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DescriptionTrees or shrubs. Leaves imparipinnate, opposite; leaflets toothed. Flowers in terminal racemes or panicles. Calyx cupular, 5-dentate. Corolla yellow (in ours),orange or other colours in cultivated species. Stamens 4, didynamous; filaments with stalked glands below; staminode 0 or 1. Fruit a linear-oblong capsule. Seeds with hyaline wings.