snail flower
perennial tropical American vine cultivated for its racemes of showy yellow and purple flowers having the corolla keel coiled like a snail shell; sometimes placed in genus Phaseolus • Syn: snailflower, snail-flower, snail bean, corkscrew flower, Vigna caracalla, Phaseolus caracalla • Hypernyms: legume, leguminous plant • Member Holonyms: Vigna, genus Vigna
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