Created October 18, 2007; and Revised April 10, 2013.
Copyright 1998-2013 by John W. Allen.

Psilocybe ovoideocystidiata Guzmán, Gaines and Ramírez-Gullién


Psilocybe ovoideocystidiata Guzmán, Gaines and Ramírez-Gullién.
Photo: Photo: Courtesy of Shroomy Dan.


Cap: (10-) 15-25 (-45) mm diam, convex to subumbonate, lubricous to subviscid, glabrous, translucent-striate at the margin, hygrophanous, orangish-brown to yellowish-brown, sometimes becoming pallid white when dry and with age.

Gills: Subadnate, brownish pale to dark brownish-niolaceous, unifrom in color.

Stem: (15-) 25-60 (-90) X (1-) 2-5 (-7) mm, smooth above to floccose-scaly below, cylindrical, equal, womewhat bulbous, base sometimes hypogeous, whitish, with irregular pale ochre or violaceous tones below or pale reddish-brown above. Hollow, with white mycellium at the base. Annulus membraneous, white evanescent and context is whitish to ochrerous pale, bluing, odor farinaceous.

Spores: (7-) 8-9 (-12) X (5.5) 6-7 (-8.5)µ. Rhomboid or subrhomboid in face view, thick-walled.

Sporeprint: Violaceous dark.

Habitat: Gregarious on wood or wood debris, in trails or places with herbaceous plants in deciduous forest. Allong streams and riverbanks and in flooded plains areas.

Distribution: When Guzmán et al. wrote the paper, they were only aware of its occurrence in Pennsylvania. Presently it has since been collected in West Virginia and Ohio.

Season: Spring to Summer (mid April to late April through August-September.

Dosage: Probably very similar to P. cyanescens but maybe a little less potent.

Comment:Psilocybe ovoideocystidiata is described as a new bluing species from Pennsylvania, U.S.A. It belongs to section Stuntzii Guzmán of genus Psilocybe for it's subrhomboid, thick-walled spores and its caerulescent basidioma with annulus. It is macroscopically very similar to Psilocybe caerulipes, a species that shares a similar habitat in sandy soils along streams and riverbanks on the east coast of the United States west to Michigan in the northern part of America. Only recently it has now been reported all along the West Coast of America. As much as ten miles inland from the Pacific Coast. Common in Washington, Oregon and the Bay Area of San Francisco, California. Some recent DNA studies show that several herbarium collections of Psilocybe stuntzii were in fact Psilocybe ovoideocystidiata and the species also appears to be common in Southern regions of British Colombia, Canada (Borovicka, Rockefeller and Peter G. Werner, 2012).

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