Contact: Diana Lutz
Washington University in St. Louis
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
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