Subshrubs or perennial herbs, ca. 50 cm tall. Stems erect, much angulate, adpressed shortly hairy. Leaves 3-foliolate; petiole 3-5 mm, adpressed shortly hairy; leaflets oblong-linear, terminal one 2-4 × 0.2-0.4 cm, abaxially adpressed hairy, adaxially subglabrous, base narrowly cuneate, margin slightly involute, apex obtuse or emarginate, mucronate. Racemes axillary; peduncle 0.5-1 cm, densely adpressed white hairy, 3-5-flowered. Pedicel ca. 2 mm. Calyx narrowly campanulate, 5-parted. Corolla white or yellow, distinctly overtopping calyx; standard broadly elliptic, ca. 8 × 5 mm; wings oblong, ca. 7 × 1 mm; keel ca. 8.5 mm, base long clawed, apex obtuse. Legume oblong-ovoid, 4.5-5 × ca. 2 mm, sparsely adpressed white hairy, apex rostrate. Legume of cleistogamous flower obovoid-orbicular, ca. 3 × 2.5 mm, apex shortly rostrate. Fl. Jun-Sep, fr. Oct.
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A herb or small shrub. It grows 50 cm tall. The stems are erect and angled. They have short hairs. The leaves have 3 leaflets and the end one is 2-4 cm long by 2-4 mm wide. The flowers are in groups of 3-5 in the axils of the leaves. They are white or yellow. The pods are oval and 3 cm long.
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