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SUMMARY
Hydnocystis Tul. & Tul. is shown to be a monotypic genus containing only H. piligera Tul. & Tul. in the family Geneaceae of the Tuberales. Sepultaria (Cooke) Boud. (Pezizales) is shown to be congeneric with the older genus Geopora Harkness. Two new forms and a new subspecies, all hypogeous, are proposed for Geopora. Two species of Sepultaria and several in Hydnocystis are transferred to Geopora. Hydnocystis convolute McAlpine is transferred and renamed Peziza jactata Burdsall & Korf.