streptomyces caespitosus streptomyces caespitosus streptomyces caespitosus is a species of actinobacteria. it produces chemotherapeutic drug mitomycin c. streptomyces caespitosus scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: streptomycetales family: streptomycetaceae genus: streptomyces species: s. caespitosus binomial name streptomyces caespitosussugawara and hata 1956