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Appl Environ Microbiol. 1963 July; 11(4): 335-338

System of Color Wheels for Streptomycete Taxonomy

Biochemical Research Section, Lederle Laboratories Division, American Cyanamid Company, Pearl River, New York

ABSTRACT

In the sundry systems of streptomycete taxonomy, color of the sporulating aerial mycelium is frequently employed as a systematic criterion. Color series, each containing species of similar spore colors, are generally erected; however, the range of colors encompassed within a series is often not clearly delineated by the usual word description. Therefore, a system is proposed in which the color content of each series is more accurately defined by means of color tabs. Seven spore-color series are recognized (i.e., red, gray, yellow, blue, green, violet, and white), each of which is represented by a color wheel that displays the range of colors included therein. By comparing spore colors with the color wheels, unclassified isolates can readily be assigned to appropriate color groups.