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The identity and geographical distribution of Jacobaea vulgaris subsp. gotlandica, supposedly endemic to Gotland and Öland (Sweden)—the importance of multiple intraspecific samples

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Abstract:

The identity of Jacobaea vulgaris Gaertn. subsp. gotlandica (Neum.) B. Nord., hitherto considered an endemic to the Swedish islands Öland and Gotland, was investigated using nrITS and trnT-trnL intergenic spacer sequences and a broad sample of species and accessions particularly of J. vulgaris. We found that J. vulgaris subsp. gotlandica is a distinct evolutionary lineage more widespread in Europe than previously thought and may be a southeastern European steppe floristic element with outliers on the large Baltic islands. Our entirely unexpected findings underline the need of multiple intraspecific sampling in species-level phylogenetic studies.

Keywords: INTRASPECIFIC VARIATION; JACOBAEA; MOLECULAR PHYLOGENY; TAXONOMY

Document Type: Research Article

Affiliations: 1: Institut für spezielle Botanik und Botanischer Garten, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany 2: Department of Phanerogamic Botany, Swedish Museum of Natural History, 104 05 Stockholm, Sweden

Publication date: 2009-11-01

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