Guzmán et Gaines
|Range of Psilocybe ovoideocystidiata|
|gills on hymenium|
cap is convexor umbonate
|hymenium is adnate|
|stipe is bare|
spore print is blackish-brownto purple
|ecology is saprotrophic|
Psilocybe ovoideocystidiata is a psilocybin mushroom in the section Stuntzae, having psilocybin and/or psilocin as main active compounds. It is closely related to P. subaeruginascens from Java, P. septentrionalis from Japan, and P. wayanadensis from India. This mushroom was first documented by Richard V. Gaines in Montgomery County, Pennsylvania in June 2003. Although it is sometimes confused with Psilocybe caerulipes, it can be distinguished by its rhomboid spores, larger stature, earlier fruiting season and membranous annulus.
From the frequent ovoid both pleuro- and cheilocystidia.
Psilocybe ovoideocystidiata is common in the Ohio river valley. Often found in the woody debris of overflow areas, along rivers and streams, often in man-made mulch. They are most common from April to mid June but they occasionally fruit as late as November. It was first documented in Pennsylvania, it has been found in Kentucky, Ohio, West Virginia, Virginia, Maryland, the District of Columbia, Delaware, New Jersey, Rhode Island, New York, Washington, Oregon, California and Georgia.