1) Fungus genus 2) Genus marasmius 
Marasmius is a genus of mushrooms, in the family Marasmiaceae. It contains about 500 species of agarics, of which a few, such as Marasmius oreades, are edible. However, most members of this genus are small, unimpressive brown mushrooms. Their humble appearance contributes to their not being readily distinguishable to non-specialists, and they are ...
Marasmius is a genus of mushroom, with very tough gills which are not incised.
[n] - chiefly small mushrooms with white spores
genus Marasmius noun chiefly small mushrooms with white spores