4.2 Article

Akhania, a new genus for Salsola daghestanica, Caroxylon canescens and C. carpathum (Salsoloideae, Chenopodiaceae, Amaranthaceae)

Journal

PHYTOKEYS
Volume -, Issue 211, Pages 45-61

Publisher

PENSOFT PUBLISHERS
DOI: 10.3897/phytokeys.211.89408

Keywords

Akhania; Amaranthaceae; Chenopodiaceae; molecular phylogeny; new genus

Categories

Funding

  1. Russian Science Foundation [22-24-00964]
  2. Ministry of Higher Education and Science of Russian Federation [075-15- 2021-678]

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This study conducted molecular phylogenetic analysis on Salsola daghestanica and Caroxylon carpathum, revealing them as sister taxa and establishing a new genus, Akhania. The detailed distribution of Akhania daghestanica was also presented for the first time.
Genus Salsola s.l. was recently split into several genera of different phylogenetic placements within Salsoloideae, but both taxonomic and phylogenetic relationships of some parts of the former broadly defined Salsola still need to be clarified. A remarkable example is Salsola canescens nom. illegit. equivalent to Salsola boissieri, a taxon with tricky taxonomic history that was only recently transferred to the genus Caroxylon (tribe Caroxyleae). Salsola daghestanica, a narrow endemic of Central Dagestan (Russian Federation), was not even included in previous molecular studies of Salsoloideae and therefore still lacks an appropriate estimation of its relationships. Molecular phylogeny constructed here using nuclear and plastid DNA sequence data clearly placed Salsola daghestanica and Caroxylon carpathum as sister taxa and the clade S. daghestanica, Caroxylon canescens (Salsola boissieri), C. carpathum (Salsola carpatha) as a sister of the monophyletic Caroxylon. All three species are distinct from Caroxylon from a morphological standpoint. In conclusion, a new genus, Akhania, was established for these taxa. The detailed distribution of Akhania daghestanica is presented for the first time.

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