Cephalocereus Pfeiff. sec. Tapia & al. 2017

Primary tabs

Cephalocereus Pfeiff. sec. Tapia & al. 2017

Cephalocereus Pfeiff. sec. Tapia & al. 2017 in Allg. Gartenzeitung 6: 142. 1838
  • =Cephalophorus Lem., Cact. Aliq. Nov.: 7. 1838, nom. illeg., syn. sec. Anderson 2005
  • =Carnegiea subg. Rooksbya Backeb. in Cact. Succ. J. (Los Angeles) 22(5): 154. 1950 syn. sec. ???
  • Rooksbya (Backeb.) Backeb., Cactaceae 4: 2165. 1960 syn. sec. Tapia & al. 2017

Acknowledgments

Revised by Salvador Arias

Taxon standing

Category A. The genus is monophyletic based on a complete or very comprehensive phylogenetic study, and a phylogeny-based taxonomic synopsis was published.A

Notes

Phylogenetics: Tapia et al. (2017) have reconstructed the phylogeny of the Cephalocereus group using molecular data from seven plastid DNA regions (petL-psbE, psbA-trnH, rpl16, rpl32-trnL, trnL-F, trnQ-rps16, and ycf1), as well as morphological characters. The Cephalocereus group was recovered as monophyletic with high support values, whereas Neobuxbaumia appeared as paraphyletic. The Cephalocereus group was recovered as monophyletic with high support values, whereas Neobuxbaumia Backeb. appeared as paraphyletic. The authors have therefore proposed to unite all species of Neobuxbaumia, Cephalocereus, and Pseudomitrocereus Bravo & Buxb. in one single genus, for which Cephalocereus is the oldest name.B

Bibliography

A. Tapia, H.J., Bárcenas-Argüello, M.L., Terrazas, T. & Arias, S. 2017: Phylogeny and circumscription of Cephalocereus (Cactaceae) based on molecular and morphological evidence. – Systematic Botany 42(4): 709-723
B. Arias, S. 2021: Revisions of Acanthocereus, Aporocactus, Astrophytum, Bergerocactus, Cephalocereus, Disocactus, Marshallocereus, Nyctocereus, Pachycereus, Peniocereus, Pereskiopsis, Selenicereus, Stenocereus, Strophocactus. – In: Korotkova N. & al., Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family. – Willdenowia 51: 251-270