Cylindropuntia thurberi (Engelm.) F.M. Knuth Cylindropuntia thurberi (Engelm.) F.M. Knuth, Kaktus-ABC: 124. 1936 sec. Hunt 2016≡Opuntia thurberi Engelm. in Proc. Amer. Acad. Arts 3: 308. 1856 syn. sec. Guzmán & al. 2003