11. Elaeocarpus dubius A. Candolle, Bull. Herb. Boissier, sér. 2. 3: 366. 1903.
显脉杜英 xian mai du ying
Trees evergreen, to 25 m tall. Branchlets slender, silvery-gray pubescent at first, glabrescent. Leaves crowded at twig apices; petiole 1-2 cm, rarely to 3 cm, slender, glabrous, swollen at both ends; leaf blade oblong or lanceolate, 4-8 × 2-2.5 cm, rarely to 10 × 4 cm, thinly leathery, glabrous, lateral veins 8-10 per side, conspicuously raised on both surfaces, veinlets dense, prominently raised abaxially, not glandular, base broadly cuneate or obtuse, margin crenate, apex acute or acuminate, acumen obtuse. Racemes in axils of fallen and current leaves, 3-5 cm, 4-7-flowered; peduncles silvery gray-white pubescent. Pedicel ca. 5 mm, silvery-white pubescent. Flower buds ovoid-oblong. Sepals 5, conspicuously keeled, narrowly lanceolate, 7-8 × ca. 2 mm, abaxially minutely puberulent, apex acute. Petals 5, oblong, ca. as long as sepals, 7-8 × ca. 2.5 mm, both surfaces gray-white pubescent, upper 1/3 laciniate; segments 9-11. Stamens 20-23; filaments ca. 1 mm; anthers ca. 3.5 mm, with awn ca. 1.5 mm. Disk 10-lobed, pubescent. Ovary 3-loculed, pubescent; style ca. 5 mm. Drupe ellipsoid, 1-1.3 cm × 6-8 mm, glabrous; endocarp bony, ca. 1 mm thick. Fl. Mar-Apr, fr. Apr-Jun.
Low-elevation forests; 600-700 m. Guangdong, Guangxi, Guizhou, Hainan, Yunnan [Vietnam].