Chinese Journal of Tropical Crops >
Five Newly Recorded Species of Orchidaceae in Tibet
Received date: 2021-11-15
Revised date: 2021-12-22
Online published: 2022-04-24
The characteristics of regional background plant species are of great significance to the study of flora and plant species evolution. Orchids are the most evolved group of angiosperms, and the distribution and population characteristics have been focused for a long time. Tibet is a hot area of orchids distribution in China, especially in Yarlung Zangbo Grand Canyon, the world’s largest grand Canyon and where the background information of orchids is still unclear. As a result, many investigations have been carried out and lots of studies about newly records and new species of Orchidaceae have been reported in recent years. In order to understand Orchidaceae in Yarlung Zangbo Grand Canyon, the member of forestry Innovation Team of Xizang Agriculture and Animal Husbandry University have investigated the resources of orchids in the Grand Canyon for many times in recent years. After identification, 5 newly records species of orchidaceae were observed in Tibet, which were Dendrobium praecintum, Dendrobium sulcatum, Dendrobium thyrsiflorum, Odontochilus lanceolatus, and Rhomboda tokioi. All of the five newly Tibetan records of orchids were founded in Modog County, Tibet Autonomous Region. In additon, D. praecintum, D. sulcatum, D. thyrsiflorum and D. tokioi are widely distributed in the southern of the Himalayas, but this study was the first report that the four species were existed in Tibet. Moreover, our results indicated that the four orchids maybe continuously distributed from Sikkim to Yunnan in the southern of the Himalayas to some extent. Additionally, the distribution area of A. lanceolatus is a newly distributed site in China (previously reported in Guangdong, Taiwan, and so on). Therefore, our results have values for the diversity and floristic characteristics of orchids in Yarlung Zangbo Grand Canyon.
Key words: Orchidaceae; newly recorded; Tibet
ZHAO Jiamin , LI Mengkai , PANG Shenshen , ZHENG Weilie , XING Zhen , ZHOU Peng , WANG Wei . Five Newly Recorded Species of Orchidaceae in Tibet[J]. Chinese Journal of Tropical Crops, 2022 , 43(4) : 710 -713 . DOI: 10.3969/j.issn.1000-2561.2022.04.007
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