Walter Stephen Judd
|Born||1951 (age 69–70)|
|Alma mater||Michigan State University,|
|Known for||Plant taxonomy (Judd system)|
|Institutions||University of Florida|
|Author abbrev. (botany)||Judd|
Judd attended Michigan State University (B.S. 1973, M.S. 1974) and Harvard University (Ph.D. 1978). He became an assistant professor in the Department of Botany at the University of Florida (1978–1983), associate professor (1983–1991) and professor in 1991. He was president of the American Society of Plant Taxonomists 2000–2001.
- American Society of Plant Taxonomists: Asa Gray Award 2011
- National Museum of Natural History: José Cuatrecasas Medal for Excellence in Tropical Botany 2012.
- Judd, Walter S. (1999–2008). Plant systematics: a phylogenetic approach. 3rd ed. Sinauer Associates. ISBN 0-87893-407-3. Retrieved 29 January 2014.
- Judd, Walter S.& Graham A. (2017). Flora of Middle-Earth: Plants of J.R.R. Tolkien's Legendarium. Oxford University Press. ISBN 9780190276317.