Galerella nigeriensis (Agaricales), a new species from tropical Africa

A new species, Galerella nigeriensis, from southwestern Nigeria is described. It is characterized by a strongly plicate, dry, yellowish to orange brown pileus, whitish veil on pileus and stipe base, white and pubescent stipe, thick-walled, mostly flattened spores, tibiiform to lageniform cheilocystidia, and presence of hymenophysalides (recorded for the first time in the genus Galerella). Black and white photographs of basidiomata and microscopic elements accompany the description. G. nigeriensis is compared to related species and a worldwide diagnostic key to the genus Galerella is provided.