Herbs twining, with ± densely yellowish hirsute axial parts. Stems sparsely retrorse hirsute. Petiole 3-4 cm; leaf blade cordate, 4.5-5.5 X 3.5-4 cm, yellowish hirsute, apex acuminate. Inflorescences axillary, 1-5-flowered; peduncles ca. as long as petioles; bracts lanceolate, 7-10 mm. Pedicel ca. 1.5 cm. Sepals lanceolate-ovate, subequal, ca. 1.5 cm, abaxially sparsely hirsute, apex acuminate. Corolla reddish purple, funnelform, ca. 5 cm, glabrous outside. Stamens included, very short; filaments glabrous basally; anthers ellipsoid, ca. 4 mm. Disc ringlike. Pistil included; ovary conical, acuminate, 2-loculed, 4-ovulate. Style filiform; stigma 2-globose. Fruit unknown. Fl. Jul.
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