Pilosocereus piauhyensis subsp. mucosiflorus (Buining & Brederoo) P.J.Braun & Esteves in Succulenta (Netherlands) 74: 13
Pilosocereus piauhyensis subsp. mucosiflorus in Succulenta (Netherlands) 74: 134. 1995
is new combination for Pseudopilocereus mucosiflorus in Kakteen And. Sukk. 28: 203. 1977