 Fourteen members of "Gymnopilus" contain psilocybin, although their bitter taste often deters recreational users.These species include "G. aeruginosus", "G. braendlei", "G. cyanopalmicola", "G. intermedius", "G. junonius", "G. luteofolius", "G. luteoviridis", "G. luteus", "G. purpuratus", "G. subearlei", "G. subpurpuratus", "G. validipes" and "G. viridans".Subspecies of "G. junonius" from Japan are reported to contain psilocybin, while some western North American members are inactive.