⚠ If you suspect ingestion of this species, call Poison Control immediately:
1-800-222-1222 (US) · poison.org
1-800-222-1222 (US) · poison.org
Key Identification Features
- Dark olive-brown to almost black cap with inrolled margin
- crowded pale olive gills
- white acrid milk
- very acrid taste
- under birch and in northern forests
- contains necatorin — potentially mutagenic
- inedible
Symptoms & Toxicity
GI irritation from acrid compounds; necatorin has mutagenic potential in lab studies; do not eat
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.