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A non-motile and rod-shaped bacterium, designated strain WW84(T), was isolated from freshwater collected from the Woopo wetland (Republic of Korea). Cells were Gram-stainnegative, aerobic, catalase-positive and oxidase-negative. The major fatty acids were C-16 : 0, C-18 : 0, iso-C-15 : 0 and iso- C17 : 1I and/or anteiso-C17 : 1B. The strain contained MK-7 as the major isoprenoid quinone, phosphatidylethanolamine as the major polar lipid and sym-homospermidine as the major polyamine. The DNA G-C content was 59 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain WW84T forms an evolutionary lineage within the radiation including the members of the genus Hymenobacter with Hymenobactero cellatus Myx 2105(T) (96.96% sequence similarity) as its nearest neighbor. A number of phenotypic characteristics distinguished strain WW84(T) from the related members of the genus Hymenobacter. On the basis of the evidence presented in this study, a novel species, Hymenobacter coalescens sp. nov. is proposed with strain WW84(T) (=KCTC 32530(T) =JCM 19493(T)) as the type strain.