Pilosocereus armatus (Otto ex Pfeiff.) A.R.Franck in Willdenowia 51: 264. 2021 Pilosocereus armatus (Otto ex Pfeiff.) A.R.Franck in Willdenowia 51: 264. 2021is new combination for Cereus armatus Otto ex Pfeiff., Enum. Diagn. Cact.: 81. 1837Taxon for this namePilosocereus armatus (Otto ex Pfeiff.) A.R.Franck in Willdenowia 51: 264. 2021