抄録
Three different Streptomyces producing a new antibiotic albocycline were examined in reference to their taxonomic characteristics. It was concluded that two of the strains, S. MCRL-0129 and S. MCRL-0356, are new species of Streptomyces and they were named S. brunneogriseus nov. sp. and S. roseocinereus nov. sp., respectively. The third strain, S. MCRL-0355, was recognized to be a variety of S. roseochrontogenes and named S. roseochromogenes var. albocyclini var. nov.
