Translator Disclaimer
5 February 2019 Hexasepalum nordestinum (Rubiaceae): A New Species from Two Disjoint and Fragmented Areas in Northeast Brazil, with a Key to the American Species of the Genus
Andrea A. Cabaña Fader, Elnatan Bezerra de Souza, Ellen K. de Sousa Brandão, Elsa L. Cabral
Author Affiliations +
Abstract

The genus Hexasepalum (Rubiaceae) is the priority name for Diodella and was recently re-established over the latter taxon. In this study we describe Hexasepalum nordestinum, a new species from northeast Brazil, which occurs in extremely fragmented areas of Ceará and Piauí states and is assessed here as endangered. The new species is compared with its closest relatives and the first taxonomic key to distinguish all species of Hexasepalum from the Americas is presented. A description, illustrations including electron microphotographs of the fruits, seeds, and pollen grains, and details of habitat, ecology, and an evaluation of conservation status are provided.

© Copyright 2019 by the American Society of Plant Taxonomists
Andrea A. Cabaña Fader, Elnatan Bezerra de Souza, Ellen K. de Sousa Brandão, and Elsa L. Cabral "Hexasepalum nordestinum (Rubiaceae): A New Species from Two Disjoint and Fragmented Areas in Northeast Brazil, with a Key to the American Species of the Genus," Systematic Botany 44(1), 203-209, (5 February 2019). https://doi.org/10.1600/036364419X698038
Published: 5 February 2019
JOURNAL ARTICLE
7 PAGES


Share
SHARE
KEYWORDS
Campo sujo
savannas
Spermacoce clade
taxonomy
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top