Cylindropuntia alcahes (F.A.C. Weber) F.M. Knuth Cylindropuntia alcahes (F.A.C. Weber) F.M. Knuth, Kaktus-ABC: 127. 1936 sec. Hunt 2016≡Opuntia alcahes F.A.C. Weber in Bull. Mus. Hist. Nat. (Paris). 1: 321. 1895 syn. sec. Guzmán & al. 2003