Dillenia biflora flower (IMAGE) University of South Australia Caption Mature Dillenia biflora flower with corolla removed by hand, exposing the pollen-filled anthers. Credit Assoc Prof S. 'Topa' Petit, UniSA. Usage Restrictions With credit only License Original 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.