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Macroptilium lathyroides

Description from Flora of China

Phaseolus lathyroides Linnaeus, Sp. Pl., ed. 2, 2: 1018. 1763.

Annual or biennial herbs, erect, 0.6-1.5 m tall, sometimes prostrate or twining. Stems densely pubescent. Stipules lanceo­late, 5-10 mm; petiole 0.5-5 cm; leaflets narrowly elliptic to ovate-lanceolate, 3-8 × 1-3.5 cm, abaxially densely pubescent or sparsely pilose, adaxially glabrous, sometimes slightly lobed, base cuneate, apex acute. Inflorescences with peduncles 15-40 cm, flowers paired in upper part of rachis. Calyx tubular-cam­panulate; teeth shortly triangular. Corolla purple-red; standard suborbicular, ca. 1.5 cm, with pale claw. Legumes linear, 5.5-10 cm × 2-3 mm, densely pubescent, 18-30-seeded. Seeds brown or with brown and black markings, obliquely oblong, ca. 3 mm.

This species is used as a cover crop.

Cultivated. Fujian, Guangdong, Taiwan (also naturalized) [native to tropical America; widely cultivated and naturalized in the tropics].


 

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