"Abstract- A memeber of the family Orchidacea, Oncidium cebolleta, is used by the Tarahumara Indians of northern Mexico as a temporary replacement for peyote. We have found it to contain the known compounds: 2,7-dihydroxy-3,4,6-trimethoxyphenanthrene; 2,7-dihydroxy-3,4,6-trimethoxy-9,10-dihydrophenanthrene; 2,3-dihydroxy-4,7,8-trimethoxyphenanthrene; and the new compounds: 2,7-dihydroxy-3,4-dimethoxyphenanthrene; and 2,7-dihydroxy-4,8-dimethoxyphenanthrene."