A revised key to the species of Mycena section Fragilipedes of the Northern Hemisphere Northern Hemisphere

A revision of the keys to the species of Mycena (Pers.) Roussel section Fragilipedes of the Northern Hemisphere as published by Maas Geesteranus (1988a) is presented here. New taxa published between 1988 and 2003 are included, as well as some species transferred from other sections of Mycena and from the genus Hydropus. 90 taxa (87 species and 3 varieties) are included in this new key and the taxa excluded from sect. Fragilipedes are also mentioned. In addition to the key, 6 tables are introduced, illustrating some microscopic characters.