Perennial, erect, shrubby herb to 3 m tall, glabrous or subglabrous. Leaves: stipules caducous to deciduous, inequilaterally lanceolate to ovate, 3-5 mm long, 2-2.5 mm wide, with acuminate to caudate-acuminate apices; leaf axes with 1 or 2, often contiguous glands mostly at lowest pair of pinnae, and circular gland also sometimes at upper jugae; pinnae 2-4 (-5)-jugate, commonly with pseudostipels 0.5-1.5 mm long; leaflets (11-) 20-40-jugate, oblong to lanceolate-oblong, obtuse and apiculate, 5.5-13 mm long, 1-2.5 mm wide, ciliolate or glabrous. Inflorescence with peduncles 2-10 cm long with 2 persistent bracts 2.5-8 mm long. Flowers greenish yellow, glabrous; lower ones with calyx 1-1.3 mm long and petals 2.2-2.4 mm long; upper ones with calyx 1.8-2 mm long and petals 2.8-3.2 mm long. Pod oblong, flat, 12-25 mm long, 8.5-12.5 mm wide. Seeds 3-6, oblong, broadly obovate or oblong-oval, turgid, 4-5 mm long, 2.8-4 mm wide, brown.
Grows in floodplains, grasslands and low woodland in clay, clay-loam, sand, gravelly sand-loam and silty loam.
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