⚠ If you suspect ingestion of this species, call Poison Control immediately:
1-800-222-1222 (US) · poison.org

White Fiber Cap

Inocybe geophylla

⚠ Moderately Toxic

Call Poison Control: 1-800-222-1222

Cap color: white,cream
Cap size: small
Gill color: white,gray,brown
Gill attachment: attached
Stem: White, slender, fibrous; no ring
Texture: fibrous
Habitat: forest floor
Fruiting season: summer,fall
Peak season: Summer-Fall

Key Identification Features

Cap 1-4 cm, white to lilac-tinted (var. lilacina), silky fibrous surface with central umbo. Gills pale becoming brownish. Slender fibrous stem. Earthy or spermatic smell. Brown spore print. Contains muscarine — causes cholinergic toxidrome. Common in Rocky Mountain conifer forests.

Symptoms & Toxicity

Onset 15-30 min: muscarinic toxidrome — profuse sweating, salivation, lacrimation, GI cramps, bradycardia, miosis. Classic SLUDGE syndrome. Treat with atropine.

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.