Initiative PDX-01 has been filed to decriminalize five substances the measure defines as “psychedelic plant medicines.” Psilocybin mushrooms, mescaline cacti and DMT-containing plants… [15-1-2. No Law Shall Regulate Personal Use or Possesion of Psychedelic Plant Medicines. (a) The City of Portland shall adopt no law prohibiting or regulating the personal use or possession of psychedelic plant medicines…