Jimenez-Machorro, Rolando, Herbario AMO, Montañas Calizas 490, Lomas de Chapultepec, Mexico City, Mexico
Radins, Jose A., Dirección de Biodiversidad, Ministerio de Ecología y Recursos Naturales Renovables, Posadas, Misiones, Argentina
Insaurralde, Irma S., Misiones 4091, Posadas, Misiones, Argentina
Guimaraes, Leonardo R.S., Instituto de Botânica
de Barros, Fabio, Instituto de Botânica
Tobar, Francisco, University of Costa Rica
Linares, Jose L., Centro Universitario Regional del Litoral Atlántico, Universidad Autónoma de Honduras, La Ceiba, Honduras
Mujica, Ernesto, Jardín Botánico de Pinar del Río, Km 1½ Carretera al Hoyo Guamá, Pinar del Río, Cuba
Dressler, Robert L., University of Costa Rica
Blanco, Mario A., University of Costa Rica
Hagsater, Eric, Royal Botanic Gardens
Chase, Mark W., University of Western Australia, Royal Botanic Gardens
Published Jan 02, 2019 on Dryad.
Cite this dataset
Salazar, Gerardo A. et al. (2019). Data from: Phylogenetic systematics of subtribe Spiranthinae (Orchidaceae: Orchidoideae: Cranichideae) based on nuclear and plastid DNA sequences of a nearly complete generic sample [Dataset]. Dryad. https://doi.org/10.5061/dryad.9b9c1
Subtribe Spiranthinae is the most species-rich lineage of terrestrial Neotropical orchids, encompassing > 500 species and 40 genera. We conducted maximum parsimony and maximum likelihood phylogenetic analyses of DNA sequence data of plastid matK-trnK and trnL-trnF and nuclear ribosomal ITS sequences for 36 genera and 182 species of Spiranthinae plus appropriate outgroups. The results strongly support monophyly of Spiranthinae (minus Discyphus, Discyphinae and Galeottiella, Galeottiellinae) and five major lineages, namely monospecific Cotylolabium (sister to the remaining Spiranthinae) and the Eurystyles, Pelexia, Spiranthes and Stenorrhynchos clades. Eighteen of the 27 genera of Spiranthinae for which more than one species was included in our analyses are monophyletic. Paraphyly of large genera, such as Cyclopogon and Sarcoglottis, resulted from segregation of particular species or groups of species exhibiting minor modifications of structures directly involved in pollination (e.g. nectary, rostellum and viscidium). Conversely, polyphyly has resulted from convergent evolution of floral attributes in distantly related species (e.g. Mesadenus). Some of the morphological characters used traditionally for generic delimitation and in non-molecular cladistic analyses of Spiranthinae are discussed against the evolutionary framework set by our molecular trees, emphasizing putative synapomorphies and problems derived from inappropriate character coding or incorrect homology assessments. Our ancestral area analysis indicates that Spiranthinae originated in eastern South America, with subsequent migrations and secondary radiations in Mesoamerica and North America, plus a derived migration from the latter region to the Old World (Spiranthes).
Combined matrix of Spiranthinae and outgroups (matK-trnK, trnL-F and nrITS)
Interleaved matrix in NEXUS format including nucleotide sequences of matK-trnK (2169 characters), trnL-F (2002 characters) and nrITS (760 characters) regions.