Plants more than 55 cm tall, vegetative parts covered with appressed white hairs 0.2-0.5 mm. Stem erect, at base ca. 4 mm in diam., finely angular-sulcate, glabrous. Leaves 6-15 cm, nearly sessile; stipules of lower leaves unknown, of upper leaves ca. 5 mm, glabrous or very sparsely white and black hairy, soon falling; rachis glabrous or with scattered hairs only; leaflets in 6-8 pairs, elliptic, 10-20 × 5-12 mm, both surfaces glabrous or with scattered hairs only, apex acuminate-mucronulate. Racemes 5-7 cm, loosely 10-12-flowered; peduncle 7-10 cm, with scattered white and black hairs; bracts narrowly triangular to linear, ca. 2 mm, white and black hairy. Bracteoles 1-2 mm. Calyx 9-11 mm, sparsely covered with ascending to spreading black hairs 0.3-0.5 mm; teeth 4-5 mm. Petals pale lilac; standard ca. 18 × 8 mm; wings and keel ca. 17 mm. Legumes with a slender stipe 8-10 mm, narrowly ellipsoid, 20-25 mm, ca. 6 mm high, keeled ventrally, narrowly rounded dorsally, shortly acuminate, 2-locular; valves membranous, glabrous.
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