A woody twiner. Young branches tomentellous, adult ones glabrescent or glabrous. Leaves elliptic, c. 8-12 by 4-7 cm, rounded at the base or very shortly attenuate into the petiole, abruptly acuminate and mucronulate at the apex, glabrous or nearly so above, rather densely pilose beneath; lateral nerves 5-6 on either side of the midrib; petiole c. 2-3 cm long. Inflorescences from the leaf-axils, exceeding the leaves, c. 18-20 cm long; pedicels 2-8 mm long. Bracts white, elliptic to broadly elliptic, at the base very shortly attenuate into the petiole, abruptly acuminate and mucronulate at the apex, bearing the flower a little below their centre, c. 4 by 2-2.5 cm, shortly pilose, mainly on the midrib and at the margins. Sepals c. 3 mm long, two outer ones elliptic, obtuse, three inner ones broader than long, c. 4 mm broad. Corolla funnel-shaped, c. 12-13 mm long, 5-lobed, the lobes a little shorter than the glabrous tube, broadly ovate, the midpetaline areas pilose outside, the glabrous wings irregularly dentate. Filaments pilose at the base. Ovary glabrous; style 1, with 2 short branches; stigmas horse-shoe-shaped, papillose.
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