McKenna, Dennis: -
Dennis McKenna is an ethnopharmacologist who has studied plant hallucinogens for over forty years. He is the author of many
scientific papers, and co-author, with his brother Terence McKenna, of
The Invisible Landscape: Mind, Hallucinogens, and the I Ching, and
Psilocybin:
Magic Mushroom Grower's Guide. He is a founding board member of the Heffter Research Institute, a non-profit organization focused on the investigation of
the potential therapeutic uses of psychedelic medicines. Dennis currently resides in British Columbia, Canada.