Streptomyces nigrifaciens Waksman, 1961 Dataset Prokaryotic Nomenclature Up-to-Date (PNU) Rank SPECIES Published in Int. J. Syst. Bacteriol. 30::394 Classification genus Streptomyces species Streptomyces flavovirens Name Homonyms Streptomyces nigrifaciens Waksman, 1961