灰岩棒柄花 hui yan bang bing hua

Small trees, 5-15 m tall, dioecious. Branchlets glabrous. Petiole 2-7 cm; leaf blade oblong-ovate or ovate, (5-)9-19 × 4-9 cm, thinly leathery, abaxially bearded in vein axils, base obtuse, with 2-4 maculate glands, margin serrate, apex acute or acuminate; veins 5-7 pairs. Male inflorescences axillary or subterminal, 6-14 cm, puberulent; bracts triangular, 2-2.5 mm. Male flower solitary, remote along axis; pedicel 1-2 mm; sepals 2 or 4, ca. 4 mm; stamens 100-200. Female flower solitary, axillary; pedicel 2-4 cm; bracts at base triangular, ca. 1.5 mm; sepals 5, triangular, unequal, 2-4 mm, scarcely enlarged in fruit; ovary ovoid, 3-locular, densely yellow villous; styles ca. 1.5 cm, deeply 2-cleft. Fruiting pedicel 6-7 cm in fruit, club-shaped; capsule 3-lobed, ca. 1.5 cm in diam., smooth. Seeds ovoid, ca. 7 mm in diam., brownish marbled. Fl. Dec-Feb, fr. Apr-May.

Evergreen forests, commonly on limestone hills. Guangxi, S Guizhou, E and S Yunnan [N Vietnam].