Research Paper

Two new species of Begonia L. (Begoniaceae) from central Laos

Keooudone Souvannakhoummane, Soulivanh Lanorsavanh, Vichith Lamxay

Published on: 09 July 2018

Page: 188 - 194

DOI: 10.6165/tai.2018.63.188

Abstract

Two new species of Begonia are described and illustrated from Hin Nam No National Protected Area in the Khammouan Province, Central Laos. Begonia hinnamnoensis Souvann. & Lanors. and Begonia khammouanensis Souvann. & Lamxay, both belonging to Begonia sect. Diploclinium (Lindl.) A. DC. The two new species are endemic to the Khammouan limestone karst. The provisional IUCN status of both new species is here assessed as ‘Vulnerable’.

Keyword: Begonia hinnamnoensis, Begonia khammouanensis, Begoniaceae, Limestone flora, Laos, Taxonomy

Literature Cited

Averyanov, L.V. and H.Q. Nguyen. 2012. Eleven new species of Begonia L. (Begoniaceae) from Laos and Vietnam. Turczaninowai 15(2): 5-32.

Chen, W.-H., S. Radbouchoom, H.Q. Nguyen, H.T. Nguyen, K.S. Nguyen and Y.-M. Shui. 2018. Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. PhytoKeys 94: 65-85.
DOI: 10.3897/phytokeys.94.23248View Article Google Scholar

De Wilde, J.J.F.E., M. Hughes, M. Rodda and D.C. Thomas. 2011. Pliocene intercontinental dispersal from Africa to Southeast Asia highlighted by the new species Begonia afromigrata (Begoniaceae). Taxon 60(6):1685-1692.

Hughes, M. 2008b. Begonia cladotricha (Begoniaceae): A new species from Laos. Edinburgh J. Bot. 64(1): 101-105.
DOI: 10.1017/S0960428607000777View Article Google Scholar

Hughes, M., P. Moonlight, A. Jara & M. Pullan. 2015. Begonia Resource Centre. Online database available from http://elmer.rbge.org.uk/begonia/ (accessed 31 January 2018).

Hughes., M. 2008a. An Annotated Checklist of Southeast Asian Begonia. Edinburgh: Royal Botanic Garden Edinburgh.

L?, N.-S., C.-I. Peng and M. Hughes. 2018. Begonia lecongkietii (sect. Petermannia), A New Species from Mount D?u, South Central Coast Region, Vietnam. Edinburgh J. Bot. 75(2): 167-172.
DOI: 10.1017/S0960428618000033View Article Google Scholar

Moonlight, P.W., W.H. Ardi, L. A. Padilla, K.-F. Chung, D. Fuller, D. Girmansyah, R. Hollands, A. Jara-Mu?oz, R. Kiew, W.-C. Leong, Y. Liu, A. Mahardika, Marasinghe, D.K. Lakmini, M. O'Connor, C.-I Peng, ?.J. P?rez, T. Phutthai, M. Pullan, S. Rajbhandary, C. Reynel, R.R. Rubite, J. Sang, D. Scherberich, Y.-M. Shui, M. C. Tebbitt, D.C. Thomas, H.P. Wilson, N.H. Zaini and M. Hughes. 2018. Dividing and conquering the fastest-growing genus: Towards a natural sectional classification of the mega-diverse genus Begonia (Begoniaceae). TAXON 67(2): 267-323.
DOI: 10.12705/672.3View Article Google Scholar

Newman, M.F., S. Ketphanh, B. Svengsuksa, P. Thomas, K. Sengdala, V. Lamxay and K. Armstrong. 2007. A checklist of the vascular plants of Laos. Royal Botanic Garden Edinburgh, UK, pp. 394.

Peng, C.-I., C.-W. Lin and T. Phutthai. 2017. Begonia fulgurata (sect. Diploclinium, Begoniaceae), a new species from northern Thailand. Blumea 62(3):163-167.
DOI: 10.3767/blumea.2017.62.03.01View Article Google Scholar

Peng, C-I., C-W. Ling, H-A. Yang, Y. Kono and H.Q. Nguyen. 2015b. Six new species of Begonia (Begoniaceae) from limestone areas in northern Vietnam. Bot. Stud. 56(1): 9
DOI: 10.1186/s40529-015-0089-3View Article Google Scholar

Peng, C-I., H-A. Yang, Y. Kono, M-J. Jung and T.H. Nguyen. 2015a. Four new species of Begonia (Begoniaceae) from Vietnam: B. abbreviata, B. calciphila, B. sphenantheroides. Phytotaxa 222(2): 083-099.
DOI: 10.11646/phytotaxa.222.2.1View Article Google Scholar

Phutthai, T. and K. Sridith. 2010. Begonia pteridiformis (Begoniaceae), a new species from Thailand. Thai Forest Bulletin 38: 37-41.

Phutthai, T. and M. Hughes. 2017. Four new species of Begonia (Begoniaceae) from Thailand. Edinburgh J. Bot. 74(2): 149 - 161.
DOI: 10.1017/S0960428617000051View Article Google Scholar

Phutthai, T., M. Hughes and K. Sridith. 2012. A new species of Begonia (Begoniaceae) from peninsular Thailand. Edinburgh J. Bot. 69(2): 287-292.
DOI: 10.1017/S0960428612000078View Article Google Scholar

Souvannakhoummane, K., M. Hughes and S. Lanorsavah. 2016. Begonia lamxayiana Souvann. (Begoniaceae): a new species from Laos. Thai J. Bot. 8(1): 1-5.

Yang, C.-J., S. Tagane, S. Souladeth, N. Okabe, J.-M. Hu and T. Yahara. 2018. Flora of Nam Kading National Protected Area III: Begonia namkadingensis (Begoniaceae), a new species in limestone area. Phytotaxa 334(2): 195-199.
DOI: 10.11646/phytotaxa.334.2.8View Article Google Scholar