Graminum is the gen. pl. of gramen, which means grass.
The pileus small, membranaceous, convex, then nearly plane, umbonate, deeply and distinctly striate or sulcate, tinged with rufous, the furrows paler, disc brown.
The gills are attached to a collar that is free around the stem, few in number, slightly ventricose, cream-color.
The stem is short, slender, equal, smooth, shining, black, whitish above.
The spores are globose, 3–4µ.
This species is very near M. rotula but it can be easily distinguished by the pale rufescent, distinctly sulcate pileus, and its growing on grass. I have frequently found it on the Chillicothe high school lawn.
Marasmius siccus. Schw.
The Bell-Shaped Marasmius.
