Description from Flora of China
Trees, 18-30 m tall. Branchlets terete, glabrous. Leaves alternate, rarely subopposite; petiole 6-10 mm; leaf blade adaxially dark green, shiny, broadly elliptic, rarely ovate-elliptic, 7-12 × 3-5.5 cm, papery to slightly leathery, abaxially glabrous or pubescent on veins, lateral veins 5-7 pairs, base broadly cuneate to subrounded, apex acuminate to long acuminate. Panicles 3.5-8 cm; ultimate branches puberulous. Floral tube (5 or)6-merous, ca. 5 mm, with 10-12 dark veins; sepals ca. 2 mm, adaxially glabrous, annulus present; epicalyx absent. Petals white, oblong, ca. 9 mm including claw ca. 2 mm, base acute. Stamens 18-28, dimorphic. Ovary glabrous. Capsules oblong-globose, 8-11 × 6-9 mm, 5- or 6-valved. Seeds including wing 5-7 mm. Fl. Apr-May, fr. Jul-Oct.
● Forests, forest margins, limestone mountains. Guangdong, Guangxi, Jiangxi.