Opuntia tortispina Engelm. & Bigelow in Proc. Amer. Acad. Arts 3: 293. 1856 Opuntia tortispina Engelm. & Bigelow in Proc. Amer. Acad. Arts 3: 293. 1856Taxon for this nameOpuntia tortispina Engelm. & Bigelow in Proc. Amer. Acad. Arts 3: 293. 1856