Cephalocereus

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Cephalocereus

Cephalocereus Pfeiff. in Allg. Gartenzeitung 6: 142. 1838 sec. Tapia & al. 20171

• ≡Pilocereus Lem., Cact. Gen. Sp. Nov.: 6-7. 1839, nom. illeg., syn. sec. Tapia & al. 20171
• Type: Pilocereus senilis (Haw.) Lem.
• Type: Cephalocereus senilis (Haw.) Pfeiff.

• 1. 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. http://doi.org/10.1600/036364417X696546

• =Cephalophorus Lem., Cact. Aliq. Nov.: 7. 1838, nom. illeg., syn. sec. Anderson 20052

• 2. Anderson, E. F. 2005: Das große Kakteen-Lexikon. – Stuttgart: Ulmer

• =Neobuxbaumia Backeb. in Blätt. Kakteenf. 1938(6): 17, 8, 12, 24. 1938 syn. sec. Tapia & al. 20173
• Type: Neobuxbaumia tetetzo (F.A.C.Weber ex J.M.Coult.) Backeb.

• 3. 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. http://doi.org/10.1600/036364417X696546

• =Haseltonia Backeb. in Blätt. Sukkulentenk. 1: 3. 1949 syn. sec. Tapia & al. 20174
• Type: Haseltonia hoppenstedtii (F.A.C.Weber) Backeb.

• 4. 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. http://doi.org/10.1600/036364417X696546

• =Neodawsonia Backeb. in Blätt. Sukkulentenk. 1: 4. 1949 syn. sec. Tapia & al. 20175
• Type: Neodawsonia apicicephalium (E.Y.Dawson) Backeb.

• 5. 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. http://doi.org/10.1600/036364417X696546

• =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. 20176
• Type: Rooksbya euphorbioides (Haw.) Backeb.

• 6. 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. http://doi.org/10.1600/036364417X696546

• =Pseudomitrocereus Bravo & Buxb. in Bot. Stud. 12: 53. 1961 syn. sec. Tapia & al. 20177
• Type: Pseudomitrocereus fulviceps (F.A.C.Weber ex K.Schum.) Bravo & Buxb.

• 7. 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. http://doi.org/10.1600/036364417X696546

Content

• Notes
• Taxon standing
• Acknowledgments
• Bibliography

Notes

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 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.A,B

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.B

Acknowledgments

Revised by Salvador Arias

Bibliography

A. 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. http://doi.org/10.3372/wi.51.51208

B. 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. http://doi.org/10.1600/036364417X696546