Haageocereus decumbens f. spinosior (Backeb.) Krainz, Kakteen 31: C Va. 1965 Haageocereus decumbens f. spinosior (Backeb.) Krainz, Kakteen 31: C Va. 1965is new combination for Haageocereus decumbens var. spinosior Backeb. in Cact. Succ. J. (Los Angeles) 23(2): 47. 1951Taxon for this nameHaageocereus decumbens f. spinosior (Backeb.) Krainz