Brittonrosea pentacantha (Lem.) Speg. in Anales Soc. Ci. Argent. 96: 69. 1923 Brittonrosea pentacantha (Lem.) Speg. in Anales Soc. Ci. Argent. 96: 69. 1923is new combination for Echinocactus pentacanthus Lem., Cact. Aliq. Nov.: 27. 1838Taxon for this nameBrittonrosea pentacantha (Lem.) Speg.