HomeSpecies Search › Flat-topped Agaricus

⚠ If you suspect ingestion of this species, call Poison Control immediately:
1-800-222-1222 (US)  ·  poison.org
Flat-topped Agaricus (Agaricus placomyces) — mushroom identification photo

Flat-topped Agaricus

Agaricus placomyces

⚠ Mildly Toxic
Monitor symptoms; call Poison Control if they persist: 1-800-222-1222
Cap color
white,brown
Cap size
medium
Gill color
pink,brown
Gill attachment
free
Stem
White, with a ring; base slightly bulbous; stains yellow; smells of phenol/anise
Texture
smooth,scaly
Habitat
forest floor,disturbed ground
Fruiting season
summer,fall
Peak season
November–March (coastal CA urban areas)

Key Identification Features

Symptoms & Toxicity

Causes significant GI distress — nausea, vomiting, cramps within 30 min–2 hours. Not life-threatening but unpleasant. Yellow staining reaction in flesh is the key warning sign.

Regions Found

Region data not available

Look-Alikes

No documented look-alikes on record.

Safety disclaimer: This page is for educational purposes only. Never eat a wild mushroom based solely on online information. Always verify identification using multiple reliable field guides and, when possible, consult an experienced forager or mycologist. When in doubt, don't eat it. Spore & Scout accepts no responsibility for identification errors or adverse reactions. If you believe someone has ingested a toxic mushroom, call Poison Control (1-800-222-1222) immediately.