Fairy Ring Mushroom
Tan to reddish brown, knobbed cap; off-white gills. Grows in grassy areas, lawns, meadows, often in arcs or circles called fairy rings. May–September. Cap bell-shaped with inrolled margins, becoming convex and knobbed; pale tan to buff to reddish brown; texture dry, smooth, feltlike. Gills broad; spacing well-separated; off-white; gills attached or free. Stalk straight; cream to pale buff; texture dry, tough, feltlike. Spore print white. Spores magnified are elliptical, smooth, colorless.
Lookalikes: Certain poisonous Clitocybe and Inocybe species can be confused with the fairy ring mushroom. The sweating mushroom (Clitocybe dealbata), also poisonous, is gray-pink with gills running down the stalk. Poisonous Inocybe mushrooms usually have gray-brown gills.