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A Gram-stain-negative, non-spore-forming, short rod-shaped, non-motile, light-pink bacterial strain, MIMtkLc17(T), was isolated from biological soil crusts collectedln Liangcheng, Inner Mongolia. Growth of strain MIMtkLc17(T) was observed at 2-35 degrees C and in the presence of 1% (w/v) NaCl. Phylogenetic analysis of 16S rRNA gene sequences showed that sequence similarities between strain MIMtkLc17(T) and the type strains of species of the genus Hymenobacter ranged from 89.93% to 96.49%. Strain MIMtkLc17(T) can secrete mass polysaccharide. The major fatty acids of strain MIMtkLc17(T) were iso-C-15 :0, summed feature 3 (C-16 : 1 omega 7c/C-16 :1 omega 6c), C-16 : 1 omega 5c and summed feature 4 (iso-C-17 : 1 l/anteiso-C-17 : 1 B). The sole respiratory quinone was menaquinone MK-7. The G+C content of the chromosomal DNA was 57.8 mol%. The results of phylogenetic, chemotaxonomic and phenotypic characterization indicated that strain MIMtkLc17(T) can be distinguished from all known species of the genus Hymenobacter and represents a novel species of this genus, for which the name Hymenobacter terrenus sp. nov. is proposed. The type strain is MIMtkLc17(T) (=MCCC 1K0050(7)T=KCTC 42636(T)).