Bergerocactus in Contr. U.S. Natl. Herb. 12: 435. 1909 sec. Arias & al. 2005
- Type: Bergerocactus emoryi
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.
Phylogenetics: Bergerocactus is a monotypic genus within the Pachycereinae clade, and may be sister to Nyctocereus (Arias & al. 2005). Bergerocactus emoryi represents a unique tetraploid taxon, with the possibility of hybridizing with Myrtillocactus and Pachycereus in the floristic province of Baja California, where it is endemic.A
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