Pseudoespostoa melanostele (Vaupel) Backeb. in Kakteen-Freund 1: 52. 1933 Pseudoespostoa melanostele (Vaupel) Backeb. in Kakteen-Freund 1: 52. 1933is new combination for Cephalocereus melanostele Vaupel in Bot. Jahrb. Syst. 50(2-3, Beibl. 111): 12–13. 1913Taxon for this namePseudoespostoa melanostele (Vaupel) Backeb.