128 ACTINOMYCETES 



Sucrose: Inversion positive. 



Antagonistic properties: Produces micromonosporin. 



Source: Soil. 



3. Micromonospora parva Jensen. (Jensen, H., Proc. Linnean Soc. 

 N. S. Wales, 57, 1932, 177.) 



Vegetative growth: Scant growth on glucose-asparagine agar; mycelium 

 thin, spreading widely into the agar, almost colorless to pale pink or orange. 



Aerial growth: Sporulation scant, giving rise to thin grayish, moist 

 crusts on the surface; spores oval, in mass gray-colored. 



Gelatin: Liquefaction positive. 



Milk: Unchanged; or coagulated, slowly redissolved with faintly acid 

 reaction. 



Starch : Hydrolysis positive. 



Cellulose: No decomposition. 



Nitrate: No reduction. 



Sucrose: No inversion. 



Source: Soil. 



4. Micromonospora globosa Krassilnikov. (Krassilnikov, N. A., Ray 

 fungi and related organisms, Izv. Akad. Nauk, Moskau, 1938, 134; Micro- 

 biology (USSR), 8, 1939, 179.) 



Vegetative growth: Rugose, at first very compact, later acquires a 

 pasty consistency, and bond with the medium becomes less fast. Color of 

 cultures varies from light yellow to orange-red. During fruit-bearing, 

 colonies are covered with a brownish black tarnish of conidia. 



Aerial growth: Conidia are formed at the ends of short branches, one 

 on each. Individual branches with conidia resemble grapevines. Conidia 

 spherical, 1.0-1.3 m; they arise by the swelling of the branch tips. The 

 swellings become round, acquire the shape of spheres, which, as the forma- 

 tion of the conidia proceeds, are divided from the branch by a transverse 

 septum. 



Milk: Coagulation; peptonization. 



Starch: Hydrolysis. 



Cellulose: No decomposition. 



Nitrate: Reduction to nitrite. 



Sucrose: Inversion. 



Source: Soil. 



5. Micromonospora coerulea Jensen. (Jensen, H., Proc. Linnean Soc. 

 N. S. Wales, 57, 1932, 173.) 



Vegetative growth: Slow growth on glucose-asparagine agar. Mycelium 



