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DescriptionDeciduous trees (in ours). Leaves opposite, 2-pinnate. Flowers purple (in ours) in terminal panicles. Calyx truncate or 5-toothed. Corolla tube curved, the limb ± 2-lipped with 5 rounded subequal lobes; disk thick and cushion-like. Ovary 2-locular. Stamens 4; staminode 1. Fruit a ± circular capsule. Seeds winged.