Anatomy syudy of epidermal cell for genus Scorzonera L. Compositae (Asteraceae) in Iraq.

Abstract

This research included anatomical study of epidermis of different organs of Scorzonera L. species in Iraq . This characters involved epidermis of cauline and basal leaves ,bracts ,stems and corolla , which most of them are of important taxonomic value to separate the species of this genus such us the variety S. cana var. jacquiniana (C.A.T.Mey)Chamberlain which was separated from another variety and rest species by the shape of anticlinal cell wall of epidermis which was undulate and undulate – strongly undulate , In addition to the striate of cuticle which used to separate the two varieties of S.cana (C.A.Mey)O.Hoffm. , S. incise DC. . S.latifolia (Fisch. Et. Mey).DC. and S.veratrifolia Fenzl. From the rest species of genus Scorzonera . Also the occurrence of many types of crystals can be used to separate the species S.pseudolanata Grossheim from the similar species S. lanata Hoffm. Which the last species was lacking to it.