San Isidro (Psilocybe cubensis) photo and description

San Isidro (Psilocybe cubensis)

  • Department: Basidiomycota (Basidiomycetes)
  • Subdivision: Agaricomycotina (Agaricomycetes)
  • Class: Agaricomycetes (Agaricomycetes)
  • Subclass: Agaricomycetidae (Agaricomycetes)
  • Order: Agaricales (Agaric or Lamellar)
  • Family: Hymenogastraceae (Hymenogastric)
  • Genus: Psilocybe (Psilocybe)
  • Species: Psilocybe cubensis (San Isidro)
    Other names for the mushroom:

  • Psilocybe Cubensis


  • San Isidro

  • Psilocybe Cuban

  • Stropharia cubensis

San Isidro

Psilocybe cubensis is a species of mushroom belonging to the genus Psilocybe of the Strophariaceae family. Contains psychoactive alkaloids psilocybin and psilocin.

Deposit: southern USA, Central America, subtropical regions, on manure. We grow artificially at home on a culture substrate.


Sizes: 10 - 80 mm ∅.

Color: pale yellowish, brownish in old age.

Shape: first cone-shaped, then bell-shaped in old age, convex at the end (the end is bent up).

Surface: dirty, smooth. The pulp is strong, whitish, blue when damaged.


Sizes: 40 - 150 mm long, 4 - 10 mm in ∅.

Shape: evenly thick, stronger at the base.

Color: white, blue when damaged, dry, smooth, white ring (remnants of Velum partiale).

Spore-bearing layer

Color: gray to gray-violet, whitish edges.

Location: from adnat to adnex.

Spores: purple-brown, 10-17 x 7-10 mcm, elliptical to oval, thick-walled.

ACTIVITY: Uniform. Very high.

According to the list of narcotic drugs, fruiting bodies of any kind of mushrooms containing psilocybin and (or) psilocin are considered a narcotic drug and are prohibited from circulation on the territory of the Russian Federation. The collection, consumption and sale of Psilocybe cubensis fruit bodies are prohibited in other countries as well.

However, spores of Psilocybe cubensis are not prohibited, but they can only be acquired or distributed for scientific research, otherwise it could be classified as preparation for a crime. But no laws regulate this process both on the part of the seller and on the part of the buyer, as a result of which disputed prints are freely available both in the Russian Federation and in other countries.

The legality of the mycelium is ambiguous. On the one hand, it is not a fruiting body, but on the other hand, it contains psychoactive substances.

Similar species:

  • Psilocybe fimetaria has a noticeable white blanket residue on the edges of the cap and grows on horse manure.
  • Conocybe tenera with brown mature blades.
  • Some species of the genus Paneolus (Panaeolus).

All of these mushrooms are inedible or also have a hallucinogenic effect.