The cotyledons remain on the plant for a long time. The first leaf is paired and small and successive
leaves are larger. The leaves are arranged on opposite sides of the stem; at the top of
the stem leaves are arranged in an alternate fashion. Leaves are 10-20 cm long and
3-5 cm wide (Fig. 1.1). The leaf margin morphology varies from pointed to smooth
and leaf colour varies from light green to dark green, the leaf surface is smooth