Description from Flora of China
Lianas. Stem striate, glabrous. Leaves 3-foliolate; petiole ca. 9 cm, glabrous except villous at joint connected with petiolules; leaflets: petiolules 1-2 cm, sparsely villous; blade orbicular, 10-11 × ca. 9 cm, thickly papery or subleathery, abaxially puberulent on veins, adaxially glabrous, lateral veins 6- or 7-paired, conspicuous on both surfaces, veinlets lax, conspicuous abaxially, base subcordate, apex mucronate. Cymose panicles axillary, lax, large. Flowers unknown. Fruit 7-9 cm in diam., 2-winged, wings 3-4 cm wide. Fr. Mar.
More field work and collections are needed to establish the status of Illigera orbiculata.
● Waterside forests; ca. 600 m. S Yunnan.