摘要：Volvariella leucocalix sp. nov. is a new record from Brazilian semiarid region. It is characterized macroscopically by the plane and shallowly umbonate and fuliginous brown, 26 mm in diam. pileus and white volva. Microscopically the basidiospores are ellipsoid to elongate, 5–5.6 × 2.6–3.6 µm, pleurocystidia fusoid-ventricose, 36–49 × 6–11 µm and pileipellis as a trichoderm with cylindric elements
