Smithsonian National Museum of Natural History

John Wiersema

Research Associate
Department / Division

Ph.D., 1984, Biology, University of Alabama, Tuscaloosa, Alabama

M.S., 1979, Biology, University of Alabama, Tuscaloosa, Alabama

B.S., 1974, Psychology & Sociology, Western Michigan University, Kalamazoo, Michigan

Research Interests

Plant nomenclature: a member of the Editorial Committee for the last 3 Codes, and Vice-rapporteur for the Shenzhen Code; with ongoing responsibility for the content of the Code Appendices database.

Economic botany: 3+ decades curating data on agricultural plants for the Germplasm Resources Information Network (GRIN) of USDA’s Agricultural Research Service.

Systematics of Nymphaeales, esp. Nymphaea, on a global basis.

Journal Article
Book Chapter
  • Wiersema, John H. and Leon, B. 2016. "The GRIN Taxonomy crop wild relative inventory." In Capturing wild relative and landrace diversity for crop improvement.. Maxted, N., Dulloo, M. E., and Ford-Lloyd, B. V., editors. 453–457. CAB International.
  • Wiersema, John H., McNeill, J., Turland, N. J., Barrie, F. R., Buck, W. R., Demoulin, V., Greuter, W., Hawksworth, D. L., Herendeen, P. S., Knapp, S., Marhold, K., Prado, J., Prud'homme van Reine, W. F., and Smith, G. F., editors. 2015. International Code of Nomenclature for algae, fungi, and plants (Melbourne Code) adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011. Appendices II-VIII. Königstein, Germany: Koeltz Scientific Books. In Regnum vegetabile v. 157.