Anatomical and Comparative study of selected wild species from the family solanaceae in Iraq

Abstract

Wild species of four Iraqi Solanaceae family were compared anatomically. These species include Solanum nigrum,Physalis alkekengi,Withania somnifera,Lycium barbarum,.The present study cover anatomical characters of leaf epidermis, venation and petioles. The study reveals that vertical sections of leave has important taxonomical characters specially mesophyll tissue.These tissues shaw variations in number of palisaid and spongy layers. Lycium barbarum can be distinguished by its two to three layers of palisaid cells. Sections in the leaf mid veins tissue varies between the species studied .These veins were bicollateral.Sections in petiol also show variations in their outline shapes and in their vascular arc.