STUDIES ON THE CLASSIFICATION OF STREPTOMYCETES, PART XII THE MICROSCOPIC MORPHOLOGY AND OTHER CHARACTERISTICS OF STREPTOMYCES HYGROSCOPICUS AND MORPHOLOGICALLY RELATED STRAINS

The microscopic morphology of Streptomyces hygroscopicus and morphologically related strains are described. These strains have sinistrorse spirals in terminal filaments of side branches arisen from axial mycelia. Axial mycelia are fairly long but sometimes short, straight to flexous, and the branching system principally takes various monopodial forms in its early stage of growth, but often becomes to appear irregular after full growth has been attained. Side branches range from single to branched. Description of each strain employed is also given.