Herb, almost 1 m in length; stem creeping or forming tussocks, terete, striate with stiff, upwardly appressed to spreading pilosity. Leaves 3-foliolate; stipules obliquely ovate-lanceolate with long attenuate apex and slightly auriculate base, 0.5-1 cm long, 1.5-3 mm wide, puberulent and pilose to glabrescent on the outer surface, persistent; petiole pilose, 1-3 cm long; leaf-rhachis similar, 0.3-1 cm long; leaflets elliptic-obovate, (acute to) obtuse and emarginate at apex, cuneate to rounded at base, pilose to essentially glabrous on the upper surface, densely soft pilose on the lower; terminal leaflet 1.7-4.3 cm long, 0.7-3.2 cm wide; lateral leaflets 1.3-3 cm long, 0.7-2 cm wide. Inflorescence composed of axillary and terminal racemes; rhachides striate to grooved, sparsely to abundantly stiff-pilose and finely puberulent with multicellular and uncinulate hairs; primary bracts ovate-acuminate with long attenuate apex, 3.5-5 mm long, 1.5-2 mm wide, 2 pedicels; secondary bracts absent or, if rarely present, depauperate; pedicels with pubescence similar to that of rhachis, 0.4-1.7 (-2.1) cm long. Flowers usually pink. Calyx 2-lipped; tube minutely puberulent; teeth of both lobes pilose, 2-3 mm long. Corolla exceeding calyx; standard obovate, shortly clawed, 4-5.5 mm long, 2.5-3.5 mm wide; wings ± oblong, broader above, slightly auricled, shortly clawed, 3-3.5 mm long, 1-2 mm wide; keel-petals somewhat triangular, truncate at apex, gradually narrowed to a long claw, 3.5-4 mm long, 1 mm wide. Fruit with a stipe 0.5-2 mm long, 1-5-articled; articles ± obliquely oblong, straight on the upper suture, curved below, constricted about half their width at the isthmi, 3.5-5.5 mm long, 2.5-3 mm wide, uncinulate-pubescent throughout. Seed transversely elliptic, 2.5-5 mm long, 1.5 mm wide. |
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