Newbold, Richard, Sohan De Silva, and Martin Terry. “Correlation of Mescaline Concentrations in Lophophora Williamsii (Cactaceae) With Rib Numbers and Diameter of Crown (U.S.A.)”. Journal of the Botanical Research Institute of Texas 14, no. 1 (July 15, 2020): 103–120. Accessed December 23, 2024. https://journals.brit.org/jbrit/article/view/901.