Pileus (Cap): 1.4-3.5 cm broad. Conic to convex to broadly convex, eventually plane in age, typically not umbonate. Colour deep chestnut brown, hygrophanous, fading in drying to pale tan to yellowish brown, even dingy grayish white in drying. Surface viscid when moist from a separable gelatinous pellicle.
Lamellae (Gills): Attachment adnate to adnexed, to slightly subdecurrent in age, light grayish when young, becoming purplish brown with maturity with whitish edges.
Stipe (Stem:) 30-70 mm long by 2-4 mm thick, straight to flexuous, equal to enlarged near the base, longitudinally striate, and adorned with fine fibrils that become bluish when handled. Yellow brown to light tan underneath. Partial veil white, cortinate, copious, leaving fibrillose veil remnants, sometimes a fragile annular zone on the upper regions. Flesh brownish, bruising bluish.
Microscopic features: Spores purplish brown in deposit, subellipsoid, 9-12 by 5.5-7 microns. Basidia 4-, rarely 2-spored. Pleurocystidia absent. Cheilocystidia fusiform to lanceolate, 22-33 by 5.5-7 microns, with an elongated, forking neck, 1-1.5 microns thick at apex.
Season: September to December.
Habitat and Distribution: Fruiting in the Pacific Northwest. Just like P. baeocystis they grow mostly grass, but sometimes in mixed mulch, in soils enriched with deciduous wood debris, in Alder and Willow wood chips and bark mulch, Fir sawdust, in coastal regions, in rhododendron gardens and nurseries, and in flood plains in river estuaries. Michael KuhneMO Occurrence Map
Growth Habit: Scattered to gregarious.
Bruising: Bruising when handled, mostly in the pileus margin but also on the stem and base.
Dosage: 1 large specimen, 2 to 5 small specimens. High in psilocin and low in psilocybin. Loses over 70% or more of their potency in drying.
Other Notes: "I have found stuntzii, baeos, and fibs within a 25' radius. They like old, well kept grass that has weeds" (NeoSporen). Both psilocybin and psilocin (0.05 mg per gram dry weight and 1.4 mg per gram psilocin) were detected by Beug and Bigwood