Pollen Grains and DNA Barcodes (IMAGE) Botanical Society of America Caption Combining the new <i>rbcL</i> database with the ITS2 sequence library enabled researchers to identify eight of nine species of pollen grains (left) by looking for unique differences in their DNA barcodes (right). Credit Dr. Karen L. Bell Usage Restrictions Please cite the article: Bell, K. L., V. M. Loeffler, and B. J. Brosi. 2017. An <i>rbcL</i> reference library to aid in the identification of plant species mixtures by DNA metabarcoding. <i>Applications in Plant Sciences</i> 5(3): 1600110. doi:10.3732/apps.1600110. Articles and materials published in <i>Applications in Plant Sciences</i> are licensed under a Creative Commons Attribution license (CC-BY-NC-SA). 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.