Kathleen Harrison, renowned ethnobotanist and educator, has done extensive fieldwork among Indigenous cultures since the 1970s, specializing in studying plants and fungi used in ritual, healing and art, including traditional psychoactive species and their lore. Co-founder of the non-profit, Botanical Dimensions, and Director of its Ethnobotany Library in Occidental, California, Kat’s fieldwork includes a long relationship with Mazatec healers in Mexico that her daughter, artist/filmmaker Klea McKenna, is making a film about.