Psilocybe herrerae

Psilocybe herrerae Guzmán (1978)



Macroscopic feat.:
  • Cap/Pileus: 0.8-1 (1.9) cm broad. Conic to convex, sometimes papillate. Surface smooth to dry, finely fibrillose-rimose. Brown to sepia brown, hygrophanous, fading in drying to yellowish, sometimes with bluish tones. Flesh white, bruising bluish where injured.
  • Gills/Lamellae: Attachment adnate, becoming purplish brown to brownish violet at spore maturity.
  • Stem/Stipe: 30-80 (110) mm long by 1-2.5 mm thick. Equal overall, slightly narrowing near the apex and tapering into a long pseudorhiza. Brownish or nearly the same color as the cap, quickly bruising bluish, especially from the base upwards. Surface covered with fragile fibrillose-floccose patches.

Microscopic feat.:
  • Basidio/Spores: Dark purplish brown in deposit, subellipsoid in side view and subrhomboid in face view, 5-6 by 3.3-4.9 µm.
  • Basidia: 4-spored.
  • Pleurocistidia: 12-25 by 6-8.8 µm, primarily fusoid-ventricose, few are ventricose-rostrate with an abbreviated neck.
  • Cheilocystidia: 13-23 (27) by 5.5-7.7 µm variable in form, 7-11 by 1.5-2.5 µm, sometimes irregularly forking.

Habitat: Solitary to gregarious, often along road cuts, in soils high in sand and clay, and in open forests dominated by pines, sweetgums, and oaks. Found in June and July in Chiapas and Veracruz, Mexico.

Comment: Judging by the rapid bluing reaction, Psilocybe herrerae is probably potent, but it has not yet been analyzed. The long pseudorhiza delineates this species from most others. See also Psilocybe wassoniorum, macroscopically similar (except for the length of the pseudorhiza) but lacking pleurocystidia.

source - Paul Stamets "Psilocybin Mushrooms of the World"

Pictures at www.mushroomobserver.org

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