A morphological study of Mexican collections of Crepidotus cinnabarinus, C.
croceitinctus C. palmarum and C. quitensis is provided. The relationships
of these species with close allies are examined and discussed. Microscopica
l observations on the type collections of C. carpaticus, C. cinnabarinus, C
. croceitinctus, C. luridus vars luridus, minor and oaxacae, C. macedonicus
, C. palmarum, C. quitensis, C. subcroeitictus and C. unicus are included.
Illustrations of the microscopic features of all taxa are presented.