@article {Trusty:2005p8008,
	title = {Molecular phylogenetics of the Macaronesian-endemic genus Bystropogon (Lamiaceae): palaeo-islands, ecological shifts and interisland colonizations},
	journal = {Molecular ecology},
	volume = {14},
	number = {4},
	year = {2005},
	month = {Apr},
	pages = {1177{\textendash}89},
	abstract = {Abstract A molecular phylogenetic study of Bystropogon L{\textquoteright}Her. (Lamiaceae) is presented. We performed a cladistic analysis of nucleotide sequences of the internal transcribed spacers (ITS), of the nuclear ribosomal DNA, and of the trnL gene and trnL-trnF intergenic spacer of the chloroplast DNA. Bystropogon odoratissimus is the only species endemic to the Canary Islands that occurs in the three palaeo-islands of Tenerife. This species is not part of an early diverging lineage of Bystropogon and we suggest that it has a recent origin. This phylogenetic pattern is followed by most of the species endemic to the palaeo-islands of Tenerife. The two sections currently recognized in Bystropogon form two monophyletic groups. Taxa belonging to the section Bystropogon clade show interisland colonization limited to the Canary Islands with ecological shifts among three ecological zones. Taxa from the section Canariense clade show interisland colonization both within the Canary Islands and between the Canary Islands and Madeira. Speciation events within this clade are mostly limited to the laurel forest. The genus has followed a colonization route from the Canaries towards Madeira. This route has also been followed by at least five other plant genera with species endemic to Macaronesia. Major incongruences were found between the current infrasectional classification and the molecular phylogeny, because the varieties of Bystropogon origanifolius and Bystropogon canariensis do not form two monophyletic groups. The widespread B. origanifolius appears as progenitor of the other species in section Bystropogon with a more restricted distribution.},
	keywords = {DNA: Chloroplast, DNA: Ribosomal, DNA: Ribosomal Spacer, Genetic Variation, Geography, Lamiaceae, Phylogeny, Sequence Analysis: DNA},
	doi = {10.1111/j.1365-294X.2005.02487.x},
	author = {Jennifer L Trusty and Richard G Olmstead and Arnoldo Santos-Guerra and Susana S{\'a}-Fontinha and Javier Francisco-Ortega}
}
@article {Barber:2002p8028,
	title = {Origin of Macaronesian Sideritis L. (Lamioideae: Lamiaceae) inferred from nuclear and chloroplast sequence datasets},
	journal = {Molecular Phylogenetics and Evolution},
	volume = {23},
	number = {3},
	year = {2002},
	month = {Jun},
	pages = {293{\textendash}306},
	abstract = {Sideritis L. (Lamiaceae) comprises approximately 150 species of annuals and perennials distributed chiefly in the Mediterranean region. The majority of the species belong to the continental subgenus Sideritis which is divided into two perennial (Sideritis and Empedoclea) and two annual (Hesiodia and Burgsdorfia) sections. Twenty-three species are woody perennials endemic to the Macaronesian archipelagos of Madeira and the Canary Islands. In an effort to determine the continental origin of the insular group, we constructed independent phylogenies comprising sequence data from both chloroplast and nuclear markers. Sampling included 7 island taxa drawn from the Macaronesian subgenus Marrubiastrum and 25 continental taxa representing all four sections of subgenus Sideritis. Subgenus Marrubiastrum and the two continental perennial sections form well-supported monophyletic groups in both individual and combined analyses. The annual sections are not monophyletic in any analysis; further sampling of annual taxa is needed to resolve these relationships. All analyses identified Sideritis cossoniana, an annual species from Morocco, as the closest continental relative of the Macaronesian group. This contrasts with the hypothesis of earlier workers who suggested that the insular taxa were most closely related to eastern Mediterranean species of the genus. The phylogenies also demonstrate a distinct increase in woodiness among the Macaronesian species relative to their continental congeners, providing further support for the secondary nature of woodiness in island plants.},
	keywords = {Biological Evolution, Cell Nucleus, Chloroplasts, DNA: Intergenic, DNA: Ribosomal, Genetic Variation, Introns, Phylogeny, Portugal, Sideritis, Spain},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S1055-7903(02)00018-0},
	author = {Janet C Barber and Javier Francisco-Ortega and Arnoldo Santos-Guerra and Kathryn G Turner and Robert K Jansen}
}
