Leaves widely spaced; petiole 3-12 cm; leaf blade abaxially light green, adaxially inflexed upward near apex of petiole and marginally, polymorphic, broadly ovate, (4-)7-12(-17) × (3-)5-8(-16) cm, glabrous, base usually cordate, sometimes truncate, margin usually ± deeply or irregularly 3-5(-9)-lobed, apex commonly acute; basal lobes auriculate-orbicular or hastate, sometimes sinuous; apical lobe larger; basal veins 5, widely divergent, midvein with 1 or 2 pairs of lateral veins, veins slightly prominent, reticulate veins inconspicuous. Panicle solitary on peduncle, (3-)5-16(-27) cm, 1-3-forked, cincinni rather few flowered. Flowers small, bisexual; plants polygamous, dioecious, or monoecious; flower buds yellow-green, subglobose. Calyx lobes ovate, 1.5-2 mm, glabrous or outside sparsely puberulent, coherent at base, margin sometimes ciliate. Petals white, ovate to narrowly ovate, ca. 2 mm, united at base, apex obtuse or rounded. Filaments filiform, slightly widened at base; anthers oblong-ovoid, longer than filaments. Ovary ellipsoid or narrowly conical, 1.5-3 mm, slightly 4-ribbed, glabrous; style exserted, terete. Samara golden, shiny, suborbicular or obcordate, 2-3.5 × 1.5-3 cm, with persistent calyx, with 1-8 mm elongate fruiting axis above calyx. Fl. May-Nov, fr. Oct-Mar.
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Much branched with twining terete stems, which often preserve their freshness after the fall of the leaves and are loaded with fruits then, 2-5(-9) m. Leaves widely spaced, polymorphous, broadly ovate in outline, with a cordate base, generally ± deeply or irregularly 3-5(-9)-lobed, apex generally acutish, lateral lobes acute or obtuse, very rarely entire or almost so, herbaceous, caducous, pale green, (4-)6-12(-17) by (3-)4-7(-16) cm, main nerves 7-9 radiating from apex of the petiole, slightly raised beneath, veins rather obscure; petiole (3-)5-12 cm. Panicles solitary on 3-5(-10) cm long peduncles, 1-2(-3)-forked, cincinni rather few-flowered, glandular-puberulous or almost glabrous, 5-10 cm, accrescent in fruiting stage. Flowers distant from each other along rachis, on short pedicels (1 mm, accrescent to 5 mm in fruit). Calyx lobes 2 mm. Petals white, 2.5(-3.5) mm. Fruit obovate-elliptic in outline, the wings included, apex emarginate, base cuneate and suddenly contracted to a kind of foot up to 2 mm, on the very base of which the persistent calyx is found, wings glossy yellow or light stramineous colour, tipped by the accrescent style which remains green and fleshy for a long time.
A climber. It is a herb. The leaves are widely spaced. They are broadly oval and 7-12 cm long by 5-8 cm wide. They are light green underneath. The flower stalks are 5-16 cm long with a few small flowers. The petals are white.
Primary and secondary (also seasonal, deciduous) forest edge, scrub jungle, bamboo forest, hedges around villages, open waste places, even on open limestone rock, generally at low elevations, rarely up to 1000 m, scattered.
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It is a tropical plant. It usually grows below 1,000 m altitude. In Yunnan.
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