Psilocybe furtadoana

Psilocybe furtadoana Guzmán

Macroscopic feat.:
  • Cap/Pileus: About 15 mm diam., subcampanulate to papillate, smooth, transparent-striate when moist, lubricous, hygrophanous, dark reddish brown to ochraceous or stramineo.
  • Gills/Lamellae: Subadnate, dark violet brown with whitish edges.
  • Stem/Stipe: About 35 x 1 mm, cylindrical, uniform, hollow, reddish brown towards the base, covered with whitish floccose fibrils of the veil. Veil white and fugacious.
  • Context: Whitish, fleshy in the pileus, brownish and fibrillose in the stipe
  • Odor: And taste farinaceous, slightly blue-staining when cut.

Microscopic feat.:
  • Basidio/Spores: (4.5-) 5.5-6.6 (-7) x (3.8-) 4.4-4.9 (-5.5) x 3.8-4.2 µm, subrhomboid frontally, subelliptic laterally, yellowish brown, smooth, thick walled, with a broad germ pore.
  • Basidia: 10-13.2 x 4.4-5.5 µm, four-spored, hyaline, subvesiculose.
  • Pleurocistidia: None.
  • Cheilocystidia: 11-18 x 4.4-6.6 µm, abundant, hyaline or chocolate brown toward the base, bottle shaped or sublageniform, some fusoid-ventricose.
  • Subhymenium: With elongate parallel hyphae, with reddish brown irregularly distributed pigment.
  • Trama: Regular, colored like the subhymenium or hyaline, with hyphae up to 6 µm diam.
  • Epicutis: With subgelatinous reddish brown to hyaline hyphae, around 4 µm diam.
  • Hypodermium: Gradually hyaline, with hyphae thin walled, 5-12 µm diam. Clamp connections present.

Habitat: Solitary on soil in open forest of Araucaria brasiliana with Podocarpus. Known only from the type locality.

Studied material: BRAZIL , 5 km West of Campos de Jardao, State of Sao Paulo, March 8, 1971, Guzmán 8918 (Holotype SP; Isotype ENCB).

Discussion: This species is close to Psilocybe brasiliensis but the absence of pleurocystidia, the structures of the subhymenium, as well as the size of the spores and cheilocystidia separate it clearly from the latter. This species is named in honor of Dr. J.S. Furtado who helped the author collected this and other fungi in Brazil.

source - [7 (2): 242-243]

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