Cylindropuntia whipplei (Engelm. & Bigelow) F.M. Knuth Cylindropuntia whipplei (Engelm. & Bigelow) F.M. Knuth, Kaktus-ABC: 124. 1936 sec. Hunt & al. 2006≡Opuntia whipplei Engelm. & Bigelow in Proc. Amer. Acad. Arts 3: 307. 1856 syn. sec. Hunt & al. 2006