A comparative Anatomical study of stems epidermis for some species for genera of Agrostideae tribe of Poaceae family in Iraq

Abstract

The current research included study for ten species to genus Agrostis , Alopecurus, Polypogon for Agrostideae tribe.Anatomical study included quantitive and qualtitative characteristics of the stem epiderms, it characterized as two regions , namely the costal zone and inter costal zone and these regions included long cell, short cell and cells of the three short trailers (Silica cell, Cork cell, Crown cell).Stomata which are the other varied forms based on the variation forms of subsidiary cell and the way her cells combined with each other or with short cells.It summarized the result its importance as tools taxonomic conclusive in isolation and separation of species of Agrostideae tribe in Iraq Remained isolated Ag. Stolonifera from Ag. gigantea concerning described Silica cells are associated with the Cork cells the number of cells of (40) ;As well as ensure the epidermis of Ag. stolonifera Crown cells (1-2)cell.