Stems slender, ascending, simple or laxly branched, 1-4 arising from the rootstock, up to 10 cm long. Leaves unifoliolate, linear-lanceolate, slightly falcate, mucro short, recurved, glabrescent above, thinly appressedly pilose beneath, 2.8-7 cm long; petioles slender, 0.3-1.2 cm long, with two small bracts 1-1.5 mm long at apex. Stipules narrow subulate, pubescent, 2-5 mm long. Flowers axillary, solitary or three together, purple, 0.9-1.2 cm long; pedicels 4-5.5 mm long. Calyx pilose, tube 5 mm in diam., lobes unequal, lateral and lowest longest. Vexillum silky without, 0.9-1.2 cm long, 4-7 mm broad; alae 1-1.2 cm long, 2.5 mm broad, sparsely pilose without and ciliate, especially towards base of lobe; carina 6.5-7.5 mm long, 2 mm broad. Staminal-tube 5.5 mm long, vexillary stamen attached. Ovary silky, 5 mm long. Style 2 mm long, glabrous. Legume slightly falcate, pubescent, 2-3 cm long, 3 mm broad.
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