Carex huancabambica (Cyperaceae), a new species from the Peruvian and Ecuadorian Andes

By

González-Gallego, Luis
Benítez Benítez, Carmen
Reznicek, Anton A., 1950-
Cano, Asunción
Oleas, Nora
Martin-Bravo, Santiago
Jiménez-Mejías, Pedro

Type

Article

Date of Publication

2025-10-31

Original Publication

PhytoKeys

Volume

265

Pages

161--180

Subjects

Andes , Neotropics , new species , phylogenetics , Porocystis , South America , systematics , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.265.161909

 

Abstract

<br> The Huancabamba Depression in Neotropical South America, a natural barrier between the Northern and Central Andes, serves as a refuge for high levels of angiosperm diversity. However, this biodiversity remains understudied, especially in complex and species-rich genera, such as<br> Carex<br> L. (Cyperaceae). This genus is notably underrepresented in taxonomic and systematic research on the Neotropics. In this study, we employed an integrative systematic approach combining molecular and morphological data to elucidate the taxonomic status of several<br> Carex<br> populations from Ecuador and northern Peru, which exhibit morphological affinities with the sect. Porocystis Dumort. (Castanea Clade). We conducted a phylogenetic analysis using two nuclear (ITS and ETS) and one plastid (<br> matK<br> ) DNA regions and carried out a detailed morphological comparison with Neotropical relatives within the section. Both phylogenetic and morphological results supported the systematic distinctiveness of the focal populations. As a result, we describe a new species,<br> Carex huancabambica<br> Gonz.Gallego &amp; Jim.Mejías,<br> sp. nov.<br> and provide its taxonomic treatment. This study contributes to disentangling the biodiversity of the genus<br> Carex<br> in the Neotropics.<br>