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A Synopsis Of Melanthiaceae (Liliales) With Focus On Character Evolution In Tribe Melanthieae, Wendy B. Zomlefer, Walter S. Judd, W. Mark Whitten, Norris H. Williams
A Synopsis Of Melanthiaceae (Liliales) With Focus On Character Evolution In Tribe Melanthieae, Wendy B. Zomlefer, Walter S. Judd, W. Mark Whitten, Norris H. Williams
Aliso: A Journal of Systematic and Floristic Botany
Melanthiaceae s.l. comprises five tribes: Chionographideae, Heloniadeae, Melanthieae, Parideae, and Xerophylleae—each defined by distinctive autapomorphies. The most morphologically diverse tribe Melanthieae, now with seven genera, had not been subject to rigorous phylogenetic character study prior to the current series of investigations that also include an overview of the family. Data from our publications and studies underway are here assessed and integrated, providing a useful overview of Melanthiaceae, and especially of Melanthieae. The results of parsimony analyses of ITS (nuclear ribosomal) and trnL-F (plastid) DNA sequence data correlate with potentially synapomorphic phenotypic characters for genera of Melanthieae, including habit form, …
Phylogeny Of Agavaceae Based On Ndhf, Rbcl, And Its Sequences, David J. Bogler, J. Chris Pires, Javier Francisco-Ortega
Phylogeny Of Agavaceae Based On Ndhf, Rbcl, And Its Sequences, David J. Bogler, J. Chris Pires, Javier Francisco-Ortega
Aliso: A Journal of Systematic and Floristic Botany
Great advances have been made in our understanding of the phylogeny and classification of Agavaceae in the last 20 years. In older systems Agavaceae were paraphyletic due to overemphasis of ovary position or habit. Discovery of a unique bimodal karyotype in Agave and Yucca eventually led to a reexamination of concepts and relationships in all the lilioid monocots, which continues to the present day. Developments in cytogenetics, microscopy, phylogenetic systematics, and most recently DNA technology have led to remarkable new insights. Large-scale rbcL sequence studies placed Agavaceae with the core Asparagales and identified closely related taxa. Analysis of cpDNA …
Molecular Phylogentics Systematics In Dendrobieae (Orchidaceae), Mark A. Clements
Molecular Phylogentics Systematics In Dendrobieae (Orchidaceae), Mark A. Clements
Aliso: A Journal of Systematic and Floristic Botany
Molecular systematic research, using DNA sequences of the internal transcribed spacer (ITS) region of the 18-26S nuclear ribosomal repeat unit, was conducted on a broadly representative sample of the tribe Dendrobieae. The results provide independent support, in addition to evidence from plastid DNA analysis and morphology, for the phylogenetic reassessment of the taxon. At a broad level, Dendrobieae are polyphyletic with Dendrobium sect. Oxystophyllum being deeply embedded within one of the outgroup taxa, subtribe Eriinae: Podochileae. The remaining taxa form a weakly supported monophyletic group consisting of three major clades, Epigeneium, sister to predominantly Asian and Australasian clades. This author …