As a climbing plant, it grows to a height of 12 metres, but as a shrub it grows to 4 metres tall.[3] It is a vine or semi-climbing shrub with puberulent stems, sometimes reaching 10 cm in diameter. Leaves are elliptical-oblong, 5–16 cm long and 3–8 cm wide, apex acute or obtuse, base wedge-shaped, entire margin, sometimes sinuous, glabrous or pubescent, rough to the touch; petiole 0.2–1 cm long.[4][2]
The flowers emerge from bracts.[5] Racemose inflorescences 8–20 cm long, axillary or terminal, solitary, puberulent rachis, 5-mere flowers on puberulent pedicels supported by a deciduous bract ; calyx tube 0.2–0.7 cm long, glabrous or puberulent, corolla infundibuliform, 1 cm long, puberulent, blue; ovary and glabrous style. Drupaceous fruit completely enclosed in the acrid calyx which acts as wings or floats.
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