Krainzia densispina (J.M.Coult.) Doweld in Sukkulenty 3: 43. 2000 Krainzia densispina (J.M.Coult.) Doweld in Sukkulenty 3: 43. 2000is new combination for Cactus densispinus J.M.Coult. in Contr. U.S. Natl. Herb. 3(2): 96–97. 1894Taxon for this nameKrainzia densispina (J.M.Coult.) Doweld