Pterocactus araucanus A.Cast. species accepted

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

Pterocactus fischeri Britton & Rose species accepted

Pterocactus gonjianii R.Kiesling species accepted

Pterocactus hickenii Britton & Rose species accepted

Pterocactus megliolii Kiesling species accepted

Pterocactus michelianus N.Zamora species accepted

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

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

Pterocactus reticulatus Kiesling species accepted

Pterocactus tuberosus (Pfeiff.) Britton & Rose species accepted

Pterocactus valentini Speg. species accepted