Cassia tora L., a common herbaceous legume found in tropical and subtropical regions, exhibits notable seed polymorphism. This study investigates the morphological diversity of seeds in Cassia tora, categorizing them into three distinct morphological types. Morphometric parameters such as length, width, shape, color, surface texture, weight, dormancy, viability, and germination were analyzed. The results show significant variation among categories, which may contribute to ecological fitness, dispersal strategies, and adaptability. Understanding seed polymorphism is essential for assessing the ecological success and invasiveness of this species, particularly in biodiverse regions like the Sariska Tiger Reserve.