长豇豆 chang jiang dou

Dolichos sesquipedalis Linnaeus, Sp. Pl., ed. 2, 2: 1019. 1763; Vigna sinensis subsp. sesquipedalis (Linnaeus) Van Esel­tine; V. sinensis var. sesquipedalis (Linnaeus) Körnicke ex Ascherson & Schweinfurth.

Twining herbs, 2-4 m. Legumes 30-80(-90) cm, pendu­lous, slightly fleshy and inflated when young. Seeds 8-12 mm. Fl. and fr. Jun-Aug.

Widely cultivated in China [native to tropical Asia; widely culti­vated in tropical regions of Asia, Africa, and America].

Dolichos sesquipedalis was originally described from material of American origin, but this was presumably cultivated material originally introduced from tropical Asia as all related taxa are from the Old World.

This taxon is used as a vegetable.