Universidad Complutense de Madrid
E-Prints Complutense

Phylogenetic relationships of two Cuban spleenworts with unusual morphology: Asplenium (Schaffneria) nigripes and Asplenium pumilum (Aspleniaceae, leptosporangiate ferns)

Impacto

Descargas

Último año

Lóriga, Josmaily y Regalado, Ledis y Prada Moral, Carmen y Schneider, Harald y Heinrichs, Jochen (2017) Phylogenetic relationships of two Cuban spleenworts with unusual morphology: Asplenium (Schaffneria) nigripes and Asplenium pumilum (Aspleniaceae, leptosporangiate ferns). Plant Systematics and Evolution, 303 (2). pp. 165-176. ISSN 0378-2697

[img] PDF
Restringido a Sólo personal autorizado del repositorio

2MB

URL Oficial: https://link.springer.com/journal/606



Resumen

The infrageneric classification of Asplenium, the most species-rich genus of ferns, is notoriously difficult as a result of extensive morphological homoplasy combined with exceptional morphological disparity. Besides a core Asplenium, 29 satellite genera have been described, but most of them have not been widely accepted. In recent years, molecular phylogenetic studies found most of these satellite genera to be nested in Asplenium, but several morphologically distinct taxa have not yet been included in such studies. One of these elements is the monospecific neotropical genus Schaffneria which is characterized by undivided suborbicular blades, lack of a costa, black stipes, netted veins and single or paired sori. Maximum likelihood and Bayesian phylogenetic inference based on the chloroplast DNA markers rbcL, rps4, rps4-trnS and trnL-trnF indicated a position of Schaffneria nigripeswithin Asplenium. We thus propose to treat Schaffneria as a synonym of Asplenium and adopt the name Asplenium nigripes. With the current sampling, Asplenium (Schaffneria) nigripes is placed sister to A. pumilum, the only species of Asplenium with whitish catenate hairs on its leaves. Despite considerable morphological differences, both species resemble each other in several features including filiform-lanceolate, mostly entire, brown-blackish rhizome scales with a dark-sclerotic center and some marginal projections, a striate, hairy epidermis, echinolophate spore ornamentation with slim microechinate folds forming small lacunae, and Aspidium-type gametophytes.


Tipo de documento:Artículo
Palabras clave:Chloroplast DNA; Greater Antilles; Mesoamerica; Molecular phylogeny; Polypodiales; Satellite genera
Materias:Ciencias Biomédicas > Biología
Ciencias Biomédicas > Biología > Botánica
Ciencias Biomédicas > Biología > Fisiología vegetal
Código ID:43934
Depositado:17 Jul 2017 10:02
Última Modificación:17 Jul 2017 10:02

Descargas en el último año

Sólo personal del repositorio: página de control del artículo