Stems twining, young parts shortly pilose, soon glabrescent to glabrous, afterwards lignescent. Leaves broadly ovate to orbicular, 6-12 by 5-12 cm, broadly cordate at the base, attenuate to shortly acuminate at the apex with an obtusish, mucronulate acumen, glabrous or nearly so and green above, glabrous or shortly pilose on the nerves, minutely glandular and reddish beneath; 6-7 nerves on either side of the midrib; petiole 3-9 cm. Inflorescences axillary, 1-flowered, or cymosely 2-3-flowered; peduncle 1-9 cm long, glabrous or shortly pilose mainly towards the apex. Pedicels 10-35 mm, sparsely short-pilose. Bracts oblong, obtuse, 3-5 mm long, caducous. Sepals slightly unequal in length; two outer ones orbicular to transverse-elliptic, 12 mm long, rounded to shallowly emarginate at the apex, cordate at the base with 2 mm long, fimbriate basal lobes; three inner ones orbicular, 8-9 mm long, rounded at the base, all sparsely pilose or glabrous, the shortly ciliate apex excepted. Corolla funnel-shaped, probably ca 6 cm high, violet; midpetaline bands with minute glands outside; margin fimbriate. Filaments shortly pilose at the base. Ovary glabrous. Capsule unknown.
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