Morphological Study of the Centaurium pulchelum and C.erythraea (Gentianaceae) in Kurdistan region of Iraq

In this study a survey for the species of centaurium hill (gentianaceae) in kurdistan of iraq was presented along with survey and identification of samples preserved in some iraqi herbaria several scientific excursions were made to different regions in kurdistan, and a comparative study was conducted on the vegetative and reproductive parts. these have been reinforced by graphs and figuers. the present study dealt with the ecology and geographical distribution, and a map was designed for this purpose.the present study specified the real number of the centaurium hill species within the studied area by two species as follow: centaurium erythraea rafn (which was found as c. erythraea subsp. turcicum (velen.) meldris & c. pulchellum (swartz) druce .