HomeSpecies Search › Western Jack-o-Lantern

⚠ If you suspect ingestion of this species, call Poison Control immediately:
1-800-222-1222 (US)  ·  poison.org
Western Jack-o-Lantern (Omphalotus olivascens) — mushroom identification photo

Western Jack-o-Lantern

Omphalotus olivascens

⚠ Moderately Toxic
Call Poison Control: 1-800-222-1222
Cap color
orange,yellow
Cap size
large
Gill color
orange,yellow
Gill attachment
decurrent
Stem
Orange-yellow, solid, in clusters at base of oaks
Texture
smooth
Habitat
dead wood,forest floor
Fruiting season
fall
Peak season
Summer-Fall

Key Identification Features

Symptoms & Toxicity

Onset within 2-3 hr: severe GI distress — profuse vomiting, diarrhea, severe cramping. Usually self-limiting in 24 hr. No hepatic or renal toxicity.

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.