@article {20407, title = {Phylogeny of the Southeast Asian endemic genus Neocinnamomum H. Liu (Lauraceae)}, journal = {Plant Systematics and Evolution}, volume = {290}, year = {2010}, month = {10/2010}, pages = {173-184}, chapter = {173}, abstract = {

A phylogenetic analysis of Neocinnamomum H. Liu and related genera was conducted using psbA\–trnH, trnK cpDNA regions, and the ITS nrDNA segment. Neocinnamomum was confirmed to be monophyletic, and an evolutionary series of inflorescence development within the genus was recognized. The compound thyrse seen in N. caudatum is reduced to the few- to many-flowered condensed inflorescences with a poorly defined branching system seen in most species and ultimately to the 1-flowered inflorescence seen in N. atjehense. Consensus network analysis (CNA) suggested that long-branch attraction is responsible for the observed close relationship between Neocinnamomum and Cassytha L. in a combined analysis of the complete data. In contrast, the sister relationship of Neocinnamomum and Caryodaphnopsis seen in the Bayesian analyses of the partial combined matrix was supported by CNA and is also supported by morphology and wood and bark anatomy. The close similarity of the compound thyrse of less derived Neocinnamomum species to the thyrsoid inflorescences of some Caryodaphnopsis species is also seen as strong support for their affinity.

}, keywords = {Caryodaphnopsis, Cassytha, Consensus network, Lauraceae, Long-branch attraction, Neocinnamomum, Phylogeny}, doi = {10.1007/s00606-010-0359-1}, author = {Wang, Zhi-hua and Li, Jie and Conran, J. G. and Li, Hsi-Wen} } @article {20320, title = {Origins and evolution of cinnamon and camphor: A phylogenetic and historical biogeographical analysis of the Cinnamomum group (Lauraceae)}, journal = {Molecular Phylogenetics and Evolution}, volume = {96}, year = {2016}, pages = {33-44}, chapter = {33}, abstract = {

Tropical and subtropical amphi-Pacific disjunction is among the most fascinating distribution patterns, but received little attention. Here we use the fossil-rich Cinnamomum group, a primarily tropical and sub-tropical Asian lineage with some species distributed in Neotropics, Australasia and Africa to shed light upon this disjunction pattern. Phylogenetic and biogeographic analyses were carried out using sequences of three nuclear loci from 94 Cinnamomum group and 13 outgroup samples. Results show that although there are three clades within a monophyletic Cinnamomum group, Cinnamomum and previously recognized subdivisions within this genus were all rejected as natural groups. The Cinnamomum group appears to have originated in the widespread boreotropical paleoflora of Laurasia during the early Eocene (ca. 55 Ma). The formation and breakup of the boreotropics seems to have then played a key role in the formation of intercontinental disjunctions within the Cinnamomum group. The first cooling interval (50\–48 Ma) in the late early Eocene resulted in a floristic discontinuity between Eurasia and North America causing the tropical and subtropical amphi-Pacific disjunction. The second cooling interval in the mid-Eocene (42\–38 Ma) resulted in the fragmentation of the boreotropics within Eurasia, leading to an African\–Asian disjunction. Multiple dispersal events from North into South America occurred from the early Eocene to late Miocene and a single migration event from Asia into Australia appears to have occurred in the early Miocene.

}, keywords = {Amphi-Pacific disjunction, Biogeography, Boreotropical paleoflora, Cinnamomum group, Lauraceae, molecular phylogeny}, doi = {http://dx.doi.org/10.1016/j.ympev.2015.12.007}, author = {Huang, Jian-Feng and Li, Lang and van der Werff, Henk and Li, Hsi-Wen and Rohwer, Jens G. and Crayn, Darren M. and Meng, Hong-Hu and van der Merwe, Marlien and Conran, J. G. and Li, Jie} }