Psilocybe ruiliensis

Psilocybe ruiliensis is a species of psilocybin mushroom in the family Hymenogastraceae. Described as new to science in 2016, it is found in Yunnan province of southwest China. The species epithet, ruiliensis, is a reference to the location Ruili where the type collections were found. The type specimens were growing solitary to scattered in grasslands in which cows and horses had previously grazed.

Psilocybe ruiliensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Agaricales
Family:	Hymenogastraceae
Genus:	Psilocybe
Species:	P. ruiliensis
Binomial name
Psilocybe ruiliensis T. Ma, X.F. Ling & K.D. Hyde (2016)

Description

• Cap: 10–20 mm (0.39–0.79 in) in diameter; conic to almost plane, with or without umbo or small acutely papillate at the disk; brownish-yellow (often with reddish tinge); hygrophanous and translucently striate when moist, watery brown when wet; sometimes bruising blue when damaged or mature; cortinate white veil and sometimes small scales when young.
• Gills: Yellowish or beige when young, chocolate brown in age (gray-purple or purple tinge), with adnate to subsinuate or adnexed attachment; edges serrulate and slightly wavy.
• Spores: Brown with purple tinge (in water); ellipsoid to subhexagonal; smooth and slightly thick-walled, sometimes containing 1–2 oil drops; 9–11 by 6–7.5 μm.
• Stipe: 27–62 mm (1.1–2.4 in) long, 1.5–3.5 millimetres (0.059–0.138 in) thick; yellow-white to brownish, sometimes bruising bluish when damaged; central or occasionally slightly eccentric; fibrillose; hollow; annulus absent; equal to slightly enlarged bulbous base. Stem base with rhizomorphic white mycelium.
• Odor: Slightly grassy.
• Microscopic features: Larger hexagonal and subrhomboid basidiospores (9.6–12.0 by 6.4–8.4 μm); ventricose-lageniform cheilocystidia and pleurocystidia.

See also

• List of psilocybin mushrooms
• List of Psilocybe species