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We describe a new Streptomyces species, for which the name Streptomyces spinoverrucosus is proposed. This species is characterized as follows: green, yellow, red, and gray aerial mass colors: spiral spore chains; spiny and warty spore surfaces; reverse of the colony colorless or faint yellow on salts starch agar and brownish red on other media (the red pigment is a pH indicator); melanoid pigments formed in International Streptomyces Project media 1, 6, and 7; brown, red, or reddish brown water-soluble pigments; and a characteristic carbon utilization pattern. This species differs from all Streptomyces species described previously on the basis of its aerial mass color, color of reverse of colonies, and color of water-soluble pigments. The type strain of S. spinoverrucosus is Diab 163MA (= NCIB 11666).
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