@article {8,
	title = {Evidence for nonallopatric speciation among closely related sympatric Heliotropium species in the Atacama Desert},
	journal = {Ecology and Evolution},
	volume = {4},
	year = {2014},
	month = {2014///},
	pages = {266 - 275},
	abstract = {The genetic structure of populations of closely related, sympatric species may hold the signature of the geographical mode of the speciation process. In fully allopatric speciation, it is expected that genetic differentiation between species is homogeneously distributed across the genome. In nonallopatric speciation, the genomes may remain undifferentiated to a large extent. In this article, we analyzed the genetic structure of five sympatric species from the plant genus Heliotropium in the Atacama Desert. We used amplified fragment length polymorphisms (AFLPs) to characterize the genetic structure of these species and evaluate their genetic differentiation as well as the number of loci subject to positive selection using divergence outlier analysis (DOA). The five species form distinguishable groups in the genetic space, with zones of overlap, indicating that they are possibly not completely isolated. Among-species differentiation accounts for 35\% of the total genetic differentiation (FST = 0.35), and FST between species pairs is positively correlated with phylogenetic distance. DOA suggests that few loci are subject to positive selection, which is in line with a scenario of nonallopatric speciation. These results support the idea that sympatric species of Heliotropium sect. Cochranea are under an ongoing speciation process, characterized by a fluctuation of population ranges in response to pulses of arid and humid periods during Quaternary times.},
	isbn = {2045-7758},
	url = {http://onlinelibrary.wiley.com/doi/10.1002/ece3.929/abstract},
	author = {Federico Luebert and Jacobs, Pit and HH Hilger and Muller, Ludo A. H.}
}
@article {1,
	title = {Molecular delimitations in the Ehretiaceae (Boraginales)},
	journal = {Molecular Phylogenetics and Evolution},
	volume = {72},
	year = {2014},
	month = {2014/03//},
	pages = {1 - 6},
	abstract = {Major taxa of Ehretiaceae (including parasitic Lennoaceae) have not all been included in previous molecular phylogenetic analyses. As a result, the generic limits and their circumscriptions have not been satisfactorily resolved, despite its importance for floristic studies. To clarify which monophyletic groups can be recognized within the Ehretiaceae, sequences from one nuclear (ITS) and three plastid loci (rps16, trnL{\textendash}trnF, trnS{\textendash}trnG) were obtained from 67 accessions tentatively assigned to the Ehretiaceae (including 91 new GenBank entries) and covering the known diversity of the group. In phylogenetic analyses, Ehretiaceae were monophyletic when Lennoaceae were included and segregated into nine monophyletic lineages that correspond to accepted, morphologically distinct taxonomic units, namely Bourreria (s.l., paraphyletic in its current circumscription if not including Hilsenbergia), monotypic Cortesia, Ehretia (s.l., paraphyletic in its current circumscription if not including Carmona and Rotula), Halgania, monotypic Lennoa, Lepidocordia, Pholisma, Rochefortia, and Tiquilia. Bourreria and Ehretia have representatives in both the Old World and the New World, but all other taxa are restricted to the tropical and subtropical Americas (Cortesia, Lennoa, Lepidocordia, Pholisma, Rochefortia, Tiquilia) or Australia (Halgania). The historical biogeography of Ehretiaceae can be explained by few colonization events. The molecular trees are also discussed with respect to fruit evolution, where the fusion of endocarp parts may have taken place several times independently.},
	isbn = {1055-7903},
	url = {http://www.sciencedirect.com/science/article/pii/S1055790313004405},
	author = {Marc Gottschling and Federico Luebert and HH Hilger and James S. Miller}
}
@article {2,
	title = {From capsules to nutlets {\textendash} Phylogenetic relationships in the Boraginales},
	journal = {Cladistics},
	volume = {30},
	year = {2014},
	month = {2014},
	pages = {508-518},
	doi = {10.1111/cla.12061},
	url = {http://onlinelibrary.wiley.com/doi/10.1111/cla.12061/abstract},
	author = {M. Weigend and Federico Luebert and Marc Gottschling and Couvreur, T. L. P. and HH Hilger and James S. Miller}
}
