Astragalus lasiopetalus Bunge, Index Seminum (TU, Dorpatensis) 1839: 7 (1841).

Fig. 5

≡ Myobroma lasiopetala (Bunge) Steven, Bull. Soc. Imp. Naturalistes Moscou 29 (2): 150 (1856).

≡ Tragacantha lasiopetala (Bunge) Kuntze, Revis. Gen. Pl. 2: 946 (1891).

= Astragalus lasianthus C. A. Mey., A. G. H. Bongard & C. A. Meyer, Fl. Altaic., Suppl. 2: 92 (1841).

= Astragalus ulacholensis B. Fedtsch., Trudy Imp. S. - Peterburgsk. Bot. Sada 24: 208 (1905).

Notes.

This species is distributed throughout Kazakhstan, Kyrgyzstan, Mongolia, Tajikistan, China (Xinjiang), and Uzbekistan (Podlech and Zarre 2013). We found this species (voucher number: MT 9) in meadows and solonchak banks of rivers of the Chu River, Shu district, occurring at elevations of 410– 460 m. Astragalus lasiopetalus belongs to the sect. Erionotus (Ulziykhutag 2003), however, this section was transferred to the sect. Caprini, according to Podlech and Zarre (2013). In this study, A. lasiopetalus was clustered with the sect. Erionotus based on phylogenetic results (Fig. 2). Astragalus lasiopetalus is morphologically similar to A. lanuginosus, but can be distinguished by its leaflets (7 –) 9–12 (– 15) pairs, ovate to elliptic, 10–25 (– 32) × 7–16 (– 20) mm, upper side glabrous or nearly so, underside with ascending hairs (vs. (16 –) 20–26 pairs, ovate to elliptic or obovate, (4 –) 5–12 × (3 –) 4–8 mm, upper side cotton-wool like, often glabrescent, underside subappressed hairy), racemes 2–10 (– 12) - flowered (vs. 2–5 (– 6) - flowered), standard 14–18 (– 20) mm, oblong-panduriform, hairy on midline (vs. 20–29 (– 35) mm, obovate-panduriform, densely appressed hairy on upper side), pods long villous (vs. densely covered with appressed to spreading hairs).