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Phylogeny of Globba section Nudae and taxonomic revision of the new Globba subsection Pelecantherae

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Abstract

A molecular systematic study of Globba section Nudae (Zingiberaceae) using ITS and matK sequences identifies three major clades, Globba subsection Nudae, G. subsection Mediocalcaratae and a new subsection, Globba subsection Pelecantherae, which is described here. The two species belonging in this subsection, Globba pelecanthera and Globba securifer, which are both new, are described. Rectangular anther appendages are reported in Globba for the first time. Evidence of hybridisation is given. The morphological characters of the flowers, which are likely to be important in pollination, are discussed.

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Acknowledgements

This work was carried out as part of the first author’s PhD thesis at Chulalongkorn University. We are grateful to the staff of the Office of the Forest Herbarium (BKF), Department of National Parks, Wildlife and Plant Conservation for permission to collect in national parks and for accompanying us in the field, and to Dr Oudomphone Insisiengmay (The Cabinet of Lao Academy of Science and Technology (CAST), Ministry of Education and Sport, Lao PDR) and Mrs Peou Youleang (RUPP) for the same cooperation in Lao PDR and Cambodia.

Funding

This work is supported financially by the 100th Anniversary Chulalongkorn University Fund for Doctoral Scholarship and the 90th Anniversary Chulalongkorn Fund (Ratchadaphiseksomphot Endowment Fund). The Royal Botanic Garden Edinburgh (RBGE) is supported by the Scottish Government’s Rural and Environmental Science and Analytical Services Division. Computational resources were supplied by the project "e-Infrastruktura CZ" (e-INFRA LM2018140) provided within the programme Projects of Large Research, Development and Innovations Infrastructures. Field work in Cambodia and Laos was supported financially by The Sud Expert Plantes Developpement Durable programme (SEP2D), project AAP3-96 and Institut de Systématique Évolution Biodiversité (ISYEB), Muséum national d’histoire naturelle, Paris, France.

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Contributions

SS collected the data and carried out the morphological analysis. MN and SS wrote the manuscript. TF and SS carried out analysis of molecular data and wrote relevant parts of the text. JD supervised the PhD thesis of SS.

Corresponding author

Correspondence to Jessada Denduangboripant.

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The authors declare that they have no conflict of interest.

Availability of data and material (data transparency)

All sequence data are available in GenBank, morphological data are given in Table 2.

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Handling editor: Livia Wanntorp.

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Sangvirotjanapat, S., Fér, T., Denduangboripant, J. et al. Phylogeny of Globba section Nudae and taxonomic revision of the new Globba subsection Pelecantherae. Plant Syst Evol 308, 5 (2022). https://doi.org/10.1007/s00606-021-01789-6

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  • DOI: https://doi.org/10.1007/s00606-021-01789-6

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