“…For any new species, it is common practice that novel species of Panaeolus are also characterized using at least the internal transcribed spacer (ITS) region as part of their taxonomical description, as has been done for the recently discovered species P. axfordii , P. plantaginiformis and P. desertorum [ 7 , 108 ]. Numerous DNA extraction protocols exist, while in some studies DNA extraction methods were modified for more efficient DNA extractions to aid identifying mushrooms of hallucinogenic genera based on DNA sequence data [ 61 , 109 ] . Of the 77 known Panaeolus species, sequences of the ITS region are available for only 18 species on Genbank [ 58 ].…”