Research Paper

A new Begonia species from Arunachal Pradesh, and some notes on Begonia scintillans

Dipankar Borah, Momang Taram, Eric Wahlsteen

Published on: 07 October 2021

Page: 450 - 454

DOI: 10.6165/tai.2021.66.450


A new species, Begonia pasighatensis D.Borah, Taram & Wahlsteen (Begoniaceae) is described and illustrated. It is easily distinguished from all other species in the section Platycentrum by its swollen, spherical ovary with two wings reduced to ridges and a long, pointing upper wing. The new species belongs to Begonia section Platycentrum and is distributed in southern Arunachal Pradesh in East India. We also report a finding of the rare species Begonia scintillans in the Namdapha National Park. This species is similar to B. thomsonii but differs in number of styles and color of the indumentum. Both species are illustrated by photographs and a distribution map is provided.

Keyword: Begonia pasighatensis, Begonia thomsonii, Diploclinium, Platycentrum, new species, rediscovery, taxonomy

Literature Cited

Borah, D., M. Taram and E. Wahlsteen. 2021a. Begonia dicressine (Begoniaceae): a new record for India. Nat. Conserv. Res. 6(4).

Borah, D., M. Taram, and E. Wahlsteen. 2021b. Begonia limprichtii Irmsch. (Begoniaceae), a new record for India. Biodiversity 61:29–33.

Camfield, R. and M. Hughes. 2018. A revision and one new species of Begonia L. (Begoniaceae, Cucurbitales) in Northeast India. Eur. J. Taxon. 396: 1–116.
DOI: 10.5852/ejt.2018.396View Article Google Scholar

Clarke, C.B. 1879. Begoniaceae. In: Hooker JD (ed) Flora of British India vol 2. London, pp 636–656.

Dunn, S.T. 1920. Decades Kewensis: Plantarum Novarum in Herbario Horti Regii Conservatarum. Decas XCVI. Bull. Misc. Inform. Kew. 1920: 108–111.
DOI: 10.2307/4120224View Article Google Scholar

Gu, C., C. Peng and N. Turland. 2007. Begoniaceae. In: Wu Z, Raven P (eds) Flora of China. pp 153–207.

Hughes, M., P.W. Moonlight, A. Jara and M. Pullan. 2015. Begonia Resource Centre. Accessed 25 Oct 2019 Prepared by the Standards and Petitions Subcommittee

Krishna, N., A. K. Pradeep, A. Amrutha, & T. Jayakrishnan. 2021. A new species and a new record of Begonia (sect. Platycentrum, Begoniaceae) from northeastern India. Phytotaxa 482(3): 261–267.
DOI: 10.11646/phytotaxa.482.3.4View Article Google Scholar

Moonlight, P.W., W. H. Ardi, L.A. Padilla, K.F. Chung, D. Fuller, D. Giramansyah, R. Hollands, A. Jara-Mu?oz, R. Kiew, W.-C. Leong, Y. Liu, A. Mahardika, L.D.K. Marasinghe, 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: 10.12705/672.3.S1View Article Google Scholar

Roy, P.S., and P.K. Joshi. 2002. Forest cover and assessment in North East India - issues and policies: 26–34. Indian Institute of Remote Sensing (NRSA), Dehradun.

Taram, M., D. Borah, N. Krishna, A.K. Pradeep, A. Amrutha and M. Hughes. 2020. Begonia oyuniae (Begonia sect. Monophyllon, Begoniaceae), a remarkable new species from Northeast India. Gard. Bull. Singapore 72(1): 109–115.
DOI: 10.26492/gbs72(1).2020-10View Article Google Scholar

Taram, M., D. Borah, and M. Hughes. 2021. Begonia kekarmonyingensis (Begoniaceae), a new species from Arunachal Pradesh, Northeast India. Phytotaxa 494(3): 268–272.
DOI: 10.11646/phytotaxa.494.3.2View Article Google Scholar

Wahlsteen, E. 2018. Begonia mariachristinae (Begoniaceae), a new species from northern Myanmar. Edinb. J. Bot. 75(2): 161–166.
DOI: 10.1017/S0960428618000021View Article Google Scholar

Wahlsteen, E. 2019. A new species of Begonia L. (Begoniaceae) and some notes on Begonia difformis from Kachin, northern Myanmar. Phytotaxa 420(3): 241–248.
DOI: 10.11646/phytotaxa.420.3.4View Article Google Scholar

Wahlsteen, E. 2021. Synonymization of Begonia putaoensis (Begoniaceae) with Begonia dicressine. Phytotaxa 480(1): 91–93.
DOI: 10.11646/phytotaxa.480.1.9View Article Google Scholar