometimes slightly constricted at the septum which may be thickended, the upper cell usually broader, smooth, without an epispore, gelatinous sheath or appendages.
Not formally evaluated, but the species is reasonably common (though overlooked) and is unlikely to be threatened.
On dead wood of a range of broadleaved trees, also on semi-woody substrata such as Rubus stems.
Throughout the British Isles.