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Phylogenetic Analysis of Phylica L. (Rhamnaceae) with an Emphasis on Island Species: Evidence from Plastid trnL-F and Nuclear Internal Transcribed Spacer (Ribosomal) DNA Sequences

James E. Richardson, Frans M. Weitz, Michael F. Fay, Quentin C. B. Cronk, H. Peter Linder, Gail Reeves and Mark W. Chase
Taxon
Vol. 50, No. 2, Golden Jubilee Part 4 (May, 2001), pp. 405-427
DOI: 10.2307/1223889
Stable URL: http://www.jstor.org/stable/1223889
Page Count: 23
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Phylogenetic Analysis of Phylica L. (Rhamnaceae) with an Emphasis on Island Species: Evidence from Plastid trnL-F and Nuclear Internal Transcribed Spacer (Ribosomal) DNA Sequences
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Abstract

The relationships of the island species of Phylica and other genera in Phyliceae (Rhamnaceae) were evaluated using sequences for the plastid trnL intron, the trnL-F intergenic spacer and the internal transcribed spacers of nuclear ribosomal DNA. Both regions provided nearly identical phylogenetic patterns, so they were analysed as a combined matrix. The genera Nesiota and Noltea were found to be palaeoendemic species within the context of the tribe. The island species of Phylica formed a monophyletic group together with the widespread mainland species, P. paniculata. The plesiomorphic, generalist morphology of this group contrasts with the derived morphological characteristics of the majority of mainland species. However, the group occupies a derived position in the phylogenetic trees, thus indicating either a reversal or more likely the retention of these primitive traits.

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