The cap of this mushroom is white and up to 1 inch across. It is convex, becoming flat; slightly wrinkled. The gills are attached to the stem or beginning to run down it. They are distant or nearly so with cross-veins. The stem is 1-2 inches long and is white when young but becomes black. The stem lacks mycelia and is directly inserted into the substrate which is usually an oak leaf or twig. It is covered with tiny white hairs.
This mushroom grows on leaf litter and twigs in hardwood forests. This photo is the first that it was seen in Fontenelle Forest so it is probably rare.
Marasmiella nigripes is an alternate name.
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