Gyromitra gigas

Medullary excipulum of textura intricata, and ectal excipulum of textura globosa-angularis.

Asci cylindric-clavate, generally uniseriate, 8-spored, without basal croziers, up to 300 µm long, inamyloid in Melzer's reagent.

Paraphyses filiform, septate, branched, 5 to 7 µm wide, with brown granular content, apical cell swollen up to 9 µm.

Ascospores ellipsoidal to slightly fusiform, smooth, hyaline, with a pair of diagnostic polar appendages (one at each pole) up to 3 µm long; according to literature, fully mature spores are ornamented with warts forming an incomplete reticulum.

Herbarium material available: JTP2094/24.