Jan Hendrik Ietswaart (1940–2004), Dutch botanist.

IPNI standard form: Ietsw.

Taxon names authored

(List may be incomplete)

• 15 taxon names authored by Jan Hendrik Ietswaart

Publications

(List may be incomplete)

• Ietswaart, J.H. 1974. Cyclamen × wellensiekii (C. libanoticum × C. cyprium) hybr. nov. Acta Botanica Neerlandica 23(4): 555–559. DOI: 10.1111/j.1438-8677.1974.tb00970.x Reference page. 
• Ietswaart, J.H. 1980: A taxonomic revision of the genus Origanum (Labiatae). Leiden Botanical Series 4: 1–156. PDF Reference page. 
• Ietswaart, J.H. 1990: Infraspecific delimitation of the Cyclamen graecum complex. Cyclamen Soc. J. 14(2): 49–53. Reference page. 
• Ietswaart, J.H., 2005: A review of species limits in Cyclamen L. (Primulaceae). Cyclamen, J. Cyclamen Soc. 29: 18–23. Reference page.  (Death year, full forename)