- Superpáramo plant species diversity and phytogeography in Ecuador2005 | Faculty of Science
- Mediterranean type of climate and vegetation2023 | Faculty of Science
- Typification of the name Orobanche canescens C. Presl (Orobanchaceae) with taxonomic notes.2009 | Faculty of Science
- Geographic flora elements in the superpáramo of Ecuador2007 | Faculty of Science
- The Andes2003 | Faculty of Science
- The Andes2003 | First Faculty of Medicine, Faculty of Mathematics and Physics
- Additions to the lichen family Pannariaceae in Ecuador2010 | Faculty of Science