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Two new species of Begonia (Begoniaceae) from Long Duhung, Berau Regency, East Kalimantan, Borneo Island, Indonesia

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Summary

Two new species of Begonia (Begoniaceae) from the section Petermannia are described from the Berau Regency, East Borneo: B. ltahensis Girm. and B. duhungensis Girm. The habit of B. ltahensis is similar to B. calcarea, currently known only from the Ltah river in lowland mixed Dipterocarp forest in Long Duhung, Kelay District, Berau Regency. Meanwhile, B. duhungensis is similar to B. heliostrophe from Sabah, found near Long Duhung village. A distribution map, images and conservation status are provided for each taxon.

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Acknowledgements

.I am grateful to the Director of Herbarium Bogoriense for making available the specimens studied, Dr Ida Theldea and Sorens Brofeldt who encouraged me to collect Begonia during their 2015 ecological survey and training of locals in specimen collection and identification in Long Duhung, Berau, East Kalimantan; also to Tim Utteridge at the Royal Botanic Garden, Kew for the comments on an earlier version of the manuscript. I would like to thank the Trustees of the Bentham-Moxon Trust for their consideration of the original application and subsequent award which has facilitated this work. I would also like to thank staff at the Kew Herbarium (Tim Utteridge, Rogier de Kok and Marie Briggs) for facilitating my visit to Kew. Additional thanks to all of the Kew Herbarium staff for their hospitality.

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Authors and Affiliations

  1. Herbarium Bogoriense, Research Center for Biology, Indonesian Institute of Sciences, Jl. Raya Jakarta-Bogor Km 46, Cibinong, 16911, Bogor, West Java, Indonesia

    Deden Girmansyah

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  1. Deden Girmansyah
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Correspondence to Deden Girmansyah.

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Girmansyah, D. Two new species of Begonia (Begoniaceae) from Long Duhung, Berau Regency, East Kalimantan, Borneo Island, Indonesia. Kew Bull 72, 3 (2017). https://doi.org/10.1007/s12225-016-9665-2

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