http://orcid.org/0000-0002-4804-7655
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Abstract
A new species from the Andean region of northwestern Argentina is described and illustrated: Sisyrinchium humahuacense. This species can be distinguish from its closest related species by three main characters: the presence of a conspicuous horizontal rhizome, the colour of the flowers and the presence of rudimentary leaves not splitting in fibers. A phylogenetic analysis based on DNA sequences supported the inclusion of S. humahuacense within the genus and as part of the section Segetia. Also, a key to species to identify S. humahuacense is presented herein.
Acknowledgements
The authors thank the Director of Instituto Darwinion (IBODA-CONICET) for photographs and kind support and to Francisco Rojas for the illustration of the species. We also thank L. Giussani and S. Arroyo-Leuenberger for useful comments on earlier drafts of the manuscript. This study was supported by CONICET (Argentina), grants from the National Geographic Explorer project. Finally, our thanks to the reviewers and editor for improving this manuscript.