Psilocybe heimii

Psilocybe heimii Guzmán (1978)



Macroscopic feat.:
  • Cap/Pileus: 15-35 mm diam., convex to subumbonate or subcampanulate, even but translucent-striate at the margin when moist, sometimes subrimose with age. glabrous with lobed to irregular margin, subviscid, dark brown to brownish-yellow, hygrophanous, context is pliant, whitish and thin in the pileus and staining blue when handled.
  • Gills/Lamellae: Adnate to subadnate, dark brown-violet with whitish edges.
  • Stem/Stipe: 50-80 x 1.5-2.5 (-4) mm. Equal, hollow, whitish to brownish or reddish and covered with small silky whitish fibrils. Veil thin fine silky fibrils on the stipe turning evanescent.

Microscopic feat.:
  • Basidio/Spores: (5-) 6-6.5 (-7.7) x 4.9-6.5 (-7) x 3.3-4 µ Rhomboid or subglobose in and subellipsoid in the side with a short basal appendage and with a narrow germ pore. Sporeprint purple-brown violet in deposit.

Habitat: Solitary or in small groups on humus or muddy soil in deciduous forests of Liquidambar-Quercus at 500-1400 m elevation.

Distribution: Known only from the subtropical forests of Mexico.

Season: Fruiting in the summer months of June-August.

Dosage: Unknown.

Comment: Pileus, stipe and context staining green-blue to blackish when bruised. This species was named in honor of French mycologist Roger Heim, who along with Dr. Wasson contributed important studies concerning the sacred mushrooms of Mexico.

source - www.mushroomjohn.org

Pictures at www.mushroomobserver.org

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