Backebergia in Anales Inst. Biol. Univ. Nac. México 24: 230. 1954 sec. Franco-Estrada & al. 2021
Segregated from Pachycereus by Franco-Estrada & al. (2021) based on their phylogenetic results. Backebergia (B. militaris) was resolved as sister to the clade of Marshallocereus + (Pterocereus + Lophocereus).AA. Sanchez, D. & Arias, S. 2022: Updates to the Cactaceae species-level checklist for the genera Peniocereus, Pachycereus, Backebergia and Pterocereus. – Published online at https://caryophyllales.org/cactaceae/Checklist.