Opuntia missouriensis var. rufispina Engelm. & J.M.Bigelow in Proc. Amer. Acad. Arts 3: 300. 1856
Opuntia missouriensis var. rufispina in Proc. Amer. Acad. Arts 3: 300. 1856
is basionym for Opuntia polyacantha var. rufispina, Cacti Ariz., ed. 3: 20. 1969