Calosphaeria parasitica  

Stromata: absent.

Ascomata: perithecia, 0.25(-0.75) mm diam., necks to 0.75 mm, in lax to crowded groups of 4-15, sometimes deformed by mutual pressure, occasionally solitary (but then with others in groups nearby), overlying or amongst other pyrenomycetes, immersed beneath bark. Interascal tissue composed of paraphysis-like ascogenous hyphae greatly exceeding the asci. Asci 14-23 x 3-4.5 µm. Ascospores 3-5 x 0.5-1 µm, often slightly curved, aseptate.

Anamorph: unknown.