This is the first flora of macromycetes published for Mexico. The first part of it contains rather elaborate keys to nearly 600 species; the second part illustrations of all species treated, partly as line-drawings, partly as black-and-white photographs (often more than one per species). The variation of fungi represented reflects the great ecological diversity of Mexico. A list of Mexican names of fungi and lists of edible, poisonous, hallucinogeneous and wood-destroying fungi are added, as well as a Spanish glossary. The disadventage of the lack of microscopical characters in the keys is partly compensated by the presence of numerous illustrations.