Stem Bark 

Stem bark of C. arborea is of dark grey color, thick and rough having cracks which are usually shallow. It is odorless and has astringent taste. In transactional view, the bark shows 8 to 16 layers of rectangular shaped, brownish black colored, thick walled cork cells. Inside the cork, there are 2 to 3 layers of phellogen which produce phelloderm cells centripetally. Parenchymatous cells of cortex are multilayered, polygonal to rectangular in shape. Secondary phloem is also present consisting of phloem parenchyma, fibers, vessels and 1 to 2 seriate medullary rays. Phloem parenchyma and cortex cells contain crystals of calcium oxalate. In powder of the bark, thick walled lignified fibers, about 38 to 66 micrometer in length and crystals of calcium oxalate of 10 to 15 micrometer are characteristic  . 

Leaf 

Color of leaf is green, shape is obovate and apex is acuminate with crenate margin. Length and width of fresh leaf is 15-22 cm and 7-12 cm respectively with 0.1-1.8 cm long petiole. In transverse section of leaf through midrib, thick cuticle over the epidermis is prominent on both adaxial and abaxial sides. Inside the epidermis, there is collenchyma tissue, a single layer of palisade cells and few layers of spongy mesophyll cells. In the midrib, one large central and two relatively lateral bundles of vascular tissue embedding in the spongy mesophyll cells are found. These vascular bundles are surrounded by lignified sclerenchyma fibers. Xylem tissue consists of fibers, tracheids, parenchyma and vessels forming the shape of a cup and phloem surrounds it. Stomata are of anisocytic type. Leaf constants per mm2 area are: Stomata number, upper surface (28.00), lower surface (188.00); Stomatal index, upper surface (8.26), lower surface (31.18); Vein-islet number (6.00-8.00); Veinlet termination number (7.00-9.00); Palisade ratio (6.00-8.00 per cell) [3] . 

Fruit 

Fruit is berry type, large and green colored. It has persistent style and calyx and weighs about 100 g. Outermost layer of fruit is epidermis with a waxy covering. Inside epidermis there is collenchymatous hypodermis, inside which loosely packed parenchymatous cells are present having scattered vascular bundles. Some of these parenchyma cells have stone cells which provide mechanical support. Placentaion of ovules is axial with 4 locules