206 



THE ACTINOMYCOTIC, Vol. II 



(Waksman, S. A. and Curtis, R. E. Soil Sci. 

 1: 116, 1910; 8: 121, 1919). 



Morphology: Colony has tendency to 

 crack and surface growth to exfoliate and 

 peel off. Sporophores usually straight or 

 slightly wavy; on some media there is a 

 tendency to produce spirals. Spores oval, 1.0 

 to 1.5 by 1.2 to 1.8 m- 



Sucrose nitrate agar: Growth smooth, 

 colorless, becoming brown to blue. Aerial 

 mycelium white. 



Malate-glycerol agar: Growth cream- 

 colored. Aerial mycelium white. No soluble 

 pigment. 



Glucose-asparagine agar: Growth cream- 

 colored, turning brown. Aerial mycelium 

 white, appearing late. 



Nutrient agar: Growth colorless. No 

 aerial mycelium. Soluble pigment absent or 

 brownish. 



Potato: Growth wrinkled, gray, becoming 

 brown. No aerial mycelium. No soluble pig- 

 menl . 



Gelatin: Growth cream-colored. Aerial 

 mycelium white or absent. Liquefaction 

 faint to fair. Melanin-negative. 



Milk: Cream-colored ring. Soft coagula- 

 tion and slow peptonization. 



Starch media: Growth restricted, gray 

 becoming brown. Aerial mycelium light 

 buff -gray. Hydrolysis of starch medium, 

 incomplete. 



[nvertase: Positive. 



Cellulose: Growth good. 



Nitrate reduction: Positive. 



Production of H-..S: Negative. 



Temperature: Optimum 37°C. 



Antagonistic properties: Positive. 



Habitat: Soil. 



Remarks: Krassilnikov (1949) considered 

 this organism as a variety of one of the 

 chromogenic groups . 



Type culture: IMRU 3310. 



75. Streptomyces felleus Lindenbein, 1952 

 (Lindenbein, W. Arch. Mikrobiol. 17: 361- 



383, 1952). 



Morphology: Sporophores long, straight, 

 branching. Spores spherical, smooth. 



Glycerol nitrate agar: Growth smooth, 

 yellow-brown. Aerial mycelium velvety 

 gray-white. Soluble pigment yellowish- 

 brown. 



Glucose-asparagine agar: Growth colorless 

 to brownish-yellow. Aerial mycelium gray- 

 white. Soluble pigment brownish. 



Glycerol malate agar: Growth colorless 

 to yellowish. Aerial mycelium powdery, 

 gray- white. Soluble pigment yellowish- 

 brown. 



Nutrient agar: Growth colorless, brown- 

 ish-yellow reverse. No aerial mycelium. 

 Soluble pigment light brownish-yellow. 

 Melanin-negative. 



Glucose-peptone agar: Growth yellowish- 

 brown. Aerial mycelium gray-white. Soluble 

 pigment light brown. 



Starch media: Growth lichenoid, colorless. 

 Aerial mycelium white. No soluble pigment. 

 Hydrolysis strong. 



Potato: Growth brownish-yellow. No 

 aerial mycelium. Soluble pigment absent or 

 pinkish. 



Gelatin: Growth colorless. No aerial myce- 

 lium. No soluble pigment. No liquefaction 

 by one strain, positive by another. 



Milk: Growth brownish to orange. Aerial 

 mycelium gray-white. Peptonization me- 

 dium. 



Cellulose: No or weak growth. 



Production of H L .S: Negative. 



Odor: Typical earthy. 



Taste: Gall-bitter. 



Antagonistic properties: Produces anti- 

 biotic picromycin. 



Remarks: Related to S. fimicarius. Ett- 

 linger et el. (1958) considered this organism 

 as belonging to S. olivaceus. 



Type culture: IMRU 3(159. 



70. Streptomyces fervens DeBoer et al., 

 1959 (DeBoer, C, Dietz, A., Evans, J. S., 

 and Michaels, R. M. Antibiotics Ann. 1959- 

 19(10, pp. 220-220). 



