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Streptomyces colonies on agar                    Streptomyces mycelium

What you should know:

Streptomyces forms one of the most important antibiotic-producing bacterial groups. It is a filamentous actinomycete with hyphae and (external) spores. The colonies seen in this photo show the presence of the mycelium and the colorful spores.


Domain Bacteria

    Phylum Actinobacteria

        Class Actinobacteria

Bergey's Manual Volume 5: The Actinobacteria