The leaf blade of Eugenia sulcata Spring ex Mart, is examined with special attention to the epidermis, using light and electron microscopy (transmission and scanning). The anticlinal walls of the adaxial epidermis are wavy and the external periclinal walls do not have a uniform thickness on account of internal projections. Transmission electron microscopy shows in this wall three distinct layers. Scanning electron microscopy demonstrates that the outer surface of the abaxial epidermis does not exhibit striations. Number and arrangement of subsidiary cells permit the stomata to be classified in the anomostaurocytic type; according to the unequal thickening of guard cells they can be considered graminoid. The leaf blade is dorsiventral and includes subepidermic secretory cavities.
Myrtaceae; leaf anatomy