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28 June 2016 Dendrophylax megarhizus (Orchidaceae), a New Species from Mexico
Iwan E. Molgo, Germán Carnevali Fernández-Concha, W. Mark Whitten, Norris H. Williams
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Abstract

Dendrophylax porrectus is a leafless epiphytic orchid occurring in Florida (U. S. A.), the Greater Antilles, Mexico, Guatemala, and El Salvador. Previous morphological and phylogenetic analyses revealed considerable variation across its geographic range. This study examines morphological and molecular variation among populations of D. porrectus. Phylogenetic analyses of sequence data of nuclear (nrITS) and plastid (matK, ycf1) regions revealed several well-supported clades within D. porrectus. Molecular data and morphometric analyses of root thickness and floral parts support the recognition of two species within the D. porrectus clade. Dendrophylax megarhizus is described as a new species from Campeche, Jalisco, Veracruz, and Yucatán states of Mexico. A key to the species of Dendrophylax is presented.

© Copyright 2016 by the American Society of Plant Taxonomists
Iwan E. Molgo, Germán Carnevali Fernández-Concha, W. Mark Whitten, and Norris H. Williams "Dendrophylax megarhizus (Orchidaceae), a New Species from Mexico," Systematic Botany 41(2), 263-274, (28 June 2016). https://doi.org/10.1600/036364416X691795
Published: 28 June 2016
JOURNAL ARTICLE
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