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Open Access On the taxonomic status and the phylogenetic relationships of some unispecific Mediterranean genera of Compositae-Anthemideae II. Daveaua, Leucocyclus and Nananthea

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Sequences of the nrDNA internal transcribed spacer (ITS) region were analysed for 113 representative species of 59 genera of Compositae-Anthemideae to ascertain the systematic position of the three unispecific Mediterranean genera Daveaua, Leucocyclus and Nananthea. Daveaua anthemoides is found to be a member of a well supported clade of genera around the closely-knit Leucanthemum group, being a candidate (together with Heteromera and Otospermum) for a sister-group of this assemblage. For Leucocyclus formosus, which was considered to be closely related to Anacyclus due to its dorsiventrally flattened achenes, a position close to or even among representatives of Achillea is demonstrated, corroborating alleged relationships suggested by the flavonoid complements of these genera. Nananthea perpusilla, hitherto considered to be close to Anthemis due to its tetrasporic embryo sac development, is found to be more closely related to Tripleurospermum, which also shares the tetrasporic embryo sac and the indumentum of basifixed hairs.

Document Type: Research Article

DOI: http://dx.doi.org/10.3372/wi.34.34201

Publication date: December 1, 2004

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  • Willdenowia is an international peer-reviewed journal publishing original research papers in English from the entire fields of plant, algal and fungal systematics, covering the evolution, taxonomy and nomenclature of these organisms as well as related fields such as floristics and plant geography. Three issues appear each year (in April, August and December) in an open-access online edition and a print edition. Individual papers may be published in the online edition as fast-track articles ahead of inclusion in these issues.

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