Herbaceous twiner. Leaves usually lobed. Flowers in axillary, peduncled, few-to several-flowered monochasial cymes, often secund. Sepals 5, subequal, with awn-like appendages. Corolla narrowly tubular at the base, tubular or urceolate above, slightly curved, with 5-toothed mouth. Stamens and style long-exserted; pollen spinulose. Ovary glabrous, 4-locular, each loculus with one ovule; style 1, filiform; stigma bicapitate. Capsule 4-locular, 4-valved, with up to 4 glabrous seeds. This monotypic genus has usually been considered a part of Ipomoea sect. Quamoclit, but the curved corolla and long-exserted genitalia are very distinctive.
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