University of Isfahan Taxonomy and Biosystematics 3115-9001 17 65 2025 12 22 A new species of Astragalus sect. Malacothrix from Northwestern Iran, with emendations on some species from other sections in Iran A new species of Astragalus sect. Malacothrix from Northwestern Iran, with emendations on some species from other sections in Iran 39 46 29810 10.22108/tbj.2025.145120.1308 EN Ali Asghar Maassoumi Professor, Botany Research Division, Research Institute of Forests & Rangelands, Agricultural Research, Education and Extension ‎Organization (AREEO), Tehran, Iran Adel Ramezani MSc, Mountain Environment Protection Society (MPES), No. 34, Darband, Tehran, Iran Journal Article 2025 05 03 In this study, a new species, <em>Astragalus carbaatiae</em> Maassoumi & Ramezani, is described from Northwestern Iran, which belongs to <em>A</em>. sect. <em>Malacothrix.</em>  The species is distinguished by unique morphological characteristics and ecological adaptation. It is known only from the type locality on moderately saline hills, and due to habitat threats such as grazing and land-use change, it is assessed as Critically Endangered (CR) under the IUCN criteria. In addition, taxonomic notes along with morphological emendations are provided for several other species from different sections of the genus <em>Astragalus</em> in Iran, based on recent field collections and herbarium studies. https://tbj.ui.ac.ir/article_29810_6980b6c9bbffb95e4df3aefcdc942212.pdf