Lophophora koehresii Lophophora echinata var. diffusa Lophophora diffusa subsp. diffusa Lophophora diffusa var. koehresii Lophophora williamsii var. diffusa Lophophora williamsii var. koehresii Peyotl diffusus Lophophora diffusa subsp. viridescens Lophophora viridescens Lophophora diffusa subsp. kubesae Lophophora diffusa var. swobodaiana Peyotl viridescens Peyotl koehresii Lophophora williamsii subsp. diffusa
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024