|Publication Type:||Journal Article|
|Year of Publication:||2004|
|Authors:||Zhang, X. F., Marchant, A., Wilson, K. L., Bruhl J. J.|
|Journal:||Molecular Phylogenetics and Evolution|
|Keywords:||approximate methods, carpha, DNA-sequences, evolution, likelihood ratio test, maximum likelihood, maximum parsimony, maximum-likelihood, minimum evolution, models, nucleotide substitution, plastid rbcl, rate heterogeneity, schoeneae, shimodaira-hasegawa test, sites, systematics, trnl intron and trnl-trnf intergenic spacer phylogenetic trees|
Within the tribe Schoeneae (Cyperaceae), the relationships between Carpha and its relatives have not been certain. and the limits and definition of Carpha have been controversial. Further, the relationships of species within Carpha have been unclear. In this study. cladistic analyses based on chloroplast trnL intron and trnL-trnF intergenic spacer sequence data were undertaken to estimate phylogenetic relationships in and around Carpha. This study found that Tricniopliles is sister to Carpha; Ptilothrix is sister to Cyathochaeta rather than to Carpha as suggested by some former authors: and Gymnoschoenus is distant from Carpha and its close relatives. The merging, of Schoenoidcs back into Oreobolus is Supported. The findings also revealed the non-monophyletic status of Costularia and of Schoenus, and indicated the phylogenetic relationships of species within Carpha. (C) 2003 Elsevier Inc. All rights reserved.