López-Alvarado, Javier (2012) CentaureaL. section Phrygia Pers.: phylogeny and biogeography. Doctoral Thesis.
Molecular systematics, along with other biosystematic approaches, is an essential tool when trying to decipher the natural relationships among taxa, and in complex groups, such as Centaurea L., this approach seems useful, if not necessary. Centaurea is one of the largest genera of the Compositae and its taxonomic treatment has always been complicated. In particular, the sectional delineation of sections Jacea (Mill.) DC. and Phrygia Pers. (=Lepteranthus nom. inval.) has been controversial for long time. The present review tries to elucidate nomenclature and systematics of sect. Phrygia. Furthermore, taxonomy of morphologically related Iberian species belonging to sect. Phrygia has historically presented many problems. In order to clarify it, an integrative study with morphological and molecular data was used. Moreover, a genetic study of two closely related narrow endemic species was conducted to decipher the evolutionary processes occurring in sect. Phrygia at low scale and to propose the most appropriate conservation strategies. Finally, the study of Centaurea sect. Phrygia has led to the discovery of a new species which was unnoticed in the herbaria for years, Centaurea tripontina López-Alvarado, L. Sáez, Filigheddu, Guardiola and Susanna.
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