Opuntia missouriensis var. trichophora Engelm. & J.M.Bigelow in Proc. Amer. Acad. Arts 3: 300. 1856
Opuntia missouriensis var. trichophora in Proc. Amer. Acad. Arts 3: 300. 1856
is basionym for Opuntia polyacantha var. trichophora in Contr. U.S. Natl. Herb. 3(7): 437. 1896
is basionym for Opuntia trichopora in Smithsonian Misc. Collect. 50: 535. 1908
is basionym for Opuntia trichophora in Smithsonian Misc. Collect. 50: 535. 1908