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By: Shabestari, Elaheh Sadat Bagheri - Attar, Farideh - Riahi, Hosein - Sheidai, MasoudType: ArticleIn: Acta Botanica BrasilicaVolume:Series:Issue:Date: 2013-12-01Page Range:Publication Info:Subjects: Centaurea exine ornamentation light microscopy Palynology Scanning electron microscopy