Close Up of <i>Cassytha</i> on Gorse (IMAGE) University of Adelaide Caption Close-up of Cassytha pubescens haustoria on the major invasive shrub gorse. Credit Photo by Casey Lauren O'Brien Usage Restrictions For use with this story 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.