Opuntia polyacantha var. hystericina (Engelm. & J.M.Bigelow) B.D.Parfitt variety accepted

Opuntia erinacea var. ursina (F.A.C.Weber) Parish ex Jeps. variety synonym

Opuntia rhodantha K.Schum. ex Rehnelt species synonym

Opuntia diploursina Stock, N.Hussey & Beckstrom species synonym

Opuntia polyacantha subsp. erinacea (Engelm. & J.M.Bigelow) Guiggi subspecies synonym

Opuntia rhodantha K.Schum. species synonym

Opuntia hystricina Engelm. & J.M.Bigelow species synonym

Opuntia polyacantha var. hystracina (Engelm. & J.M.Bigelow) B.D.Parfitt variety accepted

Opuntia hystracina Engelm. & J.M.Bigelow species synonym

Opuntia polyacantha var. polyacantha variety accepted

Opuntia erinacea var. erinacea variety synonym

Opuntia erinacea var. xanthostemma (K.Schum.) L.D.Benson variety synonym

Opuntia erinacea var. ursina (F.A.C.Weber) Parish variety synonym

Opuntia erinacea var. rhodantha (K.Schum.) L.D.Benson variety synonym

Opuntia erinacea var. paucispina Dunkle variety synonym

Opuntia erinacea var. hystricina (Engelm. & J.M.Bigelow) L.D.Benson variety synonym

Opuntia xerocarpa Griffiths species synonym

Opuntia xanthostemma K.Schum. species synonym

Opuntia trichophora (Engelm. & J.M.Bigelow) Britton & Rose species synonym

Opuntia rutila Nutt. species synonym

Opuntia rhodantha f. xanthostemma (K.Schum.) Rehder form synonym

Opuntia rhodantha var. spinosior Boissev. & C.Davidson variety synonym

Opuntia polyacantha var. trichophora (Engelm. & J.M.Bigelow) J.M.Coult. variety accepted

Opuntia polyacantha var. nicholii (L.D.Benson) B.D.Parfitt variety accepted

Opuntia polyacantha var. hystricina (Engelm. & J.M.Bigelow) B.D.Parfitt variety accepted

Opuntia polyacantha var. erinacea (Engelm. & J.M.Bigelow) B.D.Parfitt variety accepted

Opuntia polyacantha var. arenaria (Engelm.) B.D.Parfitt variety accepted

Opuntia missouriensis var. trichophora Engelm. & J.M.Bigelow variety synonym

Opuntia hystricina var. ursina (F.A.C.Weber) Backeb. variety synonym

Opuntia hystricina var. nicholii (L.D.Benson) Backeb. variety synonym

Opuntia hystricina var. bensonii Backeb. variety synonym

Opuntia polyacantha subsp. hystricina (Engelm. & J.M.Bigelow) Guiggi subspecies synonym

Opuntia polyacantha subsp. arenaria (Engelm.) Guiggi subspecies synonym

Opuntia polyacantha f. trichophora (Engelm. & J.M.Bigelow) Guiggi form synonym

Opuntia polyacantha subsp. nicholii (L.D.Benson) M.H.J.van der Meer subspecies synonym

Opuntia missouriensis f. trichophora (Engelm. & J.M.Bigelow) Schelle form synonym

Opuntia erinacea Engelm. & J.M.Bigelow species synonym

Opuntia arenaria Engelm. species synonym

Opuntia nicholii L.D.Benson species synonym

Opuntia ursina F.A.C.Weber species synonym

Opuntia rhodantha var. xanthostemma (K.Schum.) Rehder variety synonym