Canavalia ensiformis, or (common) jack bean, is a legume which is used for animal fodder and human nutrition, especially in Brazil where it is called feijão-de-porco ('pig bean'). It is also the source of concanavalin A.
C. ensiformis is a twining plant up to 1 metre (3.3 ft) in height. It has deep roots, which makes it drought resistant. The plant can spread via long runners. The flowers are pink-purple in colour. The pods are up to 36 centimetres (14 in) long with large white seeds.
The plant is ...
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