homotypic synonyms:
Cereus macrogonus species Salm-Dyck; Trichocereus macrogonus species (Salm-Dyck) Riccob.;
protologue: I.O.S. Bull. 3: 96 (1974)
6 371826 Echinopsis macrogona (Salm-Dyck) Friedrich & G.D.Rowley [125 226147 Cereus macrogonus Salm-Dyck]
C.F.P. von Martius, A.G. Eichler, I. Urban, Fl. Bras., vol. 4(2): fasicle 108, (Balanophoreae; Aristolochiaceae; Rafflesiaceae; Nymphaeaceae; Cactaceae): t. 40 (1890)
Cereus macrogonus species Salm-Dyck; Trichocereus macrogonus species (Salm-Dyck) Riccob.;
protologue: I.O.S. Bull. 3: 96 (1974)
6 371826 Echinopsis macrogona (Salm-Dyck) Friedrich & G.D.Rowley [125 226147 Cereus macrogonus Salm-Dyck]C.F.P. von Martius, A.G. Eichler, I. Urban, Fl. Bras., vol. 4(2): fasicle 108, (Balanophoreae; Aristolochiaceae; Rafflesiaceae; Nymphaeaceae; Cactaceae): t. 40 (1890)