A glabrous twiner. Stems slender. Leaves linear, 4-14 cm long or still longer, 2-5 mm broad, obtuse, mucronulate; petiole 4-10 mm; midrib and lateral nerves nearly parallel. Peduncles 1-flowered, 3-5 mm, in fruit up to 12-15 mm. Pedicels 6-9 mm, in fruit up to 15-18 mm. Sepals unequal, the inner ones longer; outer sepal elliptic, ca 6 mm long, inner ones oblong or ovate-oblong, 7 and 8-10 mm long, somewhat longer in fruit, all obtuse, and mucronulate at the apex. Corolla salver-shaped, white, ca 4 cm long (according to BENTHAM up to 7½ cm long). Filaments inserted near the corolla-base (perhaps slightly exserted), hairy at their base. Ovary glabrous. Capsule ovoid-globular, ca 8 mm high, glabrous. Seeds greyish.