Shrubs to tall trees, pubescent, but leaves, petals and stamens glabrous. Leaves 20-25 cm long including petiole; stipules caducous; leaflets in 5-8 pairs, elliptic to obovate or ovate, 4-8 cm long, 3-4 cm wide, often slightly larger distally, rounded at the apex, discolorous. Inflorescence of 50-80 flowers, 25-35 cm long; pedicels c. 30 mm long; bracts and bracteoles persistent until anthesis. Petals 15-20 mm long. Fertile stamens 7 with 3 adaxial staminodes; filaments unequal; shorter adaxial ones c. 5 mm long; longer abaxial ones c. 15 mm long, sigmoidally curved, with a swelling above the mid-point; anthers subequal, 2-3 mm long. Pod compressed-cylindric, with or without transverse grooves, 35-50 cm long, 1.5-2 cm diam. Seeds transverse, 1-seriate, c. 7 mm long, each enveloped in a dry suberous disc, smooth, reddish.
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