Molecular Phylogeny and Morphological Analysis Support a New Species and New Synonymy in Iranian Astragalus (Leguminosae).

As a result of a taxonomic and phylogenetic revision of Astragalus section Hymenostegis we identified a new species of Astragalus from northwestern Iran, namely A. remotispicatus spec. nov., which is described and illustrated here. It is morphologically similar to A. karl-heinzii in possessing a lax inflorescence. Phylogenetic inference of the nuclear ribosomal DNA internal transcribed spacer (ITS) region support A. remotispicatus as a clearly distinct species within the lax-inflorescence group of this section. Also the placement of A. sciureus var. subsessilis was found to be wrong and this taxon should be treated as a synonym within A. kohrudicus

Astragalus trifoliastrum (Fabaceae), a revived species for the flora of Turkey

WOS: 000362577700005As the result of surveying the relevant type specimens, together with macro- and micro-morphological studies, chromosome counting and ITS sequencing, Astragalus trifoliastrum was found to be a species independent of A. laguriformis (with which it has peviously been synonymized). In contrast, A. wanensis, assumed to be a synonym of A. trifoliastrum, indeed appears to be identical with A. trifoliastrum. The diploid chromosome number of 2n = 16 is reported for the first time for A. trifoliastrum

Single most parsimonious tree (tree length = 52 steps, consistency index = 1) derived from a phylogenetic analysis of sequence data of the nuclear ITS region.

<p>An identical tree topology was obtained with Bayesian phylogenetic inference. Numbers above branches indicate posterior probabilities of the Bayesian analysis, below the bootstrap values (%) for the parsimony analysis are given.</p

Holotype of <i>Astragalus remotispicatus</i> (Bagheri 97932).

<p>Holotype of <i>Astragalus remotispicatus</i> (Bagheri 97932).</p

Information of examined taxa in this study.

<p>Information of examined taxa in this study.</p

Close up of the inflorescence.

<p>Close up of the inflorescence.</p

Holotype of <i>Astragalus kohrudicus</i> (digital barcode in P herbarium: P00048932).

<p>Holotype of <i>Astragalus kohrudicus</i> (digital barcode in P herbarium: P00048932).</p

Differences between <i>Astragalus remotispicatus</i>, <i>A</i>. <i>karl-heinzii</i> and <i>A</i>. <i>rubrostriatus</i>.

<p>Differences between <i>Astragalus remotispicatus</i>, <i>A</i>. <i>karl-heinzii</i> and <i>A</i>. <i>rubrostriatus</i>.</p