A large shrub or a small tree, 1.5-3(-5) m tall, generally with an unbranched trunk up to 30-70 mm thick at the base. Branches grey or reddish, slender, lax, pendulous, slightly sulcate, with sparse, short, adpressed hairs on youngest parts. Leaves linear, piniform, straight, (25-)40-70 mm long and 0.4-0.7 mm thick, subterete, acuminate, glabrous (or when young with short, appressed hairs), sombre green, basally with a constricted portion (pulvinus). Leaf base below this often with short, lateral, subulate teeth. Inflorescence a sparse, lax, 3-7-flowered raceme on a slender peduncle terminating the branch. Bracts subulate, caducous, 1.5-3 mm long. Pedicel 4.5-6 mm long, adpressed-puberulous. Bracteoles 0.8-1.2 mm long. Calyx obliquely campanulate, minutely sericeous or subglabrous; lobes broadly triangular, short, 0.8-1.2 mm. Petals light yellow or partly with violet shade. Standard blade 8.5-9.5 x 8.5-9 mm, short-sericeous on most of the back. Wing blades 7.5-9 x ±3 mm. Keel blades 6.5-7 x ±4 mm, short-sericeous on lower front parts, slightly upcurved towards the apex. Pistil sericeous on ovary and style base; ovules 2-4; stigma regular, capitate. Pod 20-22 x 4.7-5.5 mm.
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Shrub or small tree with pendulous branches, 1.5-5.0 m. Leaves 1-foliolate, needle-like, basally with a constricted portion, glabrous. Flowers 3-7 on terminal, lax raceme with long peduncle, pale yellow or partly violet, wings glabrous, keel rostrate, hairy, calyx shortly hairy, lobes broadly triangular, short.