A Piecemeal Description of Streptomyces griseus (Krainsky) Waksman and Henrici

SUMMARY: Forty-six of the 48 strains named Streptomyces griseus in our collection have in common a distinctive pattern of properties and are believed to represent a recognizable taxonomic group, or aggregate, of this polytypic species. Seventy-seven additional strains bearing 51 different species names were found to possess the same pattern of characteristics. The distinguishing properties of this aggregate are described and compared with those of S. albus, S. fradiae and S. somaliensis.