Lianas. Branches dorsiventrally compressed, to 3 cm in diam., internodes short. Leaf blade ovate in outline, 30-55 × 22-36 cm, leathery, base obtuse, apex acute, pinnately divided; pinnae 6-10 or more per side, reaching midrib or nearly so, linear-falcate, base decurrent, apex truncate; primary lateral veins usually 2-4, equally strong, parallel, along midrib with perforations (8-20 × 2-5 mm), pinnae at middle of leaf 15-21 × 1-5 cm. Inflorescences terminal on lateral branches, solitary, erect; peduncle robust, cylindric, 12-20 × 1-1.6 cm. Spathe unknown. Spadix sessile, white, cylindric, 10-17 cm, 2-2.5 cm in diam. at base. Ovary cylindric, 6-8 × ca. 2 mm; ovules many, oblong, funicle long; style broadly conic; stigma circular. Fr. Nov-Dec.

Dense tropical forests, on trees or over stones; below 1300 m. Guangxi, Hainan, Yunnan [N Laos, N Vietnam].