白桉 bai an

Trees, medium sized. Bark grayish white, smooth, exfoliating. Young leaves 3 or 4 pairs, opposite, petiolate; leaf blade ovate-lanceolate. Intermediate leaves alternate; leaf blade ovate to triangular, ca. 7.5 cm. Mature leaves; with a slightly weak 2-3 cm petiole; leaf blade broadly lanceolate to lanceolate, 10-13 × 2-4 cm, secondary veins at an angle of ca. 45° from midvein and inconspicuous on both surfaces, apex long and acutely pointed. Inflorescences axillary, simple, umbels 3-7-flowered; peduncle 1.5-2 cm, compressed. Flower buds elliptic, 8-9 mm. Hypanthium 4-5 mm; stipe 0-3 mm; calyptra slightly obtuse conic to slightly acute, shorter than hypanthium. Stamens 5-6 mm; anthers dorsifixed, dehiscing longitudinally. Capsule semiglobose to bowl-shaped, ca. 6 mm; disk broad or narrow; valves 3-5, exserted from hypanthium.

Cultivated in Guangxi [native to N Australia, East Timor, Indonesia, and Papua New Guinea].