A small, whitish to pale gray funnel mushroom of lawns, pastures and meadows that often grows in arcs or fairy rings. It contains muscarine at potentially dangerous levels. Because it grows in the same grassy places as the edible fairy ring mushroom (Marasmius oreades), and where children and pets play, it is an important source of poisonings.
Do not eat. Contains muscarine, at levels that can be dangerous. Symptoms begin about 15-30 minutes after eating: heavy sweating, salivation and tearing, followed in larger doses by abdominal pain, severe nausea, diarrhea, blurred vision and labored breathing. Symptoms usually subside within a few hours. Deaths are rare but have resulted from respiratory failure or heart-rhythm problems in severe cases. Full safety details in notes.
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Habitat
Grassy places: lawns, pastures, meadows and parks, often in arcs or rings; summer to fall, and late fall to winter in coastal California.
Distribution
Europe and North America.
Characteristics
Cap: 2-4 cm, shallowly convex becoming flat or slightly depressed, sometimes umbonate, whitish to ashy gray or grayish tan with a frosted look, becoming streaked or water-spotted; margin may crack. Gills: adnate becoming subdecurrent, close to crowded, narrow, whitish to cream-buff. Stem: 2-4 cm long, 4-10 mm thick, pallid, often flattened, not tough, darkening where handled. Odor: mild. Spore print: white. Microscopic: spores smooth, inamyloid, 4-5 x 2-3 µm.
