Opuntia triacantha (Willd.) Sweet, Hort. Brit. 1: 172. 1826 Opuntia triacantha (Willd.) Sweet, Hort. Brit. 1: 172. 1826is new combination for Cactus triacanthos Willd., Enum. Pl., Suppl.: 34. 1814Taxon for this nameOpuntia triacantha (Willd.) Sweet, Hort. Brit. 1: 172. 1826