Template:Vargas-Luna, Hernández-Ledesma & Majure, 2018
- Vargas-Luna, M.D., Hernández-Ledesma, P. & Majure, L.C. 2018. Splitting Echinocactus: morphological and molecular evidence support the recognition of Homalocephala as a distinct genus in the Cacteae. PhytoKeys 111: 31–59. DOI: 10.3897/phytokeys.111.26856
