Psilocybe mammillata is a rare species of psilocybin mushroom in the family Hymenogastraceae. Said to be described from Jamaica in 1918 by Murrill, who placed it in the genus Astylospora, in 1948, Smith relocated it to Psilocybe and synonymized it with Artylospora cinshonensis (= Psathyra cinchonensis). Its bluish bruising flesh matched the characteristic of the hallucinogenic Psilocybe clade. Its epithet “mammillata” refers to its distinctive nipple-like umbo which often get him confused with Psilocybe cordispora.
Of the seven subpopulations known of this species, six are located in mountain cloud forests of Mexico, Bolivia and Jamaica, and one in Florida, making the Floridian subtropical forest its northernmost distribution limit.
Unfortunately, many of the mountain cloud forests have no conservation programs, making this extremely rare hallucinogenic mushroom most probably an endangered species.
Fortunately, the interest of magic mushroom hunters who consume it for its entheogenic properties, may be a helping factor in the conservation of the strain. Let’s hope this rare one gets cloned!