Description from Flora of China
Stems solitary or clustered, to 1.5 m tall, to 6 cm in diam., sometimes short and subterranean. Leaf sheaths 12-20 cm, extended above petioles into 6-15 cm ocreas; petioles 15-100 cm, unarmed or proximal ca. half with widely spaced, recurved, brown spines to 0.5 cm; blades 30-107 cm wide, split into 5-8(-13) segments, mottled light and dark green, with straight sides; middle segment wider than others, deeply split into 2 lobes, these 16-58 cm, 13-30 cm wide at apices, costa terminating in a glandlike structure abaxially at base of split. Plants dioecious. Inflorescences 40-70 cm, erect at first, later pendulous below crown; rachis 0-12 cm, with 1 (rarely 2) partial inflorescences, these branched to 1 order; male rachillae 2-7, 9-14 cm; female rachillae 1-4, 8-24 cm; male flowers borne in clusters, female flowers solitary. Fruits ovoid-globose, slightly 3-sided, 0.9-1.5 × 0.7-1.1 cm, red at maturity, with reflexed perianth.
Lowland rain forests on steep mountain slopes of granite or quartzite rocks; 100-1000 m. Guangxi, Yunnan [Vietnam].