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DescriptionTree to 35 m tall. Bark not fissured. Leaves in clusters at ends of branches; lamina 8-30 cm long, usually narrowly obovate to obovate; base cuneate; margin entire; apex generally acute or acuminate. Inflorescences cauline, usually unbranched racemes, sometimes covering the entire trunk. Flowers zygomorphic, 5-6 cm in diameter. Calyx-lobes 6, broadly ovate. Petals 6, pink to red. Androecium prolonged on one side into a flat hood, with a stamen-free area between the staminal ring and the hood proper, the hood white or pale yellow tinged with pink externally, the ring stamens with white filaments and white or pale yellow anthers, the hood staminodes often white at the very base, pink for most of length, and yellow at apex, sometimes white for most of length and yellow at apex. Ovary 6-locular. Fruits indehiscent, spherical, 12-25 cm diameter. Seeds embedded in pulp, the pulp oxidizing bluish-green when exposed to air.