The psychedelic mushroom formerly known as Stropharia cubensis was reclassified into the genus Psilocybe by mycologist Rolf Singer and subsequently this classification was supported by modern phylogenetic analyses based upon DNA sequence comparison.
Psilocybe, previously known as Stropharia cubensis, underwent a change in classification due to the work of mycologist Rolf Singer, which has been confirmed by recent studies using DNA sequencing for phylogenetic analysis.