California's Plant Life (IMAGE) University of California - Santa Barbara Caption NCEAS research revealed that the remarkable diversity of California's plant life is largely the result of low extinction rates over the past 45 million years. Credit Jenn Yost Usage Restrictions None 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.