Abstract
Nucleotide sequences for two chloroplast genome regions, the rbcL gene and the trnL-trnF spacer region, were obtained for 22 genera and 30 species representing all major lineages of Laurales, with a special sampling effort being made in the phylogenetically problematic Monimiaceae sensu lato. Magnoliaceae, Winteraceae, Austrobaileyaceae, and Saururaceae were used as outgroups. A morphological character matrix for the same taxa was compiled and includes new floral-anatomical data for Siparunaceae, a lineage traditionally placed in Monimiaceae. Phylogenetic analyses of the molecular and morphological data based on maximum parsimony reveal that Siparuna and its sister taxon, the monotypic West African genus Glossocalyx, are not closely related to the remaining Monimiaceae, supporting the view that the Monimiaceae in the wide sense are polyphyletic. Based on morphology and chromosome numbers, Siparuna forms a clade with Atherospermataceae and Gomortegaceae, while based on rcbL sequences, it is in a clade with...
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