Abstract
Seed coat and fruit development have been studied inVigna catjang Walp. andVigna cylindrica (L.) Skeels. The ovules are crassinucellate, bitegmic and campylotropous. The seed coat, which is contributed by the outer integument, consists of ligniflcd epidermis, hypodermis, and inner parenchymatous layers. The vascular bundle has a post-chalazal extension. The mature pericarp has three distinct zones—the exocarp, mesocarp and the endocarp. The epidermis has papillate cuticle and the hypodermis is poorly lignified. Lysigenous cavities appear in the mesocarp. Taxonomical resemblances withPhaseolus are discussed.
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