Psilocybe graveolens

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Psilocybe graveolens
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Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Strophariaceae
Genus: Psilocybe
Species: P. graveolens
Binomial name
Psilocybe graveolens
peck
Psilocybe graveolens
Mycological characteristics
gills on hymenium
32px 32px

cap is convex

or umbonate
32px hymenium is adnexed
32px stipe is bare
32px spore print is purple-brown
32px ecology is saprotrophic
32px edibility: psychoactive

Psilocybe graveolens is an extremely rare psilocybin mushroom in the section Zapotecorum, which has psilocybin and psilocin as main active compounds, discovered in the salt marshes or "meadows" of Hackensack, New Jersey. This mushroom is known for its strong and persistent odor.

It is in the section Zapotecorum; other members of this section include Psilocybe angustipleurocystidiata, Psilocybe argentipes, Psilocybe collybioides, Psilocybe kumaenorum, Psilocybe muliercula, Psilocybe pintonii, Psilocybe subcaerulipes and Psilocybe zapotecorum.

Etymology

The species name means “strongly smelling”: Latin gravis “heavy” and olens participle present of olere “smell”.

Description

  • Cap: (1)2 — 3(4) cm in diameter, convex to subumbonate, umbonate or with a slight depression, glabrous, even to slightly striate at the margin, hygrophanous, brownish to orange brownish, fading to golden yellow to whitish, sometimes with a dark green hue. Flesh whitish to pallid brownish, with a strong unfavorable odor.
  • Gills: Adnexed, close, yellowish brown to chocolate brown, edges sometimes lighter.
  • Spore Print: Dark purple brown.
  • Stipe: (2)4 — 6 cm x 2 — 5 mm, equal or slightly expanding at the base to subulbous, white to brownish, with dark greenish or violaceous tones. stuffed to hollow, fibrillose, with a soon disappearing evanescent annulus, rhizomorphic strands attached to the base.
  • Taste: Farinaceous
  • Odor: Farinaceous
  • Microscopic features: Spores (7)7.5 — 9.5(10.5) µm x (3.7)4.5 — 5.2(6) µm, pleurocystidia and cheilocystidia present. Basidia 4-spored.

Distribution and habitat

Psilocybe graveolens is found growing cespitose to gregarious on rich loam of salt marshes or "meadows" in Hackensack, New Jersey, in November.

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