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Issue: Vol. 644 No. 3: 16 Apr. 2024
Type: Article
Published: 2024-04-16
DOI: 10.11646/phytotaxa.644.3.4
Page range: 211-219
Abstract views: 145
PDF downloaded: 55

Gynoxys revolutifolia (Senecioneae, Asteraceae): A new species from southern Ecuador

Herbario de la Universidad del Azuay, Universidad del Azuay, Av. 24 de Mayo 7-77 y Hernán Malo, Cuenca, Ecuador, Universität Rostock, Botanischer Garten, Schwaansche Str. 2, 18055 Rostock
Biodiversidad de Ecosistemas Tropicales-BIETROP, Herbario HUTPL, Departamento de Ciencias Biológicas y Agropecuarias, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, Loja 1101608, Ecuador
Instituto Científico Michael Owen Dillon, Arequipa, Perú, Herbario Sur Peruano (HSP), Arequipa, Perú
Herbario de la Universidad del Azuay, Universidad del Azuay, Av. 24 de Mayo 7-77 y Hernán Malo, Cuenca, Ecuador
Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium), Georg-August University of Gottingen, Untere Karspüle 2, 37073 Goettingen, Germany
Eudicots Andes Compositae Loja Taxonomy Zamora-Chinchipe

Abstract

Gynoxys is a very diverse genus of Asteraceae with an Andean distribution from Venezuela to northern Argentina. It comprises about 130 species, 34 of which are recorded in Ecuador. In the present study, we describe Gynoxys revolutifolia, a new species occurring in Ecuador between Loja and Zamora-Chinchipe provinces. The new species is a shrub or treelet characterized by coriaceous leaves with a strongly revolute margin. After an accurate revision of the main Ecuadorian herbaria and field surveys, we provide a comprehensive comparison of G. revolutifolia with the species it was previously misidentified as. We also provide information concerning the chemical composition, distribution range and conservation status of the new species.

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