Emeritus Faculty
| Roy Curtiss III | George William and Irene Koechig Freiberg Professor of Biology Emeritus | |
| George Johnson | Professor Emeritus, Department of Biology | |
| David Kirk | Professor Emeritus, Department of Biology | |
| Daniel Kohl | Professor Emeritus, Department of Biology | |
| Walter Lewis |
Professor Emeritus, Department of Biology University Research Ethnobotanist |
|
| Barbara Pickard | Professor Emeritus, Department of Biology | |
| Peter Raven |
George Engelmann Professor of Botany Emeriti President Emeritus Missouri Botanical Garden |
|
| Nobuo Suga | Professor Emeritus, Department of Biology |