We isolated a kasugamycin-producing actinomycete, strain MF861-C4, which had spiny spore surface. This strain was different from Streptomyces kasugaensis but rather close to Streptomyces albulus with regard to morphological, cultural, and physiological characteristics, DNA homology and partial base sequences of 16S ribosomal RNA. The strain MF861-C4 was identified as S. albulus.
