Fibrovascular bundle composed of fibre surrounding amphicribal vascular bundle; xylem composed of spiral,reticulate,and border-pitted vessels and xylem parenchyma some of which containing prismatic crystals of calcium oxalate. Collenchyma,2 to 3 layer of cells, located in the central part of midrib beneath lower epidermis. Lower epidermis,a layer of rectangular cells in sectional view or wavy-walled cells in surface view with anomocytic type of stomata (Fig. 2a)