Oscar with Diplostephium hartwegii in the páramo, Nariño, Colombia.

Oscar Vargas

B..A.: Biology, Universidad de los Andes, Bogota, Colombia.

M.S.: Biology, Universidad de los Andes, Bogota, Colombia.

  • Thesis:  Preliminary phylogeny of Diplostephium (Astereae, Asteraceae).

Ph.D.: In progress

  • Dissertation research: Systematics and evolution of the genus Diplostephium (Astereae, Asteraceae).

Contact: oscarvargash at utexas.edu


2012 Vargas, O.M. & S. Madriñán. Preliminary Phylogeny of Diplostephium (Asteraceae): Speciation Rate and Character Evolution. Lundellia 15: 1–15.

2011 Vargas, O.M. A nomenclator of Diplostephium (Asteraceae: Astereae): a list of species with their synonyms and distributions by country. Lundellia 14: 32–51.

2006 Vargas, O.M. & S. Madriñán. Clave para la indentificación de las especies de Diplostephium (Asteraceae, Astereae) en Colombia. Revista de la Academia Colombiana de Ciencias Exactas Físicas y Naturales 30(117): 489-494.

To download his publications please visit the website cited below:

Related websites:

Diplostephium webpage

Oscar started in the Ph.D. program in Plant Biology in the Fall of 2009. His main interest is the evolution of the high Andean flora with special emphasis on the Asteraceae family.