Place of Publication
Succulenta (Netherlands) 1: 3 (1962b)
References
-
Ritter (1962b)
Ritter , F. 1962b. Pyrrhocactus dimorphus Ritter sp. nov. Succulenta (Netherlands) 1: 2-5
Pyrrhocactus dimorphus
Eriosyce spinosior
(F.Ritter) P.C.Guerrero & Helmut Walter
Eriosyce heinrichiana
(Backeb.) Katt.
Succulenta (Netherlands) 1: 3 (1962b)
Ritter , F. 1962b. Pyrrhocactus dimorphus Ritter sp. nov. Succulenta (Netherlands) 1: 2-5