2. Helicia obovatifolia Merrill & Chun, Sunyatsenia. 5: 45. 1940.
倒卵叶山龙眼 dao luan ye shan long yan
Trees 6-14 m tall; branchlets, leaves, inflorescences, and flowers rust-colored tomentulose. Petiole 1.5-6 cm; leaf blade obovate, ovate, obovate-oblong, or broadly oblanceolate, 7-28 × 4-15 cm, leathery, glabrescent, base cuneate, margin entire or serrulate to serrate on apical half, apex rounded, abruptly ± acute, acute, or shortly acuminate; secondary veins 6-12 on each side of midvein, raised on both surfaces; reticulate veins conspicuous. Inflorescences axillary, 5-16 cm; bracts of flower pairs ovate, ca. 1.5 mm; floral bracts deltoid, ca. 1 mm. Pedicels free, 1-3 mm. Perianth white to yellow-brown, 1-1.4 cm; limb ovoid, ca. 1.5 mm in diam. Anthers 2-2.5 mm. Hypogynous glands ovoid, free or basally connate, crowded together. Ovary densely pubescent. Style glabrous. Fruit purplish black, obovoid to ellipsoid, 3-5 × 2-3.5 cm, apex apiculate; pericarp 1.5-2 mm thick, leathery. Fl. Jun-Oct, fr. Oct-Dec.
Forests, rain forests, montane evergreen broad-leaved forests, mountain slopes, valleys; 100-1000 m. Guangdong, Guangxi, Hainan [Vietnam].