Echinopsis nigrispina (Lem.) Walp., Repert. Bot. Syst. 2: 324. 1843 Echinopsis nigrispina (Lem.) Walp., Repert. Bot. Syst. 2: 324. 1843is new combination for Echinonyctanthus nigrispinus Lem., Cact. Gen. Sp. Nov.: 85. 1839Taxon for this nameEchinopsis nigrispina (Lem.) Walp.