Diversity of Clover Species (image) Washington University in St. Louis Share Print E-Mail Caption The clover genus Trifolium is surprisingly varied. Of the clover species shown here, T. repens (bottom right), commonly known as white clover, and T. isthmocarpum (middle left), a salt-tolerant species known as Moroccan clover, include both cyanide-producing and cyanide-less plants, although some of the other species have one of the two genes needed to synthesize cyanide. Credit Kenneth Olsen Usage Restrictions Please credit. 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.