Hygrobiella laxifolia was found in the southernmost flank of Primorsky Territory (Russian Far East) that is the only record of the species in continental part of temperate Asia and the second record of the taxon in the areas with monsoon climate in eastern Eurasia. The present record confirms possibility of occurrence of the taxon in other areas of East Asia under monsoon climate. Paper provides discussion on distribution of the taxon, as well as illustrations prepared from newly collected material of the species.