Soehrensia in Blätt. Kakteenf. 1938(6): 21. 1938 sec. Hunt 2016
- Type: Soehrensia bruchii
- =Helianthocereus in Cact. Succ. J. Gr. Brit. 11: 53. 1949 syn. sec. Korotkova 2021
- Type: Helianthocereus poco
Excluded from Echinopsis by Schlumpberger & Renner (2012); cf. Hunt (2016), CITES Cactaceae Checklist 3rd edition; see also note under Echinopsis.A
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.