Pelecyphora robbinsorum (W.H.Earle) D.Aquino & Dan. Sanchez comb. nov.

Cochiseia robbinsorum ≡ Cochiseia robbinsorum W.H.Earle, Saguaroland Bull. 30: 65. 1976. Coryphantha robbinsorum (W.H.Earle) A.D.Zimmerman, Cact. Succ. J. (Los Angeles) 50: 294. 1978. Escobaria robbinsorum (W.H.Earle) D.R.Hunt, Cact. Succ. J. Gr. Brit. 40: 13. 1978. Neobesseya robbinsorum (W.H.Earle) Doweld, Sukkulenty 3: 37. 2000. Type: United States, Arizona, SE Cochise County, rocky hills, 4250 ft [1280 m], 1976, J. Robbins et al. s.n. (holotype: ASU [18455]).