Goldfields and Butterfly (IMAGE) University of California - Santa Cruz Caption An endangered bay checkerspot butterfly (Euphydryas editha bayensis) on a California goldfields (Lasthenia californica) flower within the experimental site at Coyote Ridge. This endangered butterfly relies exclusively on plants in the serpentine grasslands in the San Francisco Bay Area. Changes in the timing of seasonal events can lead to mismatches between species that depend on one another, such as plants that flower when their insect pollinators aren't around. Credit Amy Wolf Usage Restrictions For use only with news coverage of this research License Licensed content 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.