Smilax macrophylla Roxburgh.

Vines climbing, large. Stem branched, to 10 m, woody; branches smooth or sparsely prickly. Petiole 1.6--3 cm, narrowly winged for 1/2--2/3 its length; abscission zone subapical; tendrils well developed. Leaf blade ovate to suborbicular, 12--23(--26) × 8--14(--20) cm, main veins 7. Inflorescence of (1 or)2 or 3 umbels, 1.5--4 cm, basally prophyllate; peduncle 1.3--3 cm, proximally articulate when inflorescence of 1 umbel; umbels of both sexes 12--40-flowered, base thickened. Male flowers: outer tepals 5--6 × ca. 1.5 mm, inner ones much narrower. Female flowers: tepals slightly smaller than male ones; staminodes 3. Berries dark red, ellipsoid-globose, 0.9--1.2 cm in diam. 2 n = 64, 96, 128.

Forests; near sea level to 1500 m. Hainan [India, Myanmar, Nepal, Thailand, Vietnam].