Psilocybe physaloides

Psilocybe physaloides (Bull.) Quél.

Psilocybe montana (Pers.) Kumm. 1871
Psilocybe physaloides (Bull. ex. Merat) Quelet
Psilocybe caespitosa Murrill
Psilocybe atrorufa sensu auct.

probably nonactive

Macroscopic feat.:
  • Cap/Pileus: 0.5-2.5 cm. Convex to slightly subumbonate at first, soon expanding to broadly convex to nearly plane, often with an undulating margin and subumbonate. Surface smooth, viscid when moist and translucent-striate along the margin, which can be decorated with fibrillose remnants of the partial veil. Chestnut brown to reddish brown, lighter along the margin, hygrophanous, fading in drying to straw yellow or dingy yellow.
  • Gills/Lamellae: Attachment adnate to adnexed, or sinuate. Dingy vinaceous brown, becoming dark purplish brown with spore maturity.
  • Stem/Stipe: 15-50 mm long by 1-1.5 mm thick, typically enlarging towards the apex, then narrowing, and enlarging at the base. Rigid, hollow, and covered with patches of fine grayish fibrils, darkening upwards. Partial veil cortinate, deteriorating with age and leaving remnants.

Microscopic feat.:
  • Basidio/Spores: Violet blackish brown in deposit, subrhomboid in face view, subellipsoid in side view, 6-8 by 4-5.5 µm. Pale yellowish brown to tan with spore maturity.
  • Basidia: 4-spored.
  • Pleurocistidia: Absent.
  • Cheilocystidia: 16-28 (33) by 4-7 µm, fusoid to sublageniform with short necks 3.3-4.4 µm thick.

Habitat: Solitary to gregarious, sometimes subcespitose in disturbed soils, soils rich with woody debris, often at field-forest (conifer) interfaces. Common in Europe, also reported from Canada, Greenland, and the northern United States, including Alaska. This mushroom has been collected as far south as Santa Barbara. Often fruits in the summer through early fall.

Comment: Not known to be active; not yet analyzed. The silvery sheath of fibrils from a darkening base is a feature that stands out for this mushroom, and is reminiscent of Psilocybe crobula, Psilocybe inquilina and to a lesser degree Psilocybe montana.

source - Paul Stamets "Psilocybin Mushrooms of the World"

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© psilosophy 2001-2022