Wikipedia
Marasmiaceae
The Marasmiaceae are a family of basidiomycete fungi which have white spores. They mostly have tough stems and the capability of shrivelling up during a dry period and later recovering. The widely consumed edible fungus Lentinula edodes, the shiitake mushroom, is a member of this family. According to a 2008 estimate, the family contains 54 genera and 1590 species.
The family Omphalotaceae, described by A. Bresinsky in 1985 as a segregate from the Tricholomataceae, is currently considered synonymous with Marasmiaceae. Genera formerly included in that family (including Anthracophyllum, Gymnopus, Lentinula, Marasmiellus, Mycetinis, Rhodocollybia, Omphalotus) are now classified in the Marasmiaceae.