Smilax wallichii

Leaves dark green; petioles 10-15 mm, bent upward above the middle, lower petiole winged for 6-8 mm, wings narrow 2-3 mm wide; tendrils rudimentary in flowering branch, strong and persistent in non-flowering branch;
blades variable in shape and size, broadly oblanceolate to lanceolate, 5-16*2-8 cm, upper surface shining; base obtuse, apex acuminate, trinerved, 3+2 nerved, sometimes 2 lateral nerves present in large leaves not terminating at the apex veinlets distinct in lower surface.

Inflorescence single umbel, bracts single, almost triangular, 3*4 mm, obtuse; 15-20 flowers per umbel in male, 10-15 flowers per umbel in female, receptacle reniform; pedicle always longer than the peduncle.

Staminate flowers light green, perianth 6, arranged in two whorls, inner whorl linear, 5*1 mm, alternating outer whorl lanceolate, 5-6*1.5-2 mm, stamens 6, dimorphic, longer stamens 6 mm long alternating with short stamens 5 mm, anther lobes ca 1 mm long white, spathulate, extrose.
Pistillate flowers light green; perianth shorter than staminate flower, dimorphic, outer almost triangular 2.5*1 mm, alternating inner almost linear, 2.5*0.5 mm; staminodes 3, pointed apex bifurcate, ca 1 mm long; stigma 2, reniform, ca 1 mm long, ovary oval, disc present. Fruit berry, dark green when immature, ca 2 mm in diameter.

As per Flora of China

Vines climbing. Stem branched, terete, 1–2 m, woody; branchlets occasionally zigzagged. Petiole 1–2(–2.5) cm, narrowly winged for 1/5–1/4 its length; abscission zone at middle; tendrils usually present. Leaf blade lanceolate to ovate-oblong, 6–17 × 2–8 cm. Inflorescence of 1(or 2) umbels, basally prophyllate; peduncle 1–1.5 cm, proximally articulate; umbels of both sexes densely 20–30-flowered, base slightly thickened. Male flowers: tepals yellowish green, 3–4.5 × ca. 1 mm; stamens 3–4 mm. Female flowers: tepals 1.5–2 × ca. 0.6 mm; staminodes 6. Berries yellowish red to black, globose, 6–7 mm in diam. Fl. Sep–Mar, fr. Oct–Nov.