Erect, densely leafy shrub, 0.4-1.5(-3.5) m high; sparingly branched with short-villous branches. Leaflets 12-22 mm long, terete, subglabrous, needle-like, often slightly incurved, mucronate or spine-tipped. Inflorescences unifloral; flowers dispersed along branch(es). Calyx: tube shortly hairy; lobes needle-like, densely pubescent, apically spine-tipped. Petals bright yellow; keel glabrous. Flowering time Aug.-Dec. Pod widely lanceolate, white-woolly, almost entirely pubescent.
Erect, sparsely branched, densely leafy shrub, 0.5-1.5 m. Leaves 3-foliolate, leaflets terete, needle-like, often slightly incurved, spine-tipped, subglabrous. Flowers solitary, scattered along branches, bright yellow, wings glabrous, keel somewhat rostrate, glabrous, calyx shortly hairy, lobes awl-shaped, spine-tipped.