SERIES AND SPECIES OF GENUS STREPTOM1 CES 



1 25 



Table 12 

 Identification of Streptomyces Qaveolus (Waksman, L919; Takahashi, L953; Waksman, L957) 



Chanu Irri-Ii. - 



Morphology 



Sporophorea 



Spores 

 Synt betic agar 



Subst rale growth 



Aerial mycelium 

 Soluble pigmenl 



Calcium malate- 



\H,('l agar 



Subsl rale growth 



Aerial mycelium 



Soluble pigmenl 



Nutrient agar 

 Sulist rate growth 



Aerial mycelium 

 Soluble pigmenl 



( relatin 

 Substrate grow ih 

 Aerial mycelium 

 Soluble pigment 

 Liquefaction 



Potato 



Subsl rale grow I li 

 Aerial mycelium 

 Color of plug 



( Hucose broth 

 Substrate growth 

 Aerial mycelium 

 Soluble pigmenl 



Milk 



Nitrate reduction 

 Antibiotic production 



Numerous spirals on all media 



Oval to elliptical 



Lighl sulfur yellow turning cad 



mium-yellow 

 White w it h ash gray patches 

 Empire-yellow 



( 'ream colored 



Mouse gray, with white margin 



None 



Wrinkled, white 



Abundant , white 

 None 



Abundant yellowish pellicle 



White 



( rolden to faint brown 



Rapid 



Wrinkled, cream colored 



White 



Faint brown 



Thin, yellow pellicle 



White 



( iolden 



Rapid coagulation and peptoniza- 

 tion 

 Si rong 



Produces act inoinvcin 



Numerous spirals on synthetic media 



Spherical or oval, 0.8 by 1.2 M 



Antimony yellow to chamois colored 



White, later smoke gray 

 Buff yellow 



Pale olive buff to yellow ocher 

 Vinaceous-buff to light mouse-gray 

 None or faint yellowish 



Colorless to whitish, reverse cinnamon 

 buff 



White 



Golden yellow 



Wrinkled, yellow 



White 



Faint yellowish brown 



Medium 



Wrinkled, golden yellow to orange 

 White to seashell pink 



Faint brownish 



Colonial buff to honey-yellow 



White to smoke-gray 

 Yellowish (golden yellow 

 Rapid coagulation and strong peptoni 

 zation 



Posit ive 

 Produces fiaveolin 



other morphological and cultural differences A culture described as S. armillatus 



between this culture and the two older cul- (Mancy-Courtillel et al., 1954) appeared, on 



tares, justified creation of a separate species, the basis of the description, to be sufficiently 



especially because of the ability of S. rimo- close to S. rimosus to throw doubt upon its 



SUS to produce an important new antibiotic. distinct identity. Like the lat tor, it produced 



In view of the greal variability of these spirals in its aerial mycelium; on synthetic 



organisms and the temptation to establish agar it formed very poor growth without any 



separate species on the basis of minor differ- aerial mycelium and without pigmentation; 



ences in pigmentation, any attempi to on nutrient agar, it produced yellow-gray 



create such new species must be considered growth with poorly developed white aerial 



critically. mycelium and no soluble pigment ; on potato 



