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Molecular phylogeny of the Campanula pyramidalis species complex (Campanulaceae) inferred from chloroplast and nuclear non-coding sequences and its taxonomic implications

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Abstract:

The Campanula pyramidalis complex is a group of closely related taxa with a distribution across the Balkans, from the Gulf of Trieste in the north to the Peloponnese Peninsula in the south, with small disjunct parts of the range in the south Apennines. Although 21 taxa were described within this complex, only three, C. pyramidalis, C. versicolor, and C. secundiflora, have been generally accepted in recent synoptical taxonomic treatments. Our molecular phylogenetic analyses based on sequences of three non-coding chloroplast regions (psbA-trnH, psbZ-trnfM, trnG-trnS) as well as of nuclear ribosomal internal transcribed spacers (nrITS), lend strong support to the recognition of several lineages which only partially correspond to generally accepted taxonomic concepts. Molecular data presented in this study showed that C. pyramidalis is a polyphyletic assemblage that segregates into three distinct lineages, one of which is described here as a new species, C. austroadriatica sp. nov. The lectotype of C. pyramidalis, redefined in a strict sense, is designated. Neither C. versicolor nor C. secundiflora were found to be strictly monophyletic, but their monophyly could not be rejected. Morphological and biogeographical implications are discussed.

Keywords: CAMPANULA; CHLOROPLAST PHYLOGENY; NRITS; PHYLOGEOGRAPHY; TAXONOMY; TYPIFICATION

Document Type: Research Article

DOI: https://doi.org/10.12705/623.1

Affiliations: 1: Botanical Institute and Garden, Faculty of Biology, University of Belgrade, Takovska 43, 11000 Belgrade, Serbia;, Email: dlakusic@bio.bg.ac.rs 2: Department of Botany and Botanical Garden, Division of Biology, Faculty of Science, University of Zagreb, Marulićev trg 9a, 10000 Zagreb, Croatia 3: Andrej Marušič Institute, University of Primorska, Muzejski trg 2, 6000 Koper, Slovenia 4: Department of Agricultural Botany, Faculty of Agriculture, University of Zagreb, Svetošimunska 25, 10000 Zagreb, Croatia 5: Department of Biology, University of Toronto Mississauga, 3359 Mississauga Rd. N., Mississauga, Ontario L5L 1C6, Canada

Publication date: 2013-06-17

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