Which of the following is not a characteristic feature of Fabaceae
A. Corolla 5, polypetalous, anterior large and outermost
B. Descending imbricate, 10 stamens, diadelphous, ovary superior
C. Sepals 5, gamosopalous, imbricate aestivation, placentation marginal
D. Monocarpellary, ovary superior, style long, slightly bent at the apex