Gasterocarp globose, ellipsoid, tuberiform or irregular, basally attached. Peridium pale-coloured, glabrous, dry, not separable, indehiscent or occasionally so in old specimens. Gleba white becoming pinkish brown, labyrinthoid to loculate, with empty, irregular chambers, lacking any radial arrangement. Tramal plates broad, gelatinized or not. Clamp-connexions absent. Columella absent or sometimes partially developed; sterile base absent or very occasional. Spore deposit pinkish brown. Spores heterotropic, statismosporic, iso- or heterodiametric, angular, with well defined facets, smooth. Basidia cylindric to ventricose, bearing two or four sterigmata. Hymenophoral trama regular, hyaline, partially gelatinized or not. Subhymenial layer poorly developed. Peridiopellis a poorly differentiated, narrow, repent epicutis. Development angiocarpic. Distribution World-wide, rare. Hypogeal or subepigeal.

Type species: Richoniella leptoniispora (Richon) Costant. & Dufour [= Hymenogaster leptoniisporus Richon].