aerial creosotes (IMAGE) University of Texas at Austin Caption Creosotes (larger plants) and white bursage (smaller plants) cover the ground in Nevada's Boulder City Conservation Easement. Credit Young et al. / The University of Texas at Austin. Usage Restrictions include photo credit 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.