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Using a DNA-based tree as the framework, the homology of key taxonomic characters in tribe Cypereae (900 species in 19 genera, the largest of which is Cyperus) is assessed and revisit the question of generic circumscription. Plastid DNA (rbcL gene, rps16 intron, trnL intron and trnL-F intergenic spacer) sequence matrix for 50 species in 19 genera of Cypereae is analysed using the maximum parsimony...
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