Undated combo file photo provided by Sino-Africa Joint Research Center (SAJOREC) shows Warburgia ugandensis Sprague, also called pepper bark tree or Uganda Greenheart, which is commonly found in east Africa. The International Day for Biological Diversity falls on May 22. (SAJOREC/Handout via Xinhua)
International Day for Biological Diversity: plants in Africa
Source: Xinhua| 2021-05-22 07:57:06|Editor: huaxia