Anamorph: unknown, but related species have a phialidic anamorph resembling Phialocephala or Phialophora. Teleomorph: Stromata and subiculum absent. Ascomata apothecia, to 350 µm diam., scattered, superficial, dark grey (sometimes slightly yellowish when immature or over-hydrated), smooth. Excipulum composed of globose cells, the outer layer brown, paler inside, with a marginal layer of thick-walled hyphal cells. Interascal tissue of simple filamentous paraphyses protruding up to 15 μm beyond the asci, 1-2 μm diam., the tips clavate, to 5 μm diam., dark, sometimes branched near the apex, pigmented due to a well-developed dark brown mucous coating. Asci 70-85 x 10.5-12.5 μm, cylindric-clavate, the ascus pore reaction blue in iodine, 8-spored. Ascospores (13.5-) 14.5-15.5 (-16) x (3-) 4-5 μm [living spores measured in water], fusiform to ellipsoidal, 1-septate, sometimes slightly contricted at the septum, hyaline, smooth, without a gelatinous sheath or appendages.