A herbaceous twiner (or prostrate ?). Stems slender, sparsely pilose, glabrescent. Leaves sparsely pilose, lanceolate to linear-lanceolate or sometimes oblong, (2.5-)5-7 cm by 6-10 mm, rounded at the base, acute and mucronulate at the apex, entire, adpressed-pilose at the margins, otherwise sparsely pilose to glabrous; lateral nerves 4-6 on either side of the midrib; petiole 3-5 mm long. Flowers in 1-flowered cymes. Peduncles axillary, 2-4(-6) cm long, slender, sparsely pilose to glabrous; pedicels thickened towards their top, minutely warty, 6-10 mm long. Bracts minute, subulate. Flower-buds conical, acute. Sepals equal in length or the inner ones a little shorter, 12-15 mm long, the two outer ones rather thick, ovate-lanceolate to narrowly ovate, attenuate or acuminate towards the acute apex, minutely warty and sparsely short-pilose, the three inner ones membranaceous, oblong, cuspidate, smooth and glabrous or only the third sepal warty at the base. Corolla funnel-shaped, probably c. 2-27 2 cm long, glabrous, yellow. Stamens included; filaments inserted c. 2.5 mm above the corolla-base, 6-7 mm long, shortly hairy at the base. Ovary pilose; style included, c. 8-10 mm long, glabrous.
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