Cap 5-15mm high x 9-14mm in diameter. membranous, pleated and so thin that it is almost translucent. Domed, expanding to shallowly convex. Buff to yellowish ochraceous in centre, greying from the margin as it matures.
The white gills turn grey and then black; they radiate from a collar around the top of the stem. and are thin and quite well spaced. Spores ellipsoid to almond-shaped.
30-70 mm long x 1-2 mm whitish. Slender with a slight basa bulb.
Found in fields, lawns or on roadsides
In short grass on lawns and sometimes in parks and meadows, usually in small groups.