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Herbs twining or sometimes prostrate, with ± densely retrorse pilose axial parts. Stems 3-6 m, sometimes rooting at nodes. Petiole 2-18 cm; leaf blade ovate or circular, 5-15 X 3.5-14 cm, abaxially densely short, soft, pubescent, adaxially ± sparsely pubescent, base cordate, margin entire or ± 3-lobed, apex acuminate or abruptly acuminate. Inflorescences dense umbellate cymes, several flowered; peduncle 4-20 cm; bracts linear, sometimes lanceolate. Pedicel 2-5(-8) mm. Sepals subequal, 1.4-2.2 cm, gradually linear-acuminate apically, glabrous to appressed pilose; outer 3 lanceolate to broadly lanceolate; inner 2 narrowly lanceolate. Corolla bright blue or bluish purple, aging reddish purple or red, with a paler center, funnelform, 5-8 cm, glabrous. Stamens included. Pistil included; ovary glabrous. Stigma 3-lobed. Capsule ± globose, 1-1.3 cm in diam. Seeds ca. 5 mm. 2n = 30*.
Perennial climbing herb. Leaf lamina ovate in outline, entire or prominently 3-lobed, cordate at base, lobes acuminate; pilose to glabrescent. Sepals lanceolate, softly pubescent or glabrescent. Corolla 50-80 mm long. Flowers blue or mauve-purple, often tinged red.
A vine. The vine is less than 2 cm across. The leaves are 3-12 cm long by 3-12 cm wide. They are hairy. The flowers are in a group on stalks 10-20 cm long.
