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ABSTRACTSeven species of bioluminescent fungi are recorded from the cloud forests in Mexico. Six represent new species belonging to the genus Mycena, whereas Mycena globulisporais a new distribution record for the country. Descriptions, illustrations, photographs, and an identification key to bioluminescent fungi species from Mexico are provided. Sequences of nuc rDNA internal transcribed spacer (ITS1-5.8S-ITS2 = ITS) region were generated for barcoding purposes and comparisons with similar species.

Phylogenetic placement of the infrageneric section Hygrometrici(genus Marasmiussensu stricto) in prior molecular phylogenetic studies have been unresolved and problematical. Molecular analyses based on newly generated ribosomal nuc-LSU and 5.8S sequences resolve members of section Hygrometricito the family Physalacriaceae. The new genus Cryptomarasmiusis proposed to accommodate members of Marasmiussection Hygrometrici. Fourteen species belonging to section Hygrometriciwhose available type specimens bear morphological features corresponding to the new genus are formally combined in Cryptomarasmius. Taxonomic transfers are made only for taxa in which type specimens have been studied and/or representative material sequenced. Although other species placed in section Hygrometricimay belong in Cryptomarasmius, further transfers are not proposed until additional studies on type material are conducted.

A new lignicolous species of phalloid fungi, discovered recently on the western African island of São Tomé, is described as Phallus drewesii. A comprehensive description, photographs and comparison with phenetically similar species are provided.