Stems twining, sparsely appressed-pilose, glabrescent. Leaves ovate, 6-10 by 3½-6 cm, base truncate or slightly cordate, apex acute to acuminate, upper surface glabrous, lower appressed-pilose, especially along the nerves; nerves 6-8 on either side of midrib; petiole 2-3 cm, appressed-pilose. Peduncles in the upper leaf-axils, up to 9 cm long, appressed-pilose towards their apex with yellowish-grey hairs; cymes umbellate, few-flowered. Pedicels 2-4 mm, rather densely appressed-pilose. Bracts 8-12 mm long, linear to filiform, with a narrow acumen, hairy beneath, glabrous above. Sepals nearly equal in length, ca 6½ mm long, densely appressed-pilose outside; 2 outer ones elliptic-oblong, obtuse, mucronulate; sepal 3 broader, with one glabrous margin; two inner sepals broadly ovate to orbicular, with two glabrous margins. Corolla 5-parted, whitish outside, purplish or violaceous inside; tube ca 11 mm long, glabrous; lobes linear, recurved and twisted, ca 24 by 3 mm; midpetaline bands sericeous outside towards the apex, and there with two glabrous wings. Filaments with slightly dilated, thick, papillose base. Ovary glabrous, 2-celled. Fruit unknown.
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