Research Paper

Taxonomic studies on Begonia (Begoniaceae) in Yunnan I: Two new species from southeastern Yunnan, China

Wen-Guang Wang, Ren-Kun Li, Hou-Cheng Xi, Xing-Da Ma, Jian-Yong Shen

Published on: 09 July 2025

Page: 453 - 458

DOI: 10.6165/tai.2025.70.453

Abstract

The Begonia flora of Yunnan is highly diverse with over 125 taxa currently recognized. From 2019 to the present, the authors have conducted special field surveys and taxonomic studies on Begonia in Yunnan. Begonia bazhaiensis and B. tianbaoensis, two new species from southeast Yunnan, China, are here described. Begonia bazhaiensis belongs to sect. Diploclinium and B. tamdaoensis belongs to sect. Platycantrum. The conservation statuses of the two new species are provisionally assessed as Critically Endangered, respectively, according to Guidelines for Using IUCN Red List Categories and Criteria.

Keyword: Begonia bazhaiensis, Begonia tianbaoensis, Begoniaceae, Diploclinium, limestone flora, new species, Platycentrum

Literature Cited

Bon, T.N., Do, T.T., Le, T.H., Lo, M.D., Zimmer, H., Lin, C.W. 2023 Begonia saxifragoides sp. nov. and two new records of Begonia (Begoniaceae) from northern Vietnam. Phytotaxa 600(1): 16?24.
DOI: 10.11646/phytotaxa.600.1.3View Article Google Scholar

Borah, D., Taram, M., Hughes, M. 2023 Begonia egamii (Begoniaceae), a remarkable new species from Arunachal Pradesh, India. Candollea 78(2):147?151.
DOI: 10.15553/c2023v782a5View Article Google Scholar

Borah, D., Taram, M., Das, N., Hughes, M. 2024a Begonia bijantiae, a new species of Begonia from Arunachal Pradesh, northeast India and notes on Begonia ovatifolia. Nord. J. Bot. 2024(12): e04493.
DOI: 10.1111/njb.04493View Article Google Scholar

Borah, D., Taram, M., Tasser, M., Hughes, M. 2024b A new species Begonia ziroensis and a new record of Begonia siamensis from Arunachal Pradesh, Northeast India. New Zeal. J. Bot. 63(1): 1–8.

Cai, L., He, D.M., Huang, T.W., Dao, Z.L., Wang, W.G. 2022 Begonia erythrofolia, a new species of Begoniaceae from southeastern Yunnan, China. Taiwania 67(1): 110?114.
DOI: 10.6165/tai.2022.67.110View Article Google Scholar

Chen, W.H., Huang, S.H., Aung, A., Yuan, H.K., Shui, Y.M. 2019. Species diversity and spatial distribution of Begonia L. (Begoniaceae) in the Daweishan Range, Yunnan Province, China. Phytotaxa 415(1): 1–31.
DOI: 10.11646/phytotaxa.415.1.1View Article Google Scholar

Chen, W.H., Radbouchoom, S., Nguyen, H.Q., Phutthai, T., Averyanov, L.V., Shui, Y.M. 2020 Reassessment of Begonia arboreta and B. sonlaensis (Begoniaceae) based on field observation and type examination. Phytotaxa 381(1): 132–140.
DOI: 10.11646/phytotaxa.381.1.17View Article Google Scholar

Chen, W.H., Wu, J.Y., Radbouchoom, S., Shui, Y.M. 2021. Validation and morphology of Begonia fagopyrofolia in B. sect. Stolonifera (Begoniaceae) in China. Phytotaxa 479(1): 105–113.
DOI: 10.11646/phytotaxa.479.1.8View Article Google Scholar

Das, B., Saikia, J., Konwar, P., Siga, A., Banik, D. 2024 A new berry-fruited Begonia (Begoniaceae) from Arunachal Pradesh, India. Phytotaxa 665(1): 45?54.
DOI: 10.11646/phytotaxa.665.1.5View Article Google Scholar

Ding, H.B., Gong, Y.X., Pan, R., Lu, X.Q., Tan, Y.H. 2020 A new tuberous species of Begonia L. (Begoniaceae) from southern Yunnan, China. Phytotaxa 474(1): 81–86.
DOI: 10.11646/phytotaxa.474.1.8View Article Google Scholar

Ding, H.B., Quan, D.L., Zeng, X.D., Zhao, J.C., Tan, Y.H. 2023 A new stoloniferous species of Begonia Begoniaceae from Yunnan, China. Nord. J. Bot. 2023(6): e03890.
DOI: 10.1111/njb.03890View Article Google Scholar

Ding, H.B., Hu, X.R., Gong, Y.X., Li, Y.K., Liu, H.Z., Luo, G.Q., Tan, Y.H. 2022 Begonia longlingensis, a new species of Begonia (Begoniaceae) from Yunnan, China. Taiwania 67(3): 377?379.
DOI: 10.6165/tai.2022.67.377View Article Google Scholar

Dong, W.K., Li, J.X., Chen, W.H., Xiao, B., Shui, Y.M. 2021 Begonia caryotarum (Begonia sect. Platycentrum), a new species from southeast Yunnan, China. Phytotaxa 529 (1): 113?118.
DOI: 10.11646/phytotaxa.529.1.9View Article Google Scholar

Feng, X.X., Liu, Z.X., Wei, D., Li, R.K., Huang, Y.N., Guo, L.D., Guo, W., Chen, S.F. 2021 Begonia fenshuilingensis, a new species in Begonia sect. Platycentrum (Begoniaceae) from southeastern Yunnan, China. Phytotaxa 527(4): 266–274.
DOI: 10.11646/phytotaxa.527.4.4View Article Google Scholar

Gu, C.Z., Peng, C.-I., Turland, N. 2007 Begoniaceae. – In: Wu, Z.Y., Raven, P. (eds), Flora of China. Science Press Miss. Bot. Gard. Press, pp. 153–207.
DOI: 10.1111/j.1756-1051.1998.tb01541.xView Article Google Scholar

Hughes, M., Moonlight, P., Jara, A., Tebbitt, M., Wilson, H., Pullan, M. 2015– Begonia Resource Centre. Available from: http://padme.rbge.org.uk/begonia/ (accessed 22 June 2025)
DOI: 10.5852/ejt.2017.281View Article Google Scholar

Huang, S.H., Shui, Y.M. 2006 Begoniaceae. In: Wu, C.Y. (Ed.) Flora Yunnanica, 12. Science Press, Beijing, pp. 18–227.

IUCN Standards and Petitions Committee 2025 Guidelines for Using The IUCN Red List Categories and Criteria. ver. 16. Prepared by the Standards and Petitions Committee. (accessed 5 February 2025).

Leong, W.C., Deng, T., Sun H., Peng, C-I., Chung, K.F. 2015 Begonia difformis comb. & stat. nov. (Sect. Platycentrum, Begoniaceae), a new species segregated from B. palmata D. Don. Phytotaxa 227(1): 83–91.
DOI: 10.11646/phytotaxa.227.1.9View Article Google Scholar

Ma, H., Li, H.Z. 2006 Begonia guaniana (Begoniaceae), a new species from China. Ann. Bot. Fenni. 43(6): 466–470.

Peng, C-I., Leong, W.C., Shui, Y.M. 2006 Novelties in Begonia sect. Platycentrum for China: B. crocea, sp. nov. and B. xanthina Hook., a new distributional record. Bot. Stud. 47: 89–96.

Peng, C-I., Yang, H.A., Kono, Y., Jung, M.J., Nguyen, T.H. 2015 Four new species of Begonia (Begoniaceae) from Vietnam: B. abbreviata, B. calciphila, B. sphenantheroides and B. tamdaoensis. Phytotaxa 222(2): 83–99.
DOI: 10.11646/phytotaxa.222.2.1View Article Google Scholar

Tian, D.K., Wang, W.G., Xiao,Y., Wang, S.W., Zhong, X. 2024a One new species and one new record of Begonia from Xizang of China. Taiwania 69(4): 545?553.
DOI: 10.6165/tai.2024.69.545View Article Google Scholar

Tian, D.K., Wei, H.J., Huang, C.Z., Wu, L., Chen, Z.L., Guo, Z.Y., Sun, X.J., Wang, S.W., Gao, Q.M., Li, X. 2024b Two new species of Begoniaceae from China mainland. Taiwania 69(1): 89?98.
DOI: 10.6165/tai.2024.69.89View Article Google Scholar

Tian, D.K., Xiao, Y., Li, Y.C., Yan, K.J. 2020 Several new records, synonyms, and hybrid-origin of Chinese begonias. PhytoKeys 153: 13?35.
DOI: 10.3897/phytokeys.153.50805View Article Google Scholar

Tian, D.K., Zhou, J.Y., Xiao, Y., Wu, Y.N., Hu, R.C., Dong, X., Guan, S.K. 2024c. Three new species of Begonia (sect. Platycentrum) from South China. Phytotaxa 675(2): 147?157.
DOI: 10.11646/phytotaxa.675.2.5View Article Google Scholar

Tian, J., Wang, Y., Ren, J., Peng, S., Wang, J.J., Zhang, C.F., Hu, G.W. 2021 Rediscovery and supplemental description of Begonia hymenophylloides (Begoniaceae) as new record in China. Phytotaxa 528(2): 139–143.
DOI: 10.11646/phytotaxa.528.2.7View Article Google Scholar

Wang, S.W., Qin, J.Q., Li R.K., Peng, Q.Z., Tian, D.K. 2024 Begonia ornithopedata (sect. Coelocentrum), a new species with the bird foot shaped leaves from Guangxi of China. Taiwania 69(2): 129?132.
DOI: 10.6165/tai.2024.69.129View Article Google Scholar

Wang, W.G., He, X.S., Ma, X.D., Lin, Y.L., Shi, J.P., Gong, Q.B., Shen, J.Y. 2019 Pycnarrhena pleniflora and Begonia gemmipara, two newly recorded species from China. Acta Botanica Boreali-Occidentalia Sinica 39(3): 0563–0567.

Wang, W.G., Jiang, L.J., He, K.H., Shi, J.P., Shen, J.Y. 2020 Begonia xishuangbannaensis (Begoniaceae), a new tuberous species from Yunnan, China. Ann. Bot. Fenni. 57(4-6): 249–253.
DOI: 10.5735/085.057.0409View Article Google Scholar

Wang, W.G., Ma, X.D., Li, R.K., Shi, J.P., Zhang, S.Z., Shen, J.Y. 2020. Begonia puerensis sp. nov. (Begoniaceae), a new tuberous species from Yunnan, China. Nord. J. Bot. 38(1): e02618.
DOI: 10.1111/njb.02618View Article Google Scholar

Wang, W.G., Shen, J.Y., Li, Z.H., Ma, X.D., Shi, J.P., Pan,Y.Y., Shui, Y.M. 2022 Begonia parvuliflora A.DC., a new record of Begoniaceae from China. Plant Sci. J. 40(5): 593–597.

Wang, J., Chen, W.H., Hughes,M. Yang, Z.Z., Shui,Y.M. 2015. Additional notes on the Begonia Sect. Petermannia (Begoniaceae) from China. Plant Divers. 37(5): 563–568.

Wei, Z.D., Shui, Y.M., Zhang, R.M. 2007 Begonia coelocentroides Y.M .Shui & Z.D.Wei,a new species of Begoniaceae from Yunnan, China. Acta Phytotaxonomica Sinica 45(1): 86–89.

Xi, H.C., Nong, F.Y., Shen, J.Y., Ma, X.D., Jiang, L.J., Wang, W.G. 2025 Begonia pingxiangensis, a new species of Begonia sect. Coelocentrum (Begoniaceae) from Guangxi, China. Taiwania 70(1): 1?3.
DOI: 10.6165/tai.2025.70.1View Article Google Scholar

Xi, H.H., Xiao, S.Y., Wang, Y.Q., Xiao, B., Wang, W.G. 2020 Begonia mengdongensis, a new tuberous species of Begonia (Begoniaceae) from southeastern Yunnan, China. Nord. J. Bot. 38(4): e02645.
DOI: 10.1111/njb.02645View Article Google Scholar

Yang, Z.Z., Chen, W.H., Sheng, J.S., Luo, L., Zhang,R.M., Shui, Y.M. 2015 Notes on the species status of Begonia menglianensis Y.Y.Qian (Begoniaceae). Plant Divers. 37(5): 557–562.

Yang, Z.Z., Zhou, S.S., Li, Z.H., Wang, J., Chen, W.H., Shui, Y.M. 2015. Two new records of Begonia L.(Begoniaceae) from China. Plant Divers. 37(4): 425–427.

Yue, M.M., Li, J.W., Wang, L., Zeng, X.D., Wang, P.Y., Ding, H.B. 2023 Begonia prolifera A. DC., a newly recorded species of Begoniaceae from China. Plant Sci. J. 41(4): 421–424.

Zhou, J.Y., Song, Q., Zhao, F.C., Hoang, T.S., Tao, D.Y., Guan, S.K., Yan, H.X., Tian, D.K. 2024 Begonia floriprolifera, a new species of Begonia(Begoniaceae)from Southwestern Guangxi of China and Northern Vietnam. Taiwania 69(1): 83?88.
DOI: 10.6165/tai.2024.69.83View Article Google Scholar