Phylogenetic analysis of 'Sarraceniospora aurea' NBRC 14752 and strain NBRC 15120, based on 16S rRNA gene sequences, revealed that these organisms are related to members of the genus Actinocorallia. These organisms contained glutamic acid, alanine and meso-diaminopimelic acid as cell-wall amino acids and the menaquinones MK-9(H(4)), MK-9(H(6)) and MK-9(H(8)). The chemotaxonomic characteristics of the strains were consistent with those of the genus Actinocorallia. However, DNA-DNA hybridization and phenotypic characteristics revealed that the strains differed from the recognized species of the genus Actinocorallia. Therefore, we propose that 'Sarraceniospora aurea' NBRC 14752 and strain NBRC 15120 be reclassified in the genus Actinocorallia as a novel species, Actinocorallia aurea sp. nov. (type strain NBRC 14752(T)=DSM 44434(T)).