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Issue: Vol. 674 No. 3: 28 Nov. 2024
Type: Article
Published: 2024-11-28
DOI: 10.11646/phytotaxa.674.3.5
Page range: 281-287
Abstract views: 213
PDF downloaded: 12

Begonia triquetra (sect. Platycentrum, Begoniaceae), a new subpeltate-leaved species from limestone hills in Son La province, Northwestern Vietnam

Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi-10072, Vietnam
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi-10072, Vietnam. Institute of Regional Research and Development, Ministry of Science and Technology, No. 70, Tran Hung Dao, Hoan Kiem District, Hanoi, Vietnam.
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi-10072, Vietnam. Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi-10072, Vietnam.
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi-10072, Vietnam. Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi-10072, Vietnam.
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi-10072, Vietnam
Mien Trung Institute for Scientific Research, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 321 Huynh Thuc Khang street, Thua Thien Hue, Vietnam
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi-10072, Vietnam. Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi-10072, Vietnam.
Herbarium of Taiwan Forestry Research Institute, Taiwan Forestry Research Institute, No. 53, Nan-Hai Road, Taipei 100, Taiwan
biodiversity endemism Indochina plant conservation taxonomy Eudicots

Abstract

Begonia triquetra, a new species endemic to the limestone karst regions of Son La province in Northwestern Vietnam, is described and illustrated here. This new species resembles B. xenos in its suberect habit, subpeltate lamina, 4-tepaled staminate flowers, and 2-locular ovary. However, B. triquetra differs significantly from B. xenos in having triangular (vs. terete) cross section of petiole, entire (vs. slightly crenulate) staminate tepals, and zygomorphic (vs. actinomorphic) androecium with 18–24 (vs. 52–85) stamens. Notes on ecology and conservation status are preliminarily provided to the new species.

References

  1. Ai, B., Gao, Y., Zhang, X., Tao, J., Kang, M. & Huang, H. (2015) Comparative transcriptome resources of eleven Primulina species, a group of ‘stone plants’ from a biodiversity hot spot. Molecular Ecology Resources 15: 619–632. https://doi.org/10.1111/1755-0998.12333
  2. Averyanov, L.V., Nguyen, K.S., Maisak, T.V., Nguyen, H.T. & Nguyen, H.Q. (2019) Two new species of Begonia L. (Begoniaceae) from central Laos. Turczaninowia 22 (2): 134–141. https://doi.org/10.14258/turczaninowia.22.2.9
  3. Averyanov, L.V., Nuraliev, M.S., Konstantinov, E.L., Maisak, T.V., Kopylov-Guskov, Y.O., Lyskov, D.F., Quang, B.H., Kuznetsov, A.N., Kuznetsov, S.P., Nguyen, K.S. & Shui, Y.M. (2021) New and noteworthy species of Begonia (Begoniaceae) from Vietnam and Laos. Phytotaxa 522 (2): 75–93. https://doi.org/10.11646/phytotaxa.522.2.1
  4. Bon, T.N., Do, T.T.H., Le, T.H., Lo, M.D., Zimmer, H.D. & Lin, C.W. (2023) Begonia saxifragoides sp. nov. and two new records of Begonia (Begoniaceae) from northern Vietnam. Phytotaxa 600 (1): 16–24. https://doi.org/10.11646/phytotaxa.600.1.3
  5. Chen, W.H., Radbouchoom, S., Nguyen, H.Q., Nguyen, H.T., Nguyen, K.S. & Shui, Y.M. (2018) Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. Phytokeys 94: 65–85. https://doi.org/10.3897/phytokeys.94.23248
  6. Hughes, M., Moonlight, P.W., Jara, A. & Pullan, M. (2015 onwards) Begonia Resource Centre. Available from: http://padme.rbge.org.uk/begonia (accessed 11 Nov. 2024)
  7. IUCN Standards and Petitions Committee (2024) Guidelines for Using the IUCN Red List Categories and Criteria, version 16. Prepared by the Standards and Petitions Committee, 122 pp. Available from: https://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 2 September 2024)
  8. Lanorsavanh, S., Hughes, M., Souvannakhoummane, K. & Lamxay, V. (2020) Begonia phouchomvoyensis (Begoniaceae), a new species from Laos. Taiwania 65 (1): 37–40. https://doi.org/10.6165/tai.2020.65.37
  9. Lanorsavanh, S., Souvannakhoummane, K., Lamxay, V. & Chanthavongsa, K. (2021) Two new species and a new record of Begonia (Begoniaceae) from Vangvieng karst limestone in central Laos. Thai Forest Bulletin (Botany) 49 (2): 191–200. https://doi.org/10.20531/tfb.2021.49.2.06
  10. Lin, C.W., Phan, L.C.S. & Nguyen, N.H. (2021) Begonia rigidifolia ssp. sonhungii (sect. Petermannia, Begoniaceae), a new subspecies from limestone hills in Central Vietnam. Phytotaxa 498 (2): 139–144. https://doi.org/10.11646/phytotaxa.498.2.7
  11. Lin, C.W., Phonepaseuth, P. & Rahm, P. (2022) Begonia xenos—a new species and an updated checklist of Begonia in Laos. Phytotaxa 543 (3): 193–202. https://doi.org/10.11646/phytotaxa.543.3.4
  12. Liu, Y., Tseng, Y.H., Yang, H.A., Hu, A.Q., Xu, W.B., Lin, C.W., Kono, Y., Chang, C.C., Peng, C.I. & Chung, K.F. (2020) Six new species of Begonia from Guangxi, China. Botanical Studies 61: e21. https://doi.org/10.1186/s40529-020-00298-y
  13. Lý, N.S., Peng, C.-I. & Hughes, M. (2018) Begonia lecongkietii (sect. Petermannia), a new species from Mount Dau, South Central Coast Region, Vietnam. Edinburgh Journal of Botany 75 (2): 167–172. https://doi.org/10.1017/S0960428618000033
  14. Maw, M.B., Ding, H.B., Yang, B., Win, P.P. & Tan, Y.H. (2020) Taxonomic studies on Begonia (Begoniaceae) in Myanmar I: three new species and supplementary description of Begonia rheophytica from Northern Myanmar. PhytoKeys 138: 203–217. https://doi.org/10.3897/phytokeys.138.38721
  15. Maw, M.B., Ding, H.B., Yang, B., Win, P.P. & Tan, Y.H. (2021) Taxonomic studies on Begonia (Begoniaceae) in Myanmar II: seven new species from Myanmar. Taiwania 66 (2): 214‒231. https://doi.org/10.6165/tai.2021.66.214
  16. Moonlight, P.W., Ardi, W.H., Padilla, L.A., Chung, K.F., Fuller, D., Girmansyah, D., Hollands, R., Jara-Muñoz, A., Kiew, R., Leong, W.C., Liu, Y., Mahardika, A., Marasinghe, L.D.K., O’Connor, M., Peng, C.I, Pérez, Á.J., Phutthai, T., Pullan, M., Rajbhandary, S., Reynel, C., Rubite, R.R., Julia, S., Scherberich, D., Shui, Y.M., Tebbitt, M.C., Thomas, D.C., Wilson, H.P., Zaini, N.H. & Hughes, M. (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. https://doi.org/10.12705/672.3
  17. Meng, H.H., Zhang, C.Y., Song, Y.G., Yu, X.Q., Cao, G.L., Li, L., Cai, C.N., Xiao, J.H., Zhou, S.S., Tan, Y.H. & Li, J. (2022) Opening a door to the spatiotemporal history of plants from tropical Indochina Peninsula to subtropical China. Molecular Phylogenetics and Evolution 171: 107458. https://doi.org/10.1016/j.ympev.2022.107458
  18. Pham, V.T., Trinh, N.B., Phan, K.L. & Lin, C.W. (2019) Two new species, Begonia dinhdui and B. bacmeensis (Begoniaceae), from Vietnam. Phytotaxa 427 (1): 22–30. https://doi.org/10.11646/phytotaxa.427.1.3
  19. Pham, V.T., Dinh, Q.D., Nguyen, V.C., Trinh, N.B., Nguyen, D.D., Nguyen, T.H. & Lin, C.W. (2021) Begonia of Vietnam: an updated checklist, including a new species and a new record. Phytotaxa 507 (2): 144–154. https://doi.org/10.11646/phytotaxa.507.2.2
  20. Poyarkov, N.A., Nguyen, T.V., Popov, E.S., Geissler, P., Pawangkhanant, P., Neang, T., Suwannapoom, C. & Orlov, N.L. (2021) Recent progress in taxonomic studies, biogeographic analysis, and revised checklist of amphibians of Indochina. Russian Journal of Herpetology 28 (3A): 1–110. https://doi.org/10.30906/1026-2296-2021-28-3A-1-110
  21. Shui, Y.M., Vu, C.T., Le, T.A., Pham, T.T.D., Nguyen, V.D., Duong, T.M.H. & Lei, L.G. (2019) Two new cane-like species of Begonia L. (Begoniaceae) from central Vietnam. Phytotaxa 411 (1): 57–64. https://doi.org/10.11646/phytotaxa.411.1.5
  22. Shui, Y.M., Chen, W.H., Peng, H., Huang, S.H. & Liu, Z.W. (2019) Taxonomy of Begonias. Yunnan Science and Technology Press, Kunming, 468 pp.
  23. Souvannakhoummane, K., Lanorsavanh, S., Averyanov, L.V. & Lamxay, V. (2021) Seven new species and seven new records of Begonia L. (Begoniaceae) in the flora of Laos. Turczaninowia 24 (2): 99–119. https://doi.org/10.14258/turczaninowia.24.2.12
  24. Tordoff, A.W., Bezuijen, M.R., Duckworth, J.W., Fellowes, J.R., Koenig, K., Pollard, E.H.B. & Royo, A.G. (2012) Ecosystem Profile: Indo-Burma Biodiversity Hotspot, 2011 Update. Washington DC, Critical Ecosystem Partnership Fund, 381 pp.