Adam Davis, Richard Lankau and Greg Spyreas, University of Illinois at Urbana-Champaign (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption Adam Davis (left) of the US Department of Agriculture, Illinois Natural History Survey, postdoctoral researcher Richard Lankau (center) and INHS plant ecologist Greg Spyreas found that the invasive garlic mustard plant produces lower levels of a defensive toxin after about three decades in a new location. Credit Photo by L. Brian Stauffer, U. of I. News Bureau. Usage Restrictions Photo may be used only with stories about the research described in the news release. Please credit: Photo by L. Brian Stauffer, U. of I. News Bureau. Share Print E-Mail 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.