Sulfuric head (Psilocybe mairei) photo and description

Sulfur head (Psilocybe mairei)

  • 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 mairei (Sulfur head)


  • Hypholoma cyanescens

  • Geophila cyanescens

Sulfuric head (Hypholoma cyanescens)

Collection time: August - end of December.

Location: Individually or in small groups, on fallen trees, logs and in damp grass.


Dimensions: 25-50mm ∅.

Shape: at a very young age - conical, then bell-shaped or chest-shaped, at the end flat or concave upward.

Color: yellow if dry, chestnut if wet. Blue spots on damaged areas.

Surface: smooth and firm if dry, slightly sticky if damp, brittle in old age.

Edge: After the hat is flat, the edge grows further and curls.


Dimensions: 25-100mm high, 3-6mm in ∅.

Shape: evenly thick and slightly bent, noticeable thickening in the lower quarter, often remnants of the skin.

Color: almost white on top, amber below, light blue tint when dry.

Surface: fragile with silky fibers.

Spore-bearing layer

Color: first cinnamon-colored, then reddish-brown with black-purple spots (from ripe spores that fall).

Location: not tight, adnat.

ACTIVITY: very high.