Homalocephala
Homalocephala, Cactaceae 3: 181. 1922 sec. Vargas-Luna & al. 2018
- Type: Homalocephala texensis
Content
Taxon standing
Category B. The genus is monophyletic based on phylogenetic studies that support the clade based on a sufficiently dense or even complete sampling, or support a monotypic genus as a distinct lineage, but do not provide a new taxonomic treatment at the species level. In many cases, older classical taxonomic synopses or a monographic treatment exist for these genera providing a reliable assessment of the species included.