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A review of the nomenclatural type specimens of Pluteus basionyms is presented as part of the monographic study of the genus in Mexico carried out by the author. In this paper, 19 type materials are reviewed, of the 33 taxa cited from Mexico. Corrections and comments are provided for some type species of the original descriptions, and Pluteus veraecrucis is synonymized as P. horridus.
María Olivia Rodríguez Alcántar (Mon,) studied this question.