Abstract
Phylogenetic relationships among the nine species ofCrossostylis (Rhizophoraceae) were elucidated using cladistic analysis of restriction site variations of chloroplast DNA. As a result, this genus was found to comprise two pronounced monophyletic groups as follows:C. biflora, C. grandiflora, C. multiflora andC. sebertii; andC. cominsii, C. pachyantha, C. parksii, C. richii andC. seemannii. Moreover, the monophyly ofC. biflora, C. grandiflora andC. sebertii in the former group and the monophyly ofC. pachyantha, C. parksii, C. richii andC. seemannii in the latter group were also suggested. The molecular tree corresponded well with that inferred from morphological data and no discrepancy was recognized. Many of the floral morphological characters reflected lineage, but all seed coat characters were homoplasious. Evolutionary trends in some morphological characters were optimized on the cpDNA tree obtained. Species from New Caledonia and Polynesia were monophyletic, as were those from the Solomon Islands, Vanuatu and the Fiji Islands. All species endemic to the Fiji Islands made a cluster, and this suggests that speciation occurred from a single ancestral species on the Islands.
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Setoguchi, H., Ohba, H. Phylogenetic relationships inCrossostylis (Rhizophoraceae) inferred from restriction site variation of chloroplast DNA. J. Plant Res. 108, 87–92 (1995). https://doi.org/10.1007/BF02344310
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DOI: https://doi.org/10.1007/BF02344310