Dactylium vagum Griffith; Erythropalum populifolium Masters; E. vagum (Griffith) Masters.

Lianas, 5-10 m tall, glabrous. Branchlets with ± persistent acute bud scales at base, with axillary tendrils. Petiole 3-10 cm; leaf blade ovate, oblong-ovate, or triangular-ovate, 8-20 × 4-15 cm, papery to ± leathery, base obtuse, truncate, or ± cordate, and usually peltate, apex acuminate; basal veins 3 or 5, abaxi-ally prominent, adaxially impressed. Cymes 6-18 cm, many-flowered; peduncle 4-10 cm. Pedicel filiform, 2-5 mm. Calyx cupular, 5-dentate, ca. 1 mm. Petals white, 1.5-2 mm. Stamens with tufts of hairs on either side. Disk elevated. Drupe ellipsoid to obovoid, 1.5-2.5 × 0.8-1.2 cm, crowned by persistent calyx; dehisced segments eventually recurving to display bright red inner surface. Seeds indigo blue, broadly ellipsoid. Fl. and fr. Mar-Sep.

Alluvial and riverine forests; 100-1500 m. Guangdong, Guangxi, S Guizhou, Hainan, SE Xizang, Yunnan [Bangladesh, Brunei, Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Philippines, Thailand, Vietnam].