Gyromitra esculenta

Excipular hyphae filamentous, broad, intermixed, with abundant cylindrical to vesiculose, pyriform, sinuous terminal hyphae with widened apices externally.

Asci cylindrical, uniseriate, 8-spored, with simple base (without croziers), up to 350 µm long, inamyloid in Melzer's reagent.

Paraphyses filiform, septate, some branched from the base, 4 to 6 µm wide, apical cell swollen up to 8 µm.

Ascospores ellipsoidal, smooth, hyaline, moderately thick-walled, with two small polar lipid guttules, one at each end.