Echinocactus uruguayensis f. depressus Osten in Anales Mus. Hist. Nat. Montevideo, ser. 2, 5 (1): 59. 1941 Echinocactus uruguayensis f. depressus Osten in Anales Mus. Hist. Nat. Montevideo, ser. 2, 5 (1): 59. 1941Taxon for this nameEchinocactus uruguayensis f. depressus Osten