Peniocereus occidentalis Bravo ex S.Arias, U.Guzmán & Gama in Cact. Suc. Mex. 37: 75. 1992 Peniocereus occidentalis Bravo ex S.Arias, U.Guzmán & Gama in Cact. Suc. Mex. 37: 75. 1992Taxon for this namePeniocereus occidentalis Bravo ex S.Arias, U.Guzmán & Gama