McKennaii - Magic Mushroom Grow Kit He was an American ethnobotanist, lecturer and author who is in part … Psilocybe Mckennaii Its highly philosophical trip with a strong visual aspect makes it a treat … Shop now McKennaii Psilocybe Cubensis strain Psilocybe Mckennaii – Psychedelics Pharma Online Buy McKennaii Psilocybe Cubensis | Buy McKennaii Psilocybe Cubensis in CANADA. McKennaii is a relatively new strain of cubenses and is one of the most powerful species. How do psychedelic mushrooms feel?McKennaii Psilocybin Cubensis Shrooms are known for their profound effects on consciousness and perception. There is a rumor that this Psilocybe cubensis variety is even more potent than the popular and famous Copelandia cyanescens (also known as the “Hawaiian”). Stem: 40-100 + mm, small to meduim in size. McKennaii Psilocybe Cubensis strain