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The genus Primus L. belongs to the Rosaceae family; there are therteen species of prunus which are grown wildly and cultivated in Iraq namly: (P. cerasijea , P. xdomestica , P. armeniaca , P. persica , P. amygdctlus , P. Arabica , P. orientalis , P. kotschyi , P. cardiichomm , P. microcarpa , P. brachypetala , P. mahaleb, P. cerasus],<br /> This study was designed to investigate some of the anatomical features of wood. The species under investigation showed that the secondary wood of all species studied is sem-ring porous wood and the porous aqre not uniformly distributed through out the annual growth ring. The pores are mostly solitary or arranged in a radical chains consisted of (2-5) pores. The vessels thay have a simple perforation plate with spiral and Scalifonn thickness; the cells of axial parenchyma are apotracheal diffuse type.<br /> Generally, the main dimension of vessels. Tracheids, rays and fibers in P. xdomestica and P. cerasus was shown tobe higher than in others species.