Psilocybin-containingHymenogastraceae
Psilocybe allenii
Near-identical to P. cyanescens but with a flat, non-wavy cap margin.
- Cap
- Convex to flat, 2-9 cm, caramel brown drying pale, margin stays even rather than wavy.
- Gills
- Adnate, pale then purple-brown.
- Stem
- 30-90 mm, white, bluing.
- Flesh
- White, blue where cut.
- Spore print
- Dark purple-brown
- Habitat
- Wood chips and mulch in urban landscaping, often near the coast.
- Distribution
- West Coast of the USA from Los Angeles to Seattle.
- Season
- Late autumn to early winter.
- Bruising
- Strong blue.
- Odour
- Farinaceous.
- Potency
- Potent
Key features
- ▪Flat cap margin unlike wavy P. cyanescens
- ▪Wood chips in urban settings
- ▪Strong blue bruising
Field tests
- Spore print must be dark purple-brown
- Compare the margin with a P. cyanescens photo
Edibility
Contains psilocybin.
Warning
Galerina marginata shares the habitat exactly.
Photo and feature-based identification is probabilistic. Never consume a wild mushroom on the basis of an app result — confirm with an experienced mycologist.