Cephalocereus senilis (Haw.) Pfeiff. in Allg. Gartenzeitung 6: 142. 1838 Cephalocereus senilis (Haw.) Pfeiff. in Allg. Gartenzeitung 6: 142. 1838is new combination for Cactus senilis Haw. in Philos. Mag. J. 63: 41. 1824This name is not assigned to any taxon.