. The history of the cowpea and its introduction into America . Plant of Vigna catjang ( Walp. Bui. 102, Pt. VI, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate Plant of Vigna unguiculata ( L. i Walp. Bui. 102, Pt. VI, Bureau of Plant Industry, U. S. Dept, of Agriculture. Plate 111.

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