Historically, 28 species of Psilocybe have been reported from Canada, with the oldest report dating back to 1913. Of these, P. corneipes has been transferred to Mythicomyces corneipes, two (P. rhombispora, P. subfimetaria) have been synonymized under earlier names, P. callosa has been redetermined as another species, and two reports (P. merdaria, P. pratensis) are doubtful. With the report of
... [Show full abstract] three new records from British Columbia (P. angustispora, P. apellicuhsa, P. subcoprophila), the total number of verified Psilocybe species recognized in Canada now stands at 24, with the highest number of taxa concentrated in British Columbia. Eleven of the known taxa of Psilocybe in Canada are hallucinogenic, with P. quebecensis the only endemic species, P. semilanceata common throughout the country Canada, and P. pelliculosa apparently widespread in British Columbia.