Corynopuntia robertsii (Rebman) Bulot & Solichon Corynopuntia robertsii (Rebman) Bulot & Solichon, Cact. Succ. 1: 65. 2009 sec. Hunt 2016≡Grusonia robertsii Rebman in Madroño 53: 278. 2006 syn. sec. Hunt 2016