Guide to the Vascular Flora of Illinois

Robert H. Mohlenbrock taught botany at Southern Illinois University Carbondale for thirty-four years, obtaining the title of Distinguished Professor. After his retirement in 1990, he joined Biotic Consultants as a senior scientist teaching wetland identification classes in twenty-six states to date. Mohlenbrock has been named SIU Outstanding Scholar and has received the SIU Alumnus Teacher of the Year Award, the AMOCO Outstanding Teacher Award, and the Meritorious Teacher of the Year Award from the Association of Southeastern Biologists. Since 1984, he has been a monthly columnist for Natural History magazine. Among his fifty books and more than five hundred and sixty publications are Macmillan's Field Guide to North American Wildflowers, Field Guide to the U.S. National Forests, and Where Have All the Wildflowers Gone?