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Molecular and morphological evidence for an intercontinental range of the liverwort Lejeunea pulchriflora (Marchantiophyta: Lejeuneaceae)

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Abstract

Examination of type specimens and additional vouchers has revealed that the African Taxilejeunea pulchriflora and the tropical Asian Lejeunea propagulifera and Lejeunea tamaspocsii show considerable morphological overlap; however, morphological similarity does not necessarily indicate genetic similarity. Thus, sequences of two chloroplast regions (trnL-trnF, rbcL) and the nuclear ribosomal ITS region were generated from accessions of these taxa from Tanzania, Ethiopia, Thailand, Malaysia, and the Fiji Islands and integrated into an existing Lejeunea dataset. Phylogenetic analyses of the three-marker dataset resolved the three taxa in a robust monophyletic lineage and indicated relationships to Neotropical and Holarctic species. Based on the morphological similarities and the low molecular variation of the investigated accessions, we consider the three taxa as conspecific and propose two synonyms and a new combination, Lejeunea pulchriflora. Lejeunea pulchriflora is characterized by its asymmetrical leaf lobes, small, distant underleaves, toothed perianth keels, and autoicy and ranges from tropical Africa to the Pacific region.

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Acknowledgments

We would like to thank the directors and curators of the herbaria EGR, G, GOET, JE, S, and UKMB for the loan of specimens and Andreas Beck (Munich) for the digital map used in Fig. 3. This study was supported by the Alexander von Humboldt Foundation (grant to G.E.Lee) and the German Research Foundation (grant HE 3584 / 6).

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  1. Department of Biology I, Systematic Botany and Mycology, Geobio-Center, University of Munich (LMU), Menzinger St. 67, 80638, Munich, Germany

    Gaik Ee Lee, Julia Bechteler & Jochen Heinrichs

  2. School of Marine and Environmental Sciences, University Malaysia Terengganu, Mengabang Telipot, 21030, Kuala Terengganu, Terengganu, Malaysia

    Gaik Ee Lee

  3. Botany Department, Institute of Biology, Eszterházy College, Pf. 43, Eger, 3301, Hungary

    Tamás Pócs

  4. Mittlere Letten 11, 88634, Herdwangen-Schönach, Germany

    Alfons Schäfer-Verwimp

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  1. Gaik Ee Lee
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Correspondence to Jochen Heinrichs.

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Table S1

Taxa used in the present study. Information about the origin of the studied material, vouchers, as well as GenBank accession numbers is included. New sequences in bold face. (DOC 121 kb)

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Lee, G.E., Bechteler, J., Pócs, T. et al. Molecular and morphological evidence for an intercontinental range of the liverwort Lejeunea pulchriflora (Marchantiophyta: Lejeuneaceae). Org Divers Evol 16, 13–21 (2016). https://doi.org/10.1007/s13127-015-0243-5

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