Anamorph: not known. Teleomorph: ascomata apothecia, hypogenous, (75-) 120–200 (-300) μm diam., immersed in leaf tissue, sessile, discoid, opening by a variable number of irregularly torn teeth, the hymenium swelling when wet to become domed. Exciple dark brown below. Disc dark brown. Interascal tissue of paraphyses, cylindrical, septate, 2–3.5 (–4) μm diam., clavate (ca 5 µm diam.) and pigmented greenish brown at the tip. Asci 50-60 × 7.5–12 μm, cylindrical to clavate, arising from croziers, with a small pore blued by iodine, 8-spored. Ascospores biseriately arranged, 6-8.5 × 3-4.5 µm, ellipsoidal, aseptate, hyaline, without a gelatinous sheath or appendages.
Adapted in part from Greenhalgh & Morgan-Jones (1964).