Lianas. Juvenile stems dark green, rooting, creeping on humus soil of forest understories or over bark mosses on trees, back rounded, moniliform or torulose, internodes thickened, 10-20 × 5-7 mm. Petiole 20-25 cm; sheath caducous, membranous; pulvinus ca. 10 mm; leaf blade light green abaxially, green adaxially, black-brown when dry, ovate or ovate-lanceolate, 10-27 × 5-12 cm, subleathery, base obliquely rounded, apex acuminate or caudate, unequally pinnately lobed; pinnae 2 or 3 on each side, or only on 1 side and other side entire, sinuses reaching to 2-3 cm from midrib, sometimes on mature branches some leaf blades pinnately lobed and others entire, or all leaf blades entire; lateral veins 9 or 10 on each side of midrib, ascending obliquely. Inflorescence nearly terminal; peduncle erect, green, robust, 12-14 cm. Spathe early caducous, spreading, light yellow-green, ovate, 14-16 cm. Spadix sessile, pale yellow, cylindric, 12-13 × 2-3 cm, base oblique, apex obtuse. Flowers bisexual. Stamens 4; anthers sessile. Ovary green-white, pentagonal-cylindric, ca. 8 × 4 mm, apex truncate; ovules oblong, with slender funicle, parietal; stigma sessile, yellow-brown, oblong. Berry free, juicy, orange, apex yellow-green, obconic, ca. 6 × 4 mm, 4-6-angulate. Fl. Sep-Nov, fr. next Jun-Jul.

● Evergreen forests, mossy forests, on large trees; 1700-2500 m. SE Xizang (Mêdog), Yunnan.