Definition

Noun: * A perennial tropical American vine (Vigna caracalla) cultivated for its distinctive, fragrant flowers. The flowers are arranged in showy racemes and are typically yellow and purple. Their most notable characteristic is that the keel (a part of the corolla) is intricately coiled, resembling a snail's shell. It is also known by the synonym Phaseolus caracalla.

Usage Notes

• Vigna caracalla is the accepted botanical name for this plant. It is primarily used in horticultural, botanical, and gardening contexts.
• The common name for this plant is snail vine or corkscrew vine, which directly references the unique shape of its flowers.
• When used, it typically functions as a singular noun (e.g., ) but can be pluralized as or simply in informal gardening talk.

Examples

• The greenhouse specializes in rare climbers, including the fascinating Vigna caracalla.
• I planted a Vigna caracalla last spring, and its corkscrew flowers have a wonderful scent.
• Vigna caracalla, with its uniquely coiled keel, is a favorite among vine collectors.

Advanced Usage

• In taxonomic discussions, one might reference its historical classification: "The species was once placed in the genus as ."

Variants and Related Words

• Snail vine (n): The most common English name for this plant.
• Corkscrew vine (n): Another common name, also describing the flower's shape.
• Phaseolus caracalla (n): A synonym reflecting an older taxonomic classification.

Synonyms

• Snail vine
• Corkscrew vine
• (botanical synonym)

Related Terms (Not direct synonyms)

• Legume (n): The plant belongs to the legume family (Fabaceae).
• Climber / Vine (n): Describes its growth habit.
• Perennial (n/adj): Describes its life cycle.

Noun

1. 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