Vigna caracalla is a leguminous vine from the family Fabaceae, originating in tropical South America and Central America. The species is named caracalla, meaning that it comes from Caracas in Venezuela. That this perennial vine has fragrant flowers is a common misconception (though there may be hybrid varieties as such) - said to be reminiscent of hyacinths - with a distinctive curled shape, giving rise to the common names corkscrew vine, snail vine, snail creeper, or snail bean.