Climber, up to 1.5 m tall, stems 1-2 mm diam., pubescent. Leaves linear to linear-oblong, sagittate at base, 7-35 x 1.5-7 mm, pubescent, and grey-green. Flowers 3-10 per extra-axillary cluster, peduncle 2-9 mm long, pedicels 4-10 mm long. Sepals 3.5-9 mm long, pubescent below, glabrous above, reddish green. Corolla tube 5-11 mm long, 2.5-5 mm broad, white to deep red-pink, lobes 2-3 mm long.
Slender climber to 1 m or more, with fibrous roots; sap clear. Leaves opposite, 7-35 mm long, narrow. Flowers cylindrical, 5-11 mm long, at least slightly pubescent outside, pink to red, petals lanceolate.