Molecular and morphological evidence for a new species of Pogostemon (Lamiaceae) from Hainan Island, China
文献类型： 外文期刊
作者： Yuan, Langxing 1 ; Tan, Gan 2 ; Zhang, Wenhua 2 ; Xue, Bine 4 ; Deng, Jiwen 5 ; Liu, Lei 5 ; Yao, Gang 2 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou 571101, Hainan, Peoples R China
2.South China Agr Univ, Coll Forestry & Landscape Architecture, Guangzhou 510642, Peoples R China
3.Haikou Duotan Wetlands Inst, Haikou 570125, Hainan, Peoples R China
4.Zbongkai Univ Agr & Engn, Coll Hort & Landscape Architecture, Guangzhou 510225, Peoples R China
5.Hainan Trop Rainforest Natl Pk, Yinggeling Branch, Baisha 572800, Peoples R China
关键词： China; Lamiaccae; Pogostemon; Pogostemoneae; taxonomy
期刊名称：PHYTOKEYS （ 影响因子：1.317； 五年影响因子：1.49 ）
ISSN： 1314-2011
年卷期： 2022 年 188 期
页码：
收录情况： SCI
摘要： Pogostemon hainanensis, a new species of Lamiaceae from Hainan Island, China, is described. The phylogenetic position of the new species within Pogostemon was investigated based on analyses of the nuclear ribosomal internal transcribed spacer (nrITS) and five plastid markers (viz. matK, psbA-trnH, rbcL, rsp16, trnL-F). The results show that P. hainanensis is supported to be a member of subgenus Pogostemon and is sister to P. parviflorus, a species widely distributed from Eastern Himalaya, through the Indo-China peninsula to China. Morphologically, the new species can be distinguished from all the other taxa of subgenus Pogostemon in having long petioles usually 4.5-11.5 cm in length, and the calyx teeth 2/3 to subequal as long as the calyx tube. The new species differs from P. parviflorus further by its obviously double serrate leaf margin, spikes of inflorescence usually 2.5-8.0 cm long, calyx 4-5 mm long and corolla 6-7 mm long.
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