taxonID	type	description	language	source
3D1ACBF75DF75236BCDF5F7B5DD88BD0.taxon	type_taxon	Type. A. uvsicus D. Munkhtulga, S. Baasanmunkh & H. J. Choi, sp. nov.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
3D1ACBF75DF75236BCDF5F7B5DD88BD0.taxon	description	Description. Perennials, herbaceous, acaulescent, with bifurcate hairs. Stipules adnate, like rachis densely to rather densely hairy. Leaves with appressed hairs. Inflorescens with a well developped peduncle, densely mostly many-flowered. Bracteoles absent. Calyx tubular at beginning of anthesis, mostly soon elongating and becoming ovoid to globose-inflated. Legumes enclosed in the calyx, sessile, bilocular.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
F53FE1E1AEB1586E8FBFB0018BD2450F.taxon	description	Fig. 3	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
F53FE1E1AEB1586E8FBFB0018BD2450F.taxon	diagnosis	Diagnosis. Astragalus gobi-altaicus was first described in East Gobi, Mongolia (Ulziykhutag 1990). Later, this species was treated as a synonym of A. laguroides by Xu and Podlech (2010). However, based on our extensive morphological studies, A. gobi-altaicus can be distinguished from A. laguroides by its inflorescence being oblong-cylindrical (vs. globose or ovate), leaflets that are broadly elliptical or oblong-obovate, more rarely sub-oval (vs. leaflets oblong, narrowly elliptical, or lanceolate), calyx teeth 4 – 6 mm long (vs. calyx teeth 3 – 4) (Table 2). In addition, the phylogenetic tree supported that A. gobi-altaicus was different from A. laguroides, which was more similar to A. oyunicus and A. lupulinus (Fig. 1).	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
F53FE1E1AEB1586E8FBFB0018BD2450F.taxon	description	Description. Plants perennial 8 – 12 cm tall, acaulescent, with merely white, in vegetative parts distinctly warty hairs. Stipules whitish, 3 - 4 mm, triangular, nearly free from the petiole, not connate behind the stem, appressed hairy, at the margins with basifixed hairs. Leaves (– 3) 8 – 14 cm; petiole 1 – 4 cm, like the rachis slender, loosely to rather densely covered with medifixed, appressed hairs 0.5 - 1 mm. Leaflets in 2 - 4 pairs, in the basal leaves often in 1 – 2 pairs only, oblanceolate or narrowly elliptic to elliptic, 7 - 18 × 5 – 10 mm, mucronate, on both sides densely covered with medifixed, appressed hairs 1.5 - 2 (- 3) mm. Peduncles 3 - 6 cm, slightly angular-sulcate, loosely to rather densely covered with medifixed, appressed hairs, partly glabrescent with age. Raceme oblong to oblong-cylindrical 3 - 8 cm long, densely many-flowered. Bracts whitish, 3 - 5 mm, narrowly linear, covered with mostly basifixed hairs. Calyx 11 - 14 mm, tubular at beginning of anthesis, soon ovoid-inflated, rather densely covered with subbasifixed to basifixed, rigid, spreading, straight white hairs 2 - 3 mm; teeth filiform, 4 - 5 mm. Standard (– 9) 14 - 18 (– 20) mm; blade c. 5 mm wide, elliptic, narrowly triangular toward the slightly emarginate tip, slightly constricted below the middle, at the base obtusely angularly passing into the claw. Wings 12 – 15 mm; blades narrowly oblong, obtuse, c. 5.5 × 1.5 mm; auricle 1 mm, claw 8 mm. Keel 10 – 12 mm; blades obliquely obovate 3.5 × 2 mm; claw c. 8 mm. Ovary sessile. Pods enclosed in the calyx, sessile, oblong, 7 - 8 × 3 - 4 mm long, with a hooked beak c. 2 - 2.5 mm, unilocular; covered with tangled, spreading only white hairs.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
F53FE1E1AEB1586E8FBFB0018BD2450F.taxon	distribution	Distribution. Endemic to Mongolia. This species is currently known from the South Gobi in Mongolia (Fig. 9).	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
833B6C055519501B8B4C150A39B40FCB.taxon	description	Fig. 2	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
833B6C055519501B8B4C150A39B40FCB.taxon	diagnosis	Diagnosis. Astragalus laguroides is a type species in the section Laguropsis (Podlech and Zarre 2013). This species is widely distributed in central and western Mongolia. According to the description of A. tamiricus, some morphological characteristics, such as racemes, leaflets, stipules, and flowers, including calyx, standard, keel, and wings, are slightly smaller than A. laguroides (Biazrov et al. 1989). However, our studied samples of A. tamiricus, collected from the type location in Arkhangai Province, clustered with A. laguroides based on our phylogenetic tree (Fig. 1). Therefore, we treated A. tamiricus as an additional synonym of A. laguroides in this study.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
833B6C055519501B8B4C150A39B40FCB.taxon	description	Description. Plants perennial 8 – 15 (– 20) cm tall, acaulescent or nearly so, in vegetative parts covered with medifixed, appressed white hairs. Stems, if present, up to 1 cm, angular-sulcate, densely hairy. Stipules 6 – 8 (– 10) mm, narrowly triangular-acuminate, adnate to the petiole for c. 3 – 4 mm, otherwise free from each other, covered with spreading or ascending hairs. Leaves 3 – 14 (– 18) cm; petiole 1.5 – 5 (– 8) cm, like the rachis rather densely to densely, more rarely loosely hairy. Leaflets in 3 – 5 (– 8) pairs, in the basal leaves often only in 1 – 2 pairs, narrowly elliptic to more rarely elliptic, 8 – 25 (– 40) × 3 – 6 mm, acute, on both sides rather densely appressed hairy. Peduncles 2 – 12 cm, rather densely covered with symmetrically to asymmetrically bifurcate, appressed to subappressed white hairs, toward the raceme sometimes also with some black hairs mixed in. Racemes ovoid, 2 – 4 (– 6) cm long, densely many-flowered. Bracts linear-acute, 4 – 8 mm, covered with asymmetrically bifurcate, at the margins with basifixed white hairs. Calyx at anthesis tubular, soon becoming ovoid-inflated, 11 – 14 mm, loosely to rather densely covered with asymmetrically bifurcate to basifixed, tangled, spreading white hairs 1 – 2 mm, at outer side of the teeth and sometimes at the nerves of the tube also with black hairs; teeth subulate, 3 – 4 mm. Petals violet. Standard 17 – 20 mm; blade 6 – 7 mm wide, narrowly obovate, apex emarginate. Wings slightly shorter than standard, ca. 14 – 18 mm long; blades narrowly oblong, rounded, 5.5 – 7 × 1.5 – 2 mm; auricle 1 mm, claw 9 – 10 mm. Keel 13 – 15 mm; blades 4 – 4.5 × 1.8 – 2.2 mm; claw 9 – 10 mm. Ovary sessile, narrowly ellipsoid. Pods enclosed in the calyx, sessile, oblong, (6) 7 - 8 × 2 - 3 mm long, keeled ventrally, slightly and widely grooved dorsally, with a hooked beak c. 1 mm, unilocular; covered with subappressed to spreading white hairs 1 – 1.5 mm, smaller black hairs amount to greater than the apex.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
833B6C055519501B8B4C150A39B40FCB.taxon	distribution	Distribution. China (Inner Mongolia, Xinjiang), Russia and Mongolia (Podlech and Zarre 2013) (Fig. 9).	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
BE814C3FEABD52A7AAEEA539783EF3A3.taxon	description	Fig. 4	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
BE814C3FEABD52A7AAEEA539783EF3A3.taxon	diagnosis	Diagnosis. The new species is close to A. gobi-altaicus, but differs by its leaves having leaflet narrowly elliptic, 15 – 18 × 4 – 7 mm, apex acute (vs. oblanceolate or narrowly elliptic to elliptic, 7 – 18 × 5 – 10 mm, apex mucronate) and raceme oblong to oblong-cylindrical, 3 – 8 cm long (vs. ovoid to oblong, 3 – 4 cm long). It is also similar to A. laguroides in leaf shape and general habit, but differs in its stipules broadly triangular-acuminate, 4 – 6 mm long (vs. narrowly triangular-acuminate, 5 – 8 (– 10) mm long) and pod densely covered with spreading white and fewer black hairs 2 mm (vs. covered with subappressed to spreading white hairs 1 – 1.5 mm, smaller black hairs amount greater than the apex) (Table 2).	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
BE814C3FEABD52A7AAEEA539783EF3A3.taxon	description	Description. Plants perennial, 5 - 15 cm tall, acaulescens, in vegetative parts covered with ± medifixed, appressed white hairs c. 1 mm. Rootstock divided with short to elongated blackish brown branches. Stipules broadly triangular-acuminate, 4 - 6 mm, shortly adnate to the petiole, otherwise free from each other, densely covered with hairs up to 1.5 mm, at the margins also with basifixed hairs. Leaves 5 - 12 (- 15) cm; petiole 2 - 4 cm, like the rachis covered with medifixed, appressed hairs. Leaflets in 3 - 5 pairs, narrowly elliptic, 15 - 18 × 4 - 7 mm, on both sides densely hairy, apex acute. Peduncles 3 - 7 cm, rather densely to densely covered with symmetrically to asymmetrically bifurcate, flexuose, subappressed white hairs. Racemes ovoid to oblong 3 - 4 cm long. Bracts whitish, 5 - 6 mm, narrowly triangular, with strongly asymmetrically bifurcate, ± spreading white hairs. Calyx at beginning of anthesis tubular, later on ovoid-inflated, 10 - 12 mm long, covered with basifixed, spreading, straight white and fewer black hairs 1 - 2 mm; teeth subulate, 2 - 3 mm. Petals violet. Standard 18 - 20 mm; blade 5 - 6 mm wide, obovate, slightly constricted in the middle, emarginate, at the base gradually narrowed. Wings 14 - 16 mm; blades narrowly oblong, obtuse, 5.5 - 6.5 × 2 - 2.5 mm; auricle c. 1.5 mm; claw c. 9 mm. Keel 12 - 14 mm; blades 4 - 4.5 × 3 mm; claw 8 - 8.5 mm. Ovary sessile. Legumes enclosed in the calyx, 6 - 7 × 3 - 4 mm, with a hooked beak c. 1 mm, unilocular; densely covered with spreading white and fewer black hairs c. 2 mm.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
BE814C3FEABD52A7AAEEA539783EF3A3.taxon	distribution	Distribution. Endemic to Mongolia (Fig. 9).	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
BE814C3FEABD52A7AAEEA539783EF3A3.taxon	etymology	Etymology. The species is named after Prof. Batlai Oyuntsetseg who is a botanist in Mongolia.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
E2F5EB61737B52078F27CF21822D0E1A.taxon	description	Fig. 5	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
E2F5EB61737B52078F27CF21822D0E1A.taxon	diagnosis	Diagnosis. The morphological features of A. teshigicus are similar to that of A. laguroides but differ by its raceme oblong or oblong-cylindrical (vs. ovoid), calyx rather densely covered with spreading, straight only white hairs 2 mm (vs. densely covered with asymmetrically bifurcate to basifixed, tangled, spreading white hairs 1 – 2 mm, at outer side of the teeth and sometimes at the nerves of the tube also with black hairs), leaves 8 – 18 cm (vs. 3 – 14 cm long), leaflets in 4 – 6 pairs, elliptical, 14 – 20 × 5 – 8 mm (vs. 3 – 5 pairs, narrowly elliptic, 8 – 25 × 3 – 6 mm) (Table 2).	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
E2F5EB61737B52078F27CF21822D0E1A.taxon	description	Description. Plants perennial, 8 - 20 cm tall, acaulescent. Stems up to 1 cm, densely appressed white hairy. Stipules 4 - 5 mm long, broadly triangular-acuminate, densely covered with spreading or ascending hairs. Leaves 8 - 18 cm; petiole 3 - 7 cm, like the rachis covered with appressed white hairs. Leaflets in 4 - 6 pairs, elliptical, 14 - 20 × 5 - 8 mm, on both sides densely covered with medifixed, subappressed hairs, acute to rarely obtuse. Peduncles 6 - 12 cm, with medifixed, appressed hairs. Racemes oblong or oblong-cylindrical (3.5) 4 - 7 (8) cm long, rather densely many-flowered. Bracts scarious, 5.5 - 6 mm, narrowly triangular, sparsely covered with ascending only white hairs, at the margins covered with spreading white hairs up to 1.5 - 2 mm. Calyx 12 - 15 mm, at the beginning of anthesis tubular, soon ovoid-inflated, densely covered with basifixed, ± spreading, rigid white hairs 1.5 - 2 mm; teeth subulate, 2 - 3 mm. Petals purplish. Standard 20 - 24 mm; blade 4.5 - 5.5 mm wide, obovate, slightly constricted in the middle, slightly emarginate, at the base gradually narrowed. Wings 17 - 22 mm; blades oblong, rounded, 5 - 5.5 × 2 - 3 mm; auricle c. 1 mm; claw 8 - 9 mm. Keel 14 - 18 mm; blades 4 - 4.5 × 2 - 3 mm; claw c. 8 mm. Ovary sessile. Legumes enclosed in the calyx, oblong, 4 - 5.5 × 2 - 2.5 mm, with a hooked beak c. 1 mm, unilocular; densely covered with spreading white hairs.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
E2F5EB61737B52078F27CF21822D0E1A.taxon	distribution	Distribution. Endemic to Mongolia. This species is found only in a single location in the northern part of the country (Fig. 9).	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
E2F5EB61737B52078F27CF21822D0E1A.taxon	etymology	Etymology. The species epithet refers to the location where the species was collected.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
8256ABF336C156A589ADF791529C5A79.taxon	description	Fig. 7	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
8256ABF336C156A589ADF791529C5A79.taxon	diagnosis	Diagnosis. Astragalus uvsicus is morphologically similar to A. beitashanensis W. Chai & P. Yan (Zhai and Yan 2010) and A. laguroides, but can be distinguished by its leaflet 2 – 5 pairs, narrowly elliptic, acute 8 – 11 (– 14) × 3 – 5 mm (A. beitashanensis, vs. 3 – 5 pairs, elliptic to suborbicular, obtuse, 4 – 9 × 3 – 6 mm; vs. A. laguroides, 3 – 5 pairs, narrowly elliptic, acute 8 – 25 × 3 – 6 mm) Legumes linear, 5 – 6 × 2 – 3 mm, with a beak c. 1 mm, bilocular, loosely covered with spreading, straight hairs (A. beitashanensis, legumes oblong, c. 8 mm, unilocular, very densely covered with spreading, basifixed hairs; A. laguroides, legumes oblong, (6) 7 – 8 × 2 – 3 mm long, with a hooked beak c. 1 mm, unilocular; covered with subappressed to spreading hairs). At the section level, the Uvsicus section is differentiated by its plants covered with medifixed hairs (vs. covered with semi-appressed pilose in Mixiotricha), peduncle not longer than leaves, raceme many-flowered (vs. peduncle very short, raceme few-flowered in Trachycercis and Mixiotricha), legumes enclosed in the calyx (vs. calyx ruptured by legumes in Macrotrichoides), and bilocular (vs. unilocular in Laguropsis) (Table 3). The general habits of selected sections within the subgenus Cercidothrix are shown in Fig. 8.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
8256ABF336C156A589ADF791529C5A79.taxon	description	Description. Plants perennial, 5 - 12 cm tall, acaulescens or nearly so, covered with medifixed hairs. Rootstock with a pluricipital root-crown. Stipules narrowly triangular-acuminate, 5 - 7 mm, shortly adnate to the petiole, otherwise free from each other, covered with strongly asymmetrically bifurcate, subappressed white hairs up to 2 mm. Leaves 3 - 8 (12) cm; petiole 2 - 3 cm, like the rachis covered with medifixed, appressed hairs. Leaflets in 2 - 5 pairs, narrowly elliptic, 8 - 12 × 3 - 5 mm, apex acute, rather densely covered with medifixed, appressed hairs c. 1 mm. Peduncles 2 - 6 cm, with medifixed, appressed hairs. Racemes globose or ovate 3 - 4 cm long. Bracts scarious, 2 - 3 mm, narrowly triangular, white and few black hairy. Calyx at beginning of anthesis tubular, later on ovoid-inflated, 11 - 14 mm, with distinct, elevated longitudinal nerves, loosely covered with subbasifixed, spreading white and black hairs 1 - 2 mm; teeth subulate, 2 - 3 mm. Petals violet. Standard 15 - 18 mm; blade 3 - 4 mm wide, obovate, slightly constricted in the middle, emarginate, at the base gradually narrowed into the rather long claw. Wings 13 - 15 mm; blades narrowly oblong, obtuse, 5.5 - 6.5 × 1.1 - 2 mm; auricle c. 1 mm; claw 7.5 - 8.5 mm. Keel 12 - 14 mm; blades 4 - 5 × 3 mm. Ovary sessile. Legumes enclosed in the calyx, linear, c. 5 - 6 × 2 - 3 mm, with a beak c. 1 mm, bilocular, loosely covered with spreading, straight white hairs c. 1 mm, smaller black hairs amount greater than the apex.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
8256ABF336C156A589ADF791529C5A79.taxon	distribution	Distribution. Endemic to Mongolia. This species is found in the Khyargas and Uvs lakes in the depression of great lakes region in Mongolia (Fig. 9).	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
8256ABF336C156A589ADF791529C5A79.taxon	etymology	Etymology. The species epithet refers to the location where the species was collected.	en	Munkhtulga, Dariganga, Baasanmunkh, Shukherdorj, Nyamgerel, Nudkhuu, Park, Jong Ho, Tsegmed, Zagarjav, Tojibaev, Komiljon Sh., Choi, Hyeok Jae (2025): Morphological and phylogenetic analysis approach to three new species and a new section of Astragalus (Fabaceae) from Mongolia. PhytoKeys 255: 51-73, DOI: 10.3897/phytokeys.255.140805
