- 期刊
Begonia tui, a new species of Begonia sect. Coelocentrum from Quang Binh Province, Central Vietnam
摘要
Begonia tui, a new species of sect. Coelocentrum, is described and illustrated here. It was collected during expeditions carried out on a limestone hill in Quang Binh Province, Central Vietnam. The new species is morphologically similar to B. mollissima in its rugose, widely ovate lamina. However, the new species can be distinguished by the margin of the stipule which is entire (vs. ciliate), androecium is zygomorphic (vs. actinomorphic), the pistillate flowers with 3 tepals (vs. 2), and the ovary's abaxial wing is triangular (vs. lunate). The conservation status of B. tui is assessed as Endangered, according to the IUCN Red List Categories and Criteria.
關鍵字
Begonia mollissima ； Begonia datii ； biodiversity ； endemism ； Indochina ； limestone ； taxonomy ； plant conservation參考文獻
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.
Chung, K.F., Leong, W.C., Rubite, R.R., Repin, R., Kiew, R., Liu, Y., Peng, C.-I 2014 Phylogenetic analyses of Begonia sect. Coelocentrum and allied limestone species of China shed light on the evolution of Sino-Vietnamese karst flora. Bot. Stud. 55:e1.
Feng, X.-X., Chen, Y.-M., Liu, J.-X., Huang, Y.-N., Liu, Z.-X., Li, R.-K., ,Zhao, T., Guo, W. 2023 Begonia barosma, a new species in Begonia sect. Coelocentrum (Begoniaceae) from limestone karsts across Sino-Vietnamese Border. Taiwania 68(3): 349–354.
Hoang, T.S., Lin, C.W. 2023a Begonia wiformis, a new species, and a new record of B. sect. Coelocentrum (Begoniaceae) from North Vietnam. Phytotaxa 591(4): 292–300.
Hoang, T.S., Lin, C.W. 2023b Begonia datii (sect. Coelocentrum Begoniaceae), a new species from Quang Binh Province, Central Vietnam. Phytotaxa 609(4): 282–288.
延伸閱讀
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