FAMILY III. STREPTOMYCETACEAE 749 



11. Soluble brown pigment only occasionall}^ produced; growth usually colorless; 

 odor very strong. 



73. Streptomyces odorifer. 

 C. No soluble pigment produced in organic media. 



1. Proteolytic action strong. 



a'. Growth yellowish to orange-brown. 



b^ Aerial mycelium white to rose-colored. 



74. Streptomyces roseoflavus. 



h^. Growth only on potato and serum yellowish; aerial my- 

 celium white. 



75. Streptomyces putrificus. 



a*. Growth yellowish green to citron-yellow; aerial mycelium white 

 to yellow to pinkish. 



76. Streptomyces citreus. 



a'. Growth golden yellow to orange-colored; soluble pigment yel- 

 low to orange; growth may also be red-brown and pigment 

 orange. 



77. Streptomyces fulvissimus. 



a*. Growth colorless to cream-colored; aerial mycelium scant, 

 white. 



78. Streptomyces chrysomallus. 

 bi. Pigment on nutrient agar faint yellowish. 



79. Streptomyces gougerotii. 

 h^. No soluble pigment; forms oidiospores. 



80. Streptomyces farinosus. 

 b^ Pigment on synthetic media yellowish. 



81. Streptomyces albidus. 



a*. Growth white to cream-colored; aerial mycelium flesh-colored 

 to light cinnamon-colored. 



82. Streptomyces cinnamoneus. 



a*. Growth on synthetic media dark to black to almost bluish 

 black; aerial mycelium white to gray. 



b^ Soluble pigment produced on autolysis. 



83. Streptomyces violaceoniger. 

 b^. No soluble pigment. 



84. Streptomyces gedanensis. 



aJ. Growth colorless to yellowish to olive-buff; aerial mycelium 

 water-green. 



85. Streptomyces griseus. 



a^. Growth bright orange to golden red; aerial mycelium white to 

 yelow. 



86. Streptomyces longissimus. 



a^. Growth yellow to olive-ocher; aerial mycelium mouse-gray. 



87. Streptomyces olivaceus. 



a^". Growth yellow; aerial mycelium scant or rose-j^ellow. 



88. Streptomyces microfiavus. 



a". Growth yellowish to brown to reddish brown. Aerial mj^celium 

 white to mouse-gray. 



89. Streptomyces cacaoi. 



a^2. Aerial mycelium white; conidia gray to dark gray. 



90. Streptomyces marinus. 



2. Proteolytic action limited. 



a'. Soluble pigment produced on synthetic agar. 



