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Jack bean

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A leguminous plant native to South America, identifiable by its edible large white seeds in a long pod, pink-purple flowers, and spread through long runners.


The plant is grown especially for forage. It is also an important source of concanavalin A and urease.

Scientific name: Canavalia plagiosperma

Other common names:

  • Wonder bean
  • Pearson bean
  • giant stock bean

See also: lectin, concanavalin A.