Photo taken at a laboratory of Chenshan Botanical Garden on Oct. 10, 2019 shows the different appearances of Ceratopteris pteridoides leaves in Shanghai, east China. Ceratopteris pteridoides, a wild plant under the state second-level protection, has been found in Shanghai. (Xinhua/Zhang Jiansong)
Photo taken at a laboratory of Chenshan Botanical Garden on Oct. 10, 2019 shows the Ceratopteris pteridoides in Shanghai, east China. Ceratopteris pteridoides, a wild plant under the state second-level protection, has been found in Shanghai. (Xinhua/Zhang Jiansong)
Photo taken at a laboratory of Chenshan Botanical Garden on Oct. 10, 2019 shows the Ceratopteris pteridoides in Shanghai, east China. Ceratopteris pteridoides, a wild plant under the state second-level protection, has been found in Shanghai. (Xinhua/Zhang Jiansong)
Photo taken at a laboratory of the Chenshan Botanical Garden Oct. 10, 2019 shows ceratopteris pteridoides in Shanghai, east China. Ceratopteris pteridoides, a wild plant under the state second-level protection, has been found in Shanghai. (Xinhua/Zhang Jiansong)
Researcher Yu Junhao observes ceratopteris pteridoides at a laboratory of th Chenshan Botanical Garden in Shanghai, east China, Oct. 10, 2019. Ceratopteris pteridoides, a wild plant under the state second-level protection, has been found in Shanghai. (Xinhua/Zhang Jiansong)
