Kingdom: Fungi
Phylum: Basidiomycota
Class: Basidiomycetes
Order: Agaricales
Family: Strophariaceae
Genus: Psilocybe

• Pileus: 2 — 8 cm, Conic to convex, becoming broadly convex to plane in age, may retain a slight umbo, margin even, reddish-cinnamon brown when young becoming golden brown in age, viscid when moist, hygrophanous, glabrous, sometimes with white universal veil remnants decorating the cap, more or less smooth. Flesh whitish, bruising blue in age or where injured.
• Gills: Adnate to adnexed to sometimes seceding attachment, close, narrow to slightly wider towards the center, at first pallid to gray, becoming dark purplish to blackish in age, somewhat mottled, edges remaining whitish.
• Spore Print: Blackish violet.
• Stipe: 4 — 15 cm long, .5 — 1.5 cm thick, white to yellowish in age, hollow or somewhat stuffed, the well developed veil leaves a persistent white membranous annulus whos surface usually becomes concolorous with the gills because of falling spores, bruising blue or bluish-green when injured.
• Taste: Farinaceous
• Odor: Farinaceous
• Microscopic features: Spores 11.5 — 17 × 8 — 11 µm, subellipsoid, basidia 4-spored but sometimes 2- or 3-, pleurocystidia and cheilocystidia present.¹