ASTRAGALUS SECT. IRANIA (FABACEAE): A NEW MONOTYPIC SECTION FROM IRAN
Based on morphological and molecular phylogenetic data, here we describe Astragalus sect. Irania Maassoumi, Mahmoodi & Bagheri as a new section in the immense genus Astragalus. Description and diagnosis are given. Morphologically, the new section is closely related to sect. Stereothrix Bunge, which is widely, distributed in Elburz and Zagros Mountains ranges. The new section differs from sect. Stereothrix in characters of the inflorescence, color of petals and stipules. But in the molecular phylogenetic analysis, it is surprisingly placed among the thorny Astragalus species. Type of the new section is A. issatissensis Maassoumi, Mahmoodi, which is so far known only from the highest elevations of Shirkuh Mt. above 3800 m a.s.l in Yazd province.
new section , Astragalus issatissensis , Shirkuh , Alpine , Yazd , Iran
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