Psilocybe guilartensis

Taxobox
name = "Psilocybe guilartensis"

---

image_width = 250px
regnum = Fungi
divisio = Basidiomycota
classis = Agaricomycetes
ordo = Agaricales
familia = Strophariaceae
genus = Psilocybe
species = "P. guilartensis"
binomial = "Psilocybe guilartensis"
binomial_authority = Guzmán, F. Tapia & Nieves-Riv. mycomorphbox
name = Psilocybe guilartensis
whichGills = adnexed
capShape = conical
capShape2=convex
hymeniumType=gills
stipeCharacter=bare
ecologicalType=saprotrophic
sporePrintColor=purple-brown
howEdible=psychoactive

"Psilocybe guilartensis" is a psilocybin mushroom which has psilocybin and psilocin as main active compounds. It is common in Puerto Rico.

Gaston Guzman placed P. guilartensis in Psilocybe section Brunneocystidiatae due to its blue staining reaction, small thick walled subrhomboid spores and pigmented cystidia. A new species of Psilocybe in the Caribbean with an emendation of Psilocybe guilartensis. Mycologia, 95(6), 2003, pp. 1171–1180. By Gaston Guzman, Fidel Tapia and Florencia Ramirez-Guillen]

Description

*Cap: 1-3 cm diameter, at first to campanulate, expanding to plano-convex with an umbo. Cap surface dark violet brown, translucent-striate near the margin, hygrophanous, fading to tan as it dries. Staining blue-green to black where bruised.
*Gills: Cream color when young, violet brown or chocolate brown in age, with attachment.
*Spores: Dark violet brown, subrhomboid in face view, subellipsoid in side view, thick walled, 6 x 5 um.
*Stipe: Central, equal with subbulbous base, hollow and cylindric, 3 to 8 cm long, 1 to 2 mm thick. Whitish to brown, ornamented with small flattened scales towards the base. The base is covered in tiny yellow fibers which help distinguish this from similar species. Staining blue-green to black where bruised.
*Taste: Farinaceous, sometimes with a slight mustard taste.
*Odor: Farinaceous, sometimes with a slight mustard odor.
*Microscopic features: Pigmented cheilocystidia and pleurocystidia present. Basidia four spored. Clamp connections common.

Distribution and habitat

Grows gregariously in groups, often on disturbed bare clay or moss. Found along hiking trails, in coffee plantations, tropical and subtropical forests, especially in landslide areas. Known only from Puerto Rico and Dominican Republic.

External links

* [http://mushroomobserver.org/7054 Mushroom Observer - Psilocybe guilartensis]
* [http://www.cortland.edu/nsf/7983psil.HTML Psilocybe guilartensis picture]

References