Abstract
The creation of the International Fossil Plant Names Index (IFPNI, 2014 onwards) with the aim of listing of all fossil plant species reveals a few new cases of homonymy between fossil and extant species. In the present paper there are proposed two new combinations in Hemitrapa Miki (1941: 289) and four replacing names for later homonyms of Trapa Linnaeus (1753: 120) that are illegitimate (Art. 53.1 of the International Code of Nomenclature for Algae, Fungi and Plants—ICN, McNeill et al., 2012).