Description from Flora of China
Illigera platyandra Dunn; ?I. yaoshanensis K. S. Hao.
Lianas. Stem angulate, glabrous. Leaves 3-foliolate; petiole 5-7(-14) cm, striate, glabrous; leaflets: petiolules 1-2.5 cm, glabrous; blade ovate to ovate-elliptic, 6-15 × 3.5-7 cm, papery to subleathery, both surfaces glabrous, lateral veins 4- or 5-paired, veinlets conspicuous on both surfaces, base rounded to subcordate, apex abruptly acuminate. Cymose panicles axillary, lax, ca. 20 cm. Flowers green-white; bracteoles small; flower buds globose, 2-5 mm in diam. Outer tepals elliptic-oblong, 5-6 × 2-2.5 mm, pubescent. Inner tepals similar to outer ones but narrower and abaxially conspicuously densely shortly white pubescent. Filaments curved around anthers in bud, tepal-like, lower part complanate, 1.5-2.5 mm wide, filiform toward apex, ca. 2 × as long as tepals when open, pubescent; appendages stipitate, clavate, ovoid, ca. 0.6 mm, inserted abaxially on broad base of filaments and covered by them. Ovary ca. 3 mm, tetragonous, constricted at apex, glabrous; style ca. 2.5 mm, villous; stigma dilated, cristate. Interstaminal glands absent. Fruit 3-5 cm in diam., 4-winged; large wings 1.5-2.5 cm wide, smaller wings 0.5-1.4 cm wide. Fl. Apr-Dec, fr. Jun-Nov.
The roots and stems are used medicinally for relieving foot pain and pain from rheumatism and headaches.
Sparse or dense forests; (200-)300-1300 m. Guangdong, Guangxi, Hainan, Yunnan [Cambodia, Indonesia, Malaysia, New Guinea, Philippines, Thailand, Vietnam].