Korea Flora: A perennial vine, with sparse white hairs on leaves and almost hairless otherwise. Root spreads horizontally, with new shoots emerging sporadically. Main stem greenish-purple with ridges and long hairs at the nodes, spreading vigorously as it climbs other plants. Leaves alternate and palmately compound with 5 leaflets. Leaflets rhombic or elongated ovate with toothed margins. Central leaflet, including its petiolule, 4-8cm long and 2-3cm wide, with hairs on the veins of the upper surface.  Corymb-like cyme inflorescence opposite to the leaves, initially divided into 3 parts, and 8-15cm long. Flowers pale green in color. calyx small, with 4 petals and 4 stamens, and 1 pistil. floral disc ired. capsule fruit round, ripening to black, 6-8mm in diameter, with a lateral split in the upper half. Seeds 4mm long.

Flowering: July-August,   

Distribution: Jeju and southern islands

 

Japan Flora: Herbaceous vine with much-elongate rhizomes; stems much elongate, branched, stri­ate, the young parts furfuraceous, short-puberulent, purplish, flat, the tendrils usually bifid; stipules ovate-deltoid, scarious- margined, ciliate; leaves petiolate, pedately 5-foliolate, the terminal leaflets narrowly ovate or oblong, 4-8 cm. long, 2-4.5 cm. wide, short-acuminate, mucronate, acute at base, with shallow undulate, spreadingly mucronate teeth, puberulous on the midrib on both sides, the petiolules 1-3 cm. long, the lateral leaflets smaller; inflorescence with short granular hairs; flowers short-pedicellate, about 5 mm. across; petals 4, green, deflexed, deltoid-ovate, about 3 mm. long, obtuse with an in­flexed tip, granular outside; disc yellowish or reddish; fruit globose, black; seeds on the back with broad transverse raised ridges on each side and with a narrow scarcely impressed longitudinal band. July-Aug. Thickets and hedges in low­lands and hills; very common.

Ryukyus, China, India, and Malaysia.