Prof. Dr. Tod F. Stuessy currently works at the Herbarium, 1350P Museum of Biological Diversity, Columbus, OH, USA. He completed his B.A. studies at DePauw University in 1965 and his Ph.D. studies at the University of Texas in Austin in 1968. His research involves many aspects of the systematics, evolution, and biogeography of flowering plants. Different types of his studies include monography, phylogenetic and biogeographic analysis, and population genetics. Another major emphasis of his research has been on island biology, particularly the evolution of the endemic species of the Robinson Crusoe (Juan Fernandez) Islands off the coast of Chile. A final area of research has dealt with concepts and methods of biological classification. He has 248 publications with 8141 citations and an h-index of 44 (Scopus, 7 November 2023).