Opuntia missouriensis var. microsperma Engelm. in Proc. Amer. Acad. Arts 3: 300. 1856 Opuntia missouriensis var. microsperma Engelm. in Proc. Amer. Acad. Arts 3: 300. 1856Taxon for this nameOpuntia missouriensis var. microsperma Engelm.
