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By: Diazgranados, Mauricio - Sánchez, Luis RobertoType: ArticleIn: PhytoKeysVolume: 32Series:Issue:Date: 2013Page Range: 37-48Publication Info: Pensoft Publishers 2013Subjects: Cáchira Colombia Compositae Espeletiinae Espeletiopsis frailejón Millerieae Norte de Santander Páramos