@article {Edwards:2008p1097,
	title = {Using patterns of genetic structure based on microsatellite loci to test hypotheses of current hybridization, ancient hybridization and incomplete lineage sorting in Conradina (Lamiaceae)},
	journal = {Molecular ecology},
	volume = {17},
	number = {23},
	year = {2008},
	month = {Jan},
	pages = {5157{\textendash}5174},
	abstract = {Hybridization and/or incomplete sorting of ancestral polymorphism are commonly implicated to explain discordant phylogenetic analyses of closely related species complexes. One genus in which these phenomena have been suggested to have played major roles based on phylogenetic data is Conradina, a genus of mints (Lamiaceae) endemic to the southeastern USA containing several endangered species. The goals of this study were to use microsatellite data to better understand patterns of genetic structure in Conradina, to test hypotheses of recent or ancient hybridization and incomplete lineage sorting, and to clarify species boundaries. Individuals from 55 populations representing all Conradina species were genotyped using 10 microsatellite loci. Analyses of the patterns of genetic structure in Conradina revealed a clear differentiation of populations following recognized species boundaries, indicating that species have diverged from one another genetically and interspecific hybridization has not occurred recently. Neither ancient hybridization nor incomplete lineage sorting is supported as the sole cause of species nonmonophyly, suggesting that both may have contributed to patterns found in phylogenetic trees; however, analyses of other types of data may be more appropriate to distinguish between these two hypotheses. Because all described species appear to be valid entities, the current listing status of most endangered species of Conradina is appropriate; however, populations of Conradina canescens are genetically differentiated into three groups, each of which may merit species status, and several recently discovered populations of Conradina in Dunn{\textquoteright}s Creek State Park in Florida are highly differentiated genetically and also appear to represent a new species.},
	keywords = {Conradina, Consequences, Conservation, Differentiation, Hybridization, Incomplete Lineage Sorting, Inference, Lamiaceae, Microsatellite, Null Alleles, Phylogeny, Population-Structure, Scrub Mints Lamiaceae, Species Boundaries},
	doi = {10.1111/j.1365-294X.2008.03985.x},
	url = {http://www3.interscience.wiley.com/journal/121529596/abstract},
	author = {C. E Edwards and D. E Soltis and P. S Soltis}
}
@article {Braeuchler:2010p2765,
	title = {Molecular phylogeny of Menthinae (Lamiaceae, Nepetoideae, Mentheae) - Taxonomy, biogeography and conflicts},
	journal = {Molecular Phylogenetics and Evolution},
	volume = {55},
	number = {2},
	year = {2010},
	month = {Jan},
	pages = {501{\textendash}523},
	abstract = {Although the subfamily Nepetoideae (Lamiaceae) is considered to be monophyletic, relationships between tribes, subtribes and genera within the subfamily are poorly understood as complex and possibly homoplasious morphological characters make taxa difficult to delimit. DNA sequence data from three regions (chloroplast: trnK intron; trnL-F; nuclear: ITS) in total including 278 accessions, representing 38 out of 40 genera of subtribe Menthinae and 11 outgroup genera, were used to reconstruct the evolutionary history, test previous hypotheses of classification, explain biogeographic patterns and elucidate character evolution. Using maximum parsimony (MP) and Bayesian analysis phylogenetic reconstructions based on nuclear and chloroplast sequence data were incongruent, consequently the data were analyzed separately.Both nuclear and chloroplast datasets provide strong support for three major lineages: the "Satureja", "Micromeria" and "Clinopodium" group. The first contains members of Satureja and Gontscharovia. In the second lineage Micromeria s.str. and Origanum were resolved as monophyletic, Pentapleura and Zataria indicated as sister groups. Thymbra includes two species of Satureja turning the latter genus polyphyletic. Thymus is revealed as paraphyletic with respect to Argantoniella and Saccocalyx in both and Origanum in the plastid dataset only. In the third lineage, the Clinopodium-group, branching pattern is highly incongruent among datasets and possibly influenced by recent and ancient hybridization, chloroplast capture and incomplete lineage sorting. However, identical terminal groups are inferred in both analyses. A Madagascan lineage of "Micromeria", sister to the recently described South African Killickia, is suggested to represent a new genus. The Himalayan Clinopodium nepalense group and the tropical African C. abyssinicum alliance are monophyletic but indicated in different positions. Both groups appear in the ITS phylogeny in a clade with Cyclotrichium and Mentha, relationships not suggested previously. The enigmatic Micromeria cymuligera is close to Mentha and possibly is a representative of this genus. Species of Acinos, now regarded as part of Clinopodium, are mixed up with species of Ziziphora, questioning either the inclusion of Acinos in Clinopodium or generic distinctness of Ziziphora. All data sets suggest a monophyly of the New World taxa and argue for long distance dispersal from the Old World, rather than a vicariance explanation. Bystropogon marks the split up between the two lineages. Inclusion of 22 genera intermixed with Clinopodium spp. in the New World clade provides evidence that the current circumscription of the genus is highly unnatural. Low sequence divergence resulting in low phylogenetic resolution especially at the base of the clade indicate a rapid radiation accompanied by considerable ecological diversification and speciation. (C) 2010 Elsevier Inc. All rights reserved.},
	keywords = {Chloroplast Dna, Generic delimitations, Genus Bystropogon Lamiaceae, Island Colonization, Lamiaceae, Menthinae, Micromeria Lamiaceae, Minthostachys Labiatae, Molecular phylogeny, North-America, Nuclear Ribosomal Dna, Parsimony Analysis, Salvia Lamiaceae, Satureja, Scrub Mints Lamiaceae},
	doi = {10.1016/j.ympev.2010.01.016},
	url = {http://www.sciencedirect.com/science?_ob=ArticleURL\&_udi=B6WNH-4YC2XFX-1\&_user=2139813\&_coverDate=05\%252F31\%252F2010\&_rdoc=1\&_fmt=high\&_orig=gateway\&_origin=gateway\&_sort=d\&_docanchor=\&view=c\&_acct=C000054276\&_version=1\&_urlVersion=0\&_userid=2139813\&md5=d},
	author = {Christian Braeuchler and Harald Meimberg and Guenther Heubl}
}
