Descomyces is a genus of secotioid fungi in the Bolbitiaceae, characterised by partially enclosed fruitbodies, a rubbery to leathery peridium, and a loculate gleba lacking true gills. The genus represents a gasteroid evolutionary lineage derived from agaricoid ancestors, closely related to Descolea and Pholiotina.

Basidiome: Secotioid, subglobose to irregularly rounded, often slightly lobed; 20-45 mm diameter. Surface smooth to finely cracked, brown to chestnut-brown, sometimes paler toward the base. Texture firm, rubbery, not brittle; peridium thin to moderately thick, elastic when fresh.
Peridium: Brown, smooth or with fine radial cracking in older specimens. Surface dry; occasionally with faint fibrils or patches of adhering soil.
Gleba: Loculate, composed of irregular chambers. Pale brown to cinnamon-brown when young, darkening with age. No true gills; trama firm, not powdery. Odour mild or indistinct. No distinct stipe, though a rudimentary basal point may be present.