An updated phylogeny of Deprea (Solanaceae) with a new species from Colombia: interspecific relationships, conservation assessment, and a key for Colombian species

Abstract

Deprea is a neotropical genus that comprises 51 species. Recent work based on molecular data has explored its monophyly and interspecific relationships, but the relationships amongst Deprea species were not entirely elucidated. The inclusion of more accessions and molecular markers in phylogenetic analysis is likely to produce more supported hypotheses. Therefore, the main objective of this study was to perform a combined phylogenetic analysis of Deprea including seven new samples representing six species and one more DNA plastid marker than in previous studies. In that process, a new species of Deprea from Colombia was discovered and is described and illustrated here. Deprea teresitae Deanna & A. Orejuela, sp. nov. is morphologically similar to D. dilloniana and phylogenetically closely related to D. hawkesii and D. harlingiana. This new species is distinguished by the combination of short calyx lobes, non-mucronate anthers, long staminal filaments and corolla lobes, and elongated appressed fruiting calyx around a subglobose green berry. The new phylogenetic results are presented, including discussion on phylogenetic interspecific relationships, taxonomy, geographic distribution, and conservation status from D. teresitae. The synonymy of Deprea sylvarum subsp. novogranatensis under D. glabra is also proposed and an identification key to the 10 Deprea species distributed in Colombia is included.

Keywords:

• Colombia
• Deprea
• new species
• phylogeny
• Solanaceae
• taxonomic key

Acknowledgements

We would like to thank all the staff at the herbaria listed in Materials and methods that provided images or allowed us to revise the collections of Deprea, to Eduardo Calderón-Sáenz and Sandra Urbano for their valuable assistance in the field, to Laura Ribulgo for preparing line drawings of D. teresitae, to Stacey Smith for allowing RD the use of her molecular lab and for her feedback on this research, to Tiina Särkinen for valuable comments on a previous version of this work, and to Clara Ines Orozco, Andres Felipe Bohórquez, Mauricio Posada, Barry Hammel, and Ricardo Kriebel for providing Deprea photos. We also thank two anonymous reviewers for their comments and suggestions, which improved this manuscript.

Disclosure statement

None of the authors has received or will receive any benefit, financial or otherwise, arising from the direct application of this research.

Supplemental data

Supplemental data for this article can be accessed here: http://dx.doi.org/10.1080/14772000.2018.1483976

Associate Editor: Steven Dodsworth

Additional information

Funding

This work was supported by the International Association for Plant Taxonomy (IAPT) under a grant provided to RD to perform herbaria revision and fieldwork in Colombia; CONICET under Grant PIP 11220170100147CO, and a postdoctoral grant to RD; and SECyT under Grant A Res. 366/16, 113/17. The work of AO was supported by the Dirección de Investigaciones de Bogotá (Universidad Nacional de Colombia) DIB-13574 grant, the Davis Expedition Fund of the University of Edinburgh, Thomas Van der Hammen grant of the Jardín Botánico de Bogotá and Rodolfo Llinás scholarship of the Ceiba Foundation.