The chorology and ecology of Rumex confertus Willd. in the Czech Republic is reviewed. In Central Europe R. confertus behaves as an invasive adventive plant of Eastern migration route. In the Czech Republic four localities of the species, with the status ephemerophyte to epoecophyte occur. The locality Praha–Lochkov on the west margin of secondary distribution area of R. confertus was described. The plant is established in the above-mentioned locality in stands of the Arction lappae Tüxen 1937 em. Gutte 1972 alliance.
Keywords: Rumex confertus, chorology, ecology, adventive plant, introduction, ephemerophyte, epoecophyte, Czech Republic, Europe.