Infographics 1/3 of the Tropical African Flora Might Be Threatened with Extinction (image) Institut de recherche pour le développement Share Print E-Mail Caption 1/3 of the tropical african flora might be threatened with extinction. Credit T. Stévart et al. Usage Restrictions mention copyright Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.