光萼黄耆 guang e huang qi

Plants 20-35 cm tall, acaulescent or shortly caulescent, glabrous except for ovary or sparsely white hairy. Stem, if present, up to 7 cm. Leaves 12-35 cm; stipules 10-20 mm, free from petiole, glabrous; petiole 4-8 cm, at base up to 2 mm thick, like rachis glabrous or loosely covered with spreading hairs 1-2 mm; leaflets in 10-15 pairs, ovate, 8-30 × 5-22 mm, glabrous or at margins and abaxially at midvein sparsely covered with spreading hairs ca. 1 mm, apex rounded to very shortly acumi­nate. Racemes very loosely 5-7-flowered; peduncle 0.5-2 cm; bracts 5-12 mm, glabrous or loosely hairy. Calyx 11-13 mm, glabrous or with a few spreading hairs at teeth; teeth unequal, 3-5 mm. Petals yellow or greenish yellow; standard oblong to elliptic, 24-25 × 8-9 mm, apex emarginate; wings 20-22 mm; keel 17-18 mm. Ovary with a stipe 1-1.5 mm, hairy. Legumes ellipsoid, ca. 20 mm, ca. 10 mm high.

● Xinjiang.

The Chinese record of Astragalus sewertzowii Bunge from Xin­jiang (FRPS 42(1): 210. 1993) is possibly based on a misidentification of A. psilosepalus. Astragalus sewertzowii is not known to occur in China.