Marasmius oreades grows extensively throughout North America and Europe in the summer 
and fall, or year-round in warmer climates. It loves grassy areas such as lawns, meadows, 
and even dunes in coastal areas.

It grows gregariously in troops, arcs, or rings (type II, which causes the grass to grow 
and become greener). The cap is 1-5 cm across; bell-shaped with a somewhat inrolled margin 
at first, becoming broadly convex with an even or uplifted margin, but often retaining a 
slight central bump; dry; smooth; pale tan or buff, occasionally white, or reddish tan; 
usually changing color markedly as it dries out; the margin sometimes faintly lined.
The bare, pallid stem grows up to about 7cm by 5mm in diameter.

The gills are attached to the stem or free from it,fairly distant 
(rather a distinctive character), and white or pale tan, dropping a white spore-print. 
The spores, themselves, are 7-10 x 4-6 µ; smooth; elliptical; inamyloid. 
Cystidia absent. Pileipellis without broom cells.

This mushroom can be mistaken for the toxic Clitocybe dealbata which lacks an umbo, 
is white to grey in color, and has closely spaced decurrent gills.