Diatrype stigma

Asci cylindrical to slightly fusiform, generally biseriate to slightly irregular, with a small apical apparatus that does not react with iodine reagents (inamyloid).

Interascal tissue (paraphyses) difficult to observe, filamentous, with smooth, hyaline, thin-walled hyphae.

Ascospores cylindric-allantoid, smooth, thin-walled, with faint very pale grayish-brown intracellular pigment, almost hyaline, with small dark guttules, preferentially at the poles.