Dissingia leucomelaena

Medullary excipulum formed by filamentous, interwoven, hyaline hyphae.

Ectal excipulum with subglobose to slightly angular hyphae, from which short cylindrical hyphae with blunt ends emerge externally.

Asci cylindrical, uniseriate, operculate, 4-spored (or 8-spored), without croziers at their base, inamyloid in Melzer's reagent.

Ascospores ellipsoidal, with slightly flattened sides, hyaline, smooth, moderately thick-walled, with a large lipid guttule occupying more than two-thirds of the spore.