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DescriptionMedium-sized deciduous tree. Bark very distinctive, smooth, greenish-yellow or yellow, powdery. Thorns straight, up to 7 cm, white, in pairs at the nodes. Leaves often clustered on short lateral shoots, 4-6 pairs of pinnae. Leaflets in 10-17 pairs per pinna, small, pale yellow-green. Flowers in axillary clusters of pale yellow spherical heads. Pods straight, papery with a wavy margin, indehiscent.