Please use this identifier to cite or link to this item: http://cicy.repositorioinstitucional.mx/jspui/handle/1003/734
Anatomía foliar comparada y sistemática del clado-trichocentrum con énfasis en cohniella (asparagales: Orchidaceae)
Comparative foliar antomy and systematic of the trichocentrum- clade with emphasis in cohniella (asparagales: Orchidaceae)
WILLIAM ROLANDO CETZAL IX
ELIANA JOSEFINA NOGUERA SAVELLI
GERMAN CARNEVALI FERNANDEZ CONCHA
Acceso Abierto
Atribución-NoComercial-SinDerivadas
CLADISTIC ANALYSIS
COHNIELLA
LEAF ANATOMY
LOPHIARELLA
LOPHIARIS
The genera Cohniella, Lophiarella, Lophiaris, and Trichocentrum are included in the Trichocentrum-clade. These genera are distributed from Florida and Northern Mexico to Southern Brazil and Northern Argentina, growing in tropical deciduous forests or tropical rain forests and thorn scrub forests to pine-oak forest, from sea level to 1 700m. The leaf anatomical structure of 23 members of the Trichocentrum-clade was explored as a source of taxonomic and phylogenetic characters. A total of 11 species of Cohniella, three species of Lophiarella, seven species of Lophiaris, two species of Trichocentrum, and other four species were included as outgroup. Anatomical characters were studied by cross sections and paradermic observations of the middle portion of fresh leaves. Although anatomical characters were fairly homogeneous throughout the clade, twelve vegetative anatomical, phylogenetically informative characters were selected and coded for an analysis that was performed using an exhaustive search (implicit enumeration) implemented through TNT. The strict consensus of 2 692 most parsimonious trees resulted in a poorly resolved polytomy, which however recovers the Trichocentrum-clade with a monophyletic, strongly supported Cohniella nested within it with unifacial leaves and the presence of cellular inclusions in the epidermis as synapomorphies. We concluded that the anatomy characters alone are insufficient to assess the relationships amongst the genera of the Trichocentrum-clade. However, the two synapomorphies recovered for Cohniella strongly support its monophyly when these are analyzed in conjunction with other data sources (e.g., molecular and morphological characters).
2013-12
Artículo
Revista De Biologia Tropical, 61(4), 1841-1858, 2013
Español
Cetzal-Ix, W., Noguera-Savelli, E., Jáuregui, D., & Carnevali, G. (2013). Comparative foliar antomy and systematic of the trichocentrum- clade with emphasis in cohniella (asparagales: Orchidaceae). [Anatomía foliar comparada y sistemática del clado-trichocentrum con énfasis en cohniella (asparagales: Orchidaceae)] Revista De Biologia Tropical, 61(4), 1841-1858
BIOLOGÍA Y QUÍMICA
Versión publicada
publishedVersion - Versión publicada
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