Revised January 24, 2005; September 29, 2007; April 17, 2013; and March 15, 2017.
Copyright 1998-2017 by John W. Allen.

Psilocybe stuntzii Guzmán and Ott

Psilocybe stuntzii Guzmán and Ott.

Cap: 1.5-5 cm broad. Obtusely conic, expanding to convex-umbonate or flat with age. Margin is striate and translucent when moist. Hygrophanous. Dark chestnut brown while lighter towards the center. Olive-greenish at times, fading to a pale yellowish brown or pale yellow. Viscid when moist from a gelatinous pellicle.

Gills: Adnate to adnexed, close to sub distant and moderately broad.

Stem: 30 to 60 mm long x 2-4 mm thick. Enlarged at base. remnants of a veil remain and are usually bluish from natural injury when the cap opens. With a whitish pith. Staining blue to blue-green where injured.

Spores: 9-12 x 55-8.3 x5-7.7 µ.

Sporeprint: Dark purplish grayish brown.

Habitat: Growing gregarious to subcespitose clusters and clumps in conifer wood chips and bark mulch (alder wood), in soils rich in woody debris, and in new lawns of freshly laid sod.

Distribution: From North of San Francisco to Eugene, Oregon to British Columbia. This species is common in lawns and grassy areas such as parks, fields, or any newly mulched garden area throughout the western region of the Pacific Northwest.

Season: From late July through September in lawns and grassy areas and from late September through December in mulched garden beds. This species sometimes occurs all year long depending on warmer el nino weather conditions in the PNW.

Dosage: 20 to 30 fresh specimens, 1/3 fresh ounce or 1-3 dried grams.

Comment: There was a time when this mushroom appeared in over 40 percent of all new lawns and mulched-in garden in areas in the Puget Sound region of the Pacific Northwest. Due to a disappearance of mixed composts of soils rich in nitrogen and phosphates and came from pasturelands in the south of Seattle in the Tukwilla-Kent-Auburn areas the region to the northside of Seattle in the Woodinville area where Meadow Gold Farms provides compost to produce fresh sod from the Bassett and Western Landscapers. Currently this species is now restricted to appearing sporadically in certain well fertilized and manicured new lawns in the suburbs of the region. It is also very common in wood chips, preferably alder in the colder weather months of the year. Recently, a species known to occur in the midwest to east coast of America, Psilocybe ovoideocystidiata, was discovered in mass quantities fruiting along the West Coast of America. It has been misidentified here as Psilocybe stuntzii. Both are macroscopically similar so many collections apparently are similar but could be one or the other species. One noticeable different between Psilocybe stuntzii and Psilocybe ovoideocystidiata is that the annulus (veil remnants) of Psilocybe ovoideocystidiata is that it's ring stays where it was when the cap opens but the stipe keeps growing taller leaving the ring fdown the stem. Whereas when the cap pf Psilocybe stuntzii opens, the veil remains situated close to the opened cap.
About Psilocybe stuntzii? I have observed this species growing all year long in the Seattle, Washington area. On one occasion in 1990, Dr. Jochen Gartz of the University of Leipzig, Germany and I both observed what may have been as much as a 50 pound patch of Psilocybe stuntzii fruiting on a cold October morning in a Eugene, Oregon parking lot garden deviders at the Valley River Shopping Center in front of the Bon Marche along the Willamette river across from Skinners Butte Park in Eugene. When and if there is a light winter, the 'blue ringer's will appear throughout the year. A related species Psilocybe fimetaria is very close macroscopically to Psilocybe stuntzii, but the former which has a distinct profound tiny nipple fruits only in manure in pastures and sometimes lawns and mulched gardens, while the latter species, Psilocybe stuntzii fruits only in manured soils, grasses, and in lawns at public places such as parks, along sidewalk condos, restaurants and publicbuildings, yet also fruits in mulched beds and never directly from manure. This mushroom was also photographed growing out of gravel as can be seen in some images posted in the wood chip section of this species. One last note is that it was only recently reported on the discovery of Psilocybe ovoideocystidiata along the west coast of America and at least as far west as Sacramento, California. For more info on the occurrence of Psilocybe ovoideocystidiata on the west coast See: Allen, Shhanonth, and Molter:

Psilocybe Stuntzii Piture Gallery<

Lawn Varieties of Psilocybe stuntzii
Wood Chip and Beauty Bark Mulch Varieties of Psilocybe stuntzii
Psilocybe stuntzii var. tenuis (according to Bob Harris)
Picked and/or Dried Specimens of Psilocybe stuntzii
Bluing in Psilocybe stuntzii

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