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Carpinus tibetana (Betulaceae), a new species from southeast Tibet, China
Lu, Zhiqiang; Li, Ying; Yang, Xiaoyue; Liu, Jianquan
2018
Source PublicationPHYTOKEYS
ISSN1314-2011
Issue98Pages:1-13
AbstractA new species Carpinus tibetana Z. Qiang Lu & J. Quan Liu from southeast Tibet is described and illustrated. The specimens of this new species were previously identified and placed under C. monbeigiana Hand.-Mazz. or C. mollicoma Hu. However, the specimens from southeast Tibet differ from those of C. monbeigiana from other regions with more lateral veins (19-24 vs 14-18) on each side of the midvein and dense pubescence on the abaxial leaf surface, while from those of C. mollicoma from other regions differ by nutlet with dense resinous glands and glabrous or sparsely villous at apex. Principal Component Analyses based on morphometric characters recognise the Tibetan populations as a separate group. Nuclear ribosomal ITS sequence variations show stable and distinct genetic divergences between the Tibetan populations and C. monbeigiana or C. mollicoma by two or three fixed nucleotide mutations. Phylogenetic analysis also identified three respective genetic clusters and the C. mollicoma cluster diverged early. In addition, the Tibetan populations show a disjunct geographic isolation from the other two species. Therefore, C. tibetana, based on the Tibetan populations, is here erected as a new species, distinctly different from C. monbeigiana and C. mollicoma.
Department其他
KeywordCarpinus Tibetana New Species Tibet
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10870
Collection其他
Recommended Citation
GB/T 7714
Lu, Zhiqiang,Li, Ying,Yang, Xiaoyue,et al. Carpinus tibetana (Betulaceae), a new species from southeast Tibet, China[J]. PHYTOKEYS,2018(98):1-13.
APA Lu, Zhiqiang,Li, Ying,Yang, Xiaoyue,&Liu, Jianquan.(2018).Carpinus tibetana (Betulaceae), a new species from southeast Tibet, China.PHYTOKEYS(98),1-13.
MLA Lu, Zhiqiang,et al."Carpinus tibetana (Betulaceae), a new species from southeast Tibet, China".PHYTOKEYS .98(2018):1-13.
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