Tod F. Stuessy is Professor Emeritus at The Ohio State University and the University of Vienna. His research involves systematics, evolution, and biogeography of flowering plants, especially Asteraceae. He has published over 300 articles and 17 books dealing with different aspects of systematics including monography, phylogenetic and biogeographic analyses, and population genetic investigations. He has been interested in the evolution of plants of oceanic archipelagoes, especially in the Robinson Crusoe Islands, Chile. He has been President of the American Society of Plant Taxonomists (ASPT) and Secretary-General of the International Association for Plant Taxonomy (IAPT). For lifetime achievement in plant systematics, he has received the Asa Gray Award from the ASPT and the Engler Medal in Gold from the IAPT.