PES stands for Pacifica Exotica Spora, a company that took spores from wild mushrooms and isolated/domesticated until we have the product we have today! Most varieties are named after their location or the person who discovered them, this is an outlier! There are no reports of wild cubensis growing in Hawaii because of a few factors (lack of mammals and isolated location to name a few). The variety got it’s name because the company, Pacifica Exotica Spora, was based in Hawaii! No one except the few who isolated this variety knows the true origin of these spores!