The University of Tennessee announces a symposium on the Evolution of Higher Basidiomycetes, sponsored by the National Science Foundation, and honoring the 80th birthyear of Dr. L. R. Hesler. The symposium will be held at the University August 5-10, 1968, and will bring together the world’s leading investigators to discuss the morphological, cytological, genetic, nutritional and biochemical approaches to the study. Information on registration may be obtained by writing directly to: Dr. Ronald H. Petersen, Department of Botany, University of Tennessee, Knoxville, Tennessee 37916.