Ascomata apothecioid, hypophyllous, superficial, solitary, discoid, non-ostiolate, 445–550×75–105 μm high, pseudoparenchymatous basal stroma 12.5–20 thick, walls of brown textura angularis, powdery, ill-differentiated, dark grey centrally with raised pale gray margins, pseudoparaphyses filiform, up to 2 μm wide, septate, unbranched, hyaline, but branching above the asci, becoming inflated and pigmented at apices to form an epithecium.
Source: wiktionary