(Fundação de Amparo à Pesquisa do Estado de São Paulo) A new method for analyzing a living being chemical compositions is tested in Andean plants and attest the genesis of species by means of geographic isolation. Scientific article published August 2017 by Brazilian researchers is based on the analysis of chemical compounds which express specific biogeographic trends at the evolutionary process, validating a Smithsonian hypothesis on the evolution of the genus Espeletia in the process.