Classification
Kingdom: Plantae (2715)
Phylum: Tracheophyta (2630)
Class: Magnoliopsida (2217)
Order: Caryophyllales (114)
Family: Cactaceae (20)(family description)
Genus: Pilosocereus (4)
Epithet: gounellei (F.A.C.Weber ex K.Schum.) Byles & G.D.Rowley (1)
gounellei => in honor of Pierre-Émile Gounelle (1850-1914), French entomologist and naturalist