Pterocactus neuquensis R.Kiesling, E.Sarnes & N.Sarnes species accepted

Pterocactus monophyllus Klitg., L.P.Queiroz & G.P.Lewis species accepted

Pterocactus michelianus N.Zamora species accepted

Pterocactus valentini var. arnoldianus Backeb. variety synonym

Pterocactus valentini Speg. species accepted

Pterocactus tuberosus var. decipiens (Gürke) W.T.Marshall variety synonym

Pterocactus skottsbergii (Britton & Rose) Backeb. species synonym

Pterocactus reticulatus Kiesling species accepted

Pterocactus pumilus Britton & Rose species synonym

Pterocactus megliolii Kiesling species accepted

Pterocactus kurtzei K.Schum. species synonym

Pterocactus hickenii Britton & Rose species accepted

Pterocactus gonjianii R.Kiesling species accepted

Pterocactus fischeri Britton & Rose species accepted

Pterocactus australis var. arnoldianus Backeb. variety synonym

Pterocactus araucanus A.Cast. species accepted

Pterocactus decipiens Gürke species synonym

Opuntia tuberosa Pfeiff. species synonym

Pterocactus tuberosus (Pfeiff.) Britton & Rose species accepted

Pterocactus kuntzei K.Schum. species synonym

Pterocactus kuntze species accepted

Pterocactus australis (F.A.C.Weber) Backeb. species accepted

Opuntia skottsbergii Britton & Rose species synonym

Opuntia australis F.A.C.Weber species synonym

Opuntia araucana (A.Cast.) Kiessling species synonym

Opuntia valentini (Speg.) Kiessling species synonym

Opuntia tuberosa var. spinosa Pfeiff. variety synonym

Opuntia skottsbergii Britton & Rose ex Skottsb. species synonym

Opuntia platycantha var. gracilior Salm-Dyck variety synonym

Opuntia megliolii (R.Kiesling) Kiessling species synonym

Opuntia kuntzei (K.Schum.) Kiessling species synonym