Matucana aurantiaca
Matucana aurantiaca in Krainz, Kakteen 54: CVb. 1973 sec. Hunt 20161
- ≡Echinocactus aurantiacus in Bot. Jahrb. Syst. 50(2-3, Beibl. 111): 23. 1913 syn. sec. Hunt 20161
- ≡Arequipa aurantiaca in Kakteenkunde 1939: 77. 1939 syn. sec. Hunt 20161
- ≡Borzicactus aurantiacus in Cact. Succ. J. (Los Angeles) 29: 47. 1957 syn. sec. Hunt 20161
- ≡Submatucana aurantiaca, Cactaceae 2: 1061. 1959 syn. sec. Hunt 20161
- Holotype: Peru, Cajamarca: “near San Pablo” [protologue, translated]; on rocks, alt. 2200 – 2400 m, 29 Apr 1904, A. Weberbauer 3846 (B, in spirit: B 810006865)
- =Borzicactus calvescens in Cact. Succ. J. (Los Angeles) 29: 112. 1957 syn. sec. Kew WCVP (2019)2
- ≡Submatucana calvescens, Cactaceae 2: 1061. 1959 syn. sec. TROPICOS 1988+3
- ≡Borzicactus aurantiacus var. calvescens in Natl. Cact. Succ. J. 26: 10. 1971 syn. sec. Hunt 20164
- ≡Matucana calvescens in Krainz, Kakteen: CVb. 1973 syn. sec. TROPICOS 1988+3
- =Echinopsis ceroniana in Succulentopi@ 14: 19. 2015 syn. sec. Kew WCVP (2019)5