Revisiting infraspecific classification of Xerodraba patagonica (Brassicaceae) under different sources of evidence

Diego L. Salariato; Ihsan A. Al-Shehbaz

doi:10.14522/darwiniana.2023.112.1149

Autores/as

Diego L. Salariato Instituto de Botánica Darwinion, CONICET-ANCEFNInstituto de Botánica Darwinion (IBODA, CONICET-ANCEFN), Casilla de Correo 22, B1642HYD San Isidro, Buenos Aires, Argentina. https://orcid.org/0000-0002-3253-3755
Ihsan A. Al-Shehbaz Missouri Botanical Garden, 4344 Shaw Boulevard, 63110 St. Louis, Missouri, USA. https://orcid.org/0000-0003-1822-4005

DOI:

https://doi.org/10.14522/darwiniana.2023.112.1149

Palabras clave:

Cruciferae, límites de especies, Patagonia, Tribu Eudemeae

Resumen

Xerodraba (5 spp.) es un género de Brassicaceae restringido a los Andes del Sur y la Patagonia, del cual X. patagonica incluye la subsp. patagonica y la subsp. pycnophylloides. Esta última ha sido reducida recientemente de especie a subespecie por su similitud morfológica con la primera. Sin embargo, para una clasificación taxonómica adecuada de estos nombres (dos especies, una especie con dos subespecies, o una especie sin subespecies), se necesitan estudios adicionales, realizando análisis de diferentes tipos de datos. Aquí, aportamos evidencias para una nueva clasificación de estos nombres contrastando los resultados obtenidos de diferentes análisis filogenéticos, de nicho ecológico y morfológicos. Para ello, analizamos árboles de genes y especies utilizando datos de nrITS y plástidos, comparamos el nicho climático y el rango geográfico de ambas subespecies, y analizamos la variación morfológica asociada a estos nombres. Basándonos en los resultados obtenidos, decidimos sinonimizar a la subsp. pycnophylloides con X. patagonica.

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