Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences
Passiflora xishuangbannaensis reintroduced to the wild
Source:     Release time :2019-08-28

Xishuangbanna Tropical Botanical Garden (XTBG) is pleased to announce that 60 individuals of critically endangered plant species named Passiflora xishuangbannaensis were reintroduced to the wild last week at Mengyang Nature Reserve in Xishuangbanna. 

The plant individuals were released in partnership with Xishuangbanna National Nature Reserve Administration. 

Passiflora xishuangbannaensis has only been known to the scientific community since 2005. It is a passion flower vine endemic to Yunnan and only found within Xishuangbanna.   

Passiflora xishuangbannaensis is distinguished from other members of Passiflora supersection Disemma by being completely glabrous, having one to two flowers per node, thickened coronal filaments that are brown to purple at the base, deeply bilobed leaves with strong variegation along the three primary veins, and a v-shaped arrangement of numerous abaxial laminar nectaries. 

During field survey in 2015, fewer than 100 individuals were found by XTBG researchers. Their habits are under human disturbance. Its conservation status was considered as critically endangered. 

To protect the passion flower vine, XTBG researchers propagated Passiflora xishuangbannaensis and have got 200 individuals.  

60 individuals were reintroduced to the wild o August 21. XTBG will carry out further monitoring and study to get high ratio of reintroduction success. 


Reintroduction is a general term to describe the controlled placement of plant material into a natural or managed ecological setting. The reintroduction of plant species to the wild becomes an increasingly important tool for the conservation and management of natural and semi-natural habitats and wild populations of plants. 

Passiflora xishuangbannaensis  in natural habitat
Passiflora xishuangbannaensis  propagated by XTBG researchers
Passiflora xishuangbannaensis  reintroduced to the wild
XTBG researchers prepare for reintroducing Passiflora xishuangbannaensis  to the wild at Mengyang.
Reintroduction work at Mengyang.
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