Somaye Zarei - Researcher, Persian Gulf Research & Studies Center, Persian Gulf University, Bushehr,Iran
Ahmad Reza Khossravi - Associate professor, Faculty of Science, Shiraz University, Shiraz, Iran
Mostafa Mohammadi - Young researchers and elite club,Bushehr branch,Islamic azad university, Bushehr;Iran
farshad dargahi - Young researchers and elite club,Bushehr branch,Islamic azad university, Bushehr;Iran

The geographic distribution of the four selected tribes, Anthemideae, Calenduleae, Inuleae and Senecioneae (Asteraceae family) in Iran has been analyzed by using a dataset of 9633 georeferenced observations. All the observations and the richness of species was mapped with the point-to-grid richness analysis tool DIVA-GIS, using a 10 × 10 kilometer grid cell and the circular neighborhood option with a 50 km radius in all around Iran. Species of four selected tribes are distributed in the whole Iran. The 4 tribes in Iran have 54 genus, 269 species, 101 endemic species and 92 rare species.High species richness occurs in Fars, Tehran, East Azarbaijan, West Azarbaijan,Esfahan and Mazandaran. Ten 50 × 50 kilometer grid cells are needed to capture all the species which have the most conservative importance. The largest tribe between four tribes is Anthemideae with 143 species.

geographic distribution, Asteraceae, tribes, GIS, species richness