Evergreen tree, up to 15 meters tall, hairless. Branches gray or brown, thornless; branchlets slender. The first true leaf in the seedling stage is a pinnate compound leaf. When it grows up, the small leaves degenerate and the petiole becomes a petiole. The petiole is leathery, lanceolate, straight or slightly sickle-shaped, with both ends gradually narrowing and the apex slightly. Blunt, hairless on both sides, with obvious longitudinal veins. The inflorescence head is spherical, the flowers are golden yellow, slightly fragrant; the pods are flat, with 2-8 seeds, oblate oval. The flowering period is from March to October, and the fruiting period is from August to December.
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