Adesmia ephedroides (Fabaceae, Faboideae), a new species from the Mediterranean-type ecosystem of Valparaíso Region, Chile

Authors: Rosende, Benito Country: Chile DOI: 10.3897/phytokeys.259.156135 Published: Jan. 1, 2025 Source: PhytoKeys OpenAlex: View in OpenAlex

Collection: Pensoft Publishers

Keywords: Central Chile · Topics: Plant Taxonomy and Phylogenetics, Botanical Research and Chemistry, Plant Diversity and Evolution

A new species, Adesmia ephedroides, discovered in a restricted area of the coastal mountain range within the Valparaíso Region, Chile, is here described. Molecular phylogenetic analyses, based on five nuclear loci, were carried out to explore the phylogenetic position of the new species. Our findings robustly support A. ephedroides as a distinct species, positioned within a clade of Adesmia, characterised by shrubby growth habit, racemose inflorescences and bristled lomenta. This identified clade exhibits a distribution limited to the semi-arid regions spanning from the southern Atacama Desert to Central Chile. Adesmia ephedroides is readily distinguishable from its closest relatives through a combination of features, including green young branches and distinctive leaf morphology: glabrous, few leaflets and persistent, cylindrical petiole and rachis. A detailed taxonomic description, illustrations, field images, distribution map, ecological insights into its habitat and a preliminary IUCN conservation status assessment are provided.

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