Haageocereus pseudomelanostele (Werderm. & Backeb.) Backeb., Kaktus-ABC: 209. 1936 ["1935"] Haageocereus pseudomelanostele (Werderm. & Backeb.) Backeb., Kaktus-ABC: 209. 1936 ["1935"]is new combination for Cereus pseudomelanostele Werderm. & Backeb., Neue Kakteen: 74. 1931Taxon for this nameHaageocereus pseudomelanostele (Werderm. & Backeb.) Backeb.