1050 



MANUAL OF DETERMINATIVE BACTERIOLOGY 



Litmus milk : Growth but no digestion 

 or curd formation. 



Highly aerobic. 



Optimum temperature 25° to 30°C. 



Source : Isolated from soil. 



Habitat: Soil. Decomposes organic 

 matter. 



3. Sporocytophaga ellipsospora (Im- 

 senecki and Solntzeva) Stanicr. (Cjjto- 

 phaga ellipsospora Imsenecki and Solnt- 

 zeva, Bull. Acad. Sci. U.S.S.R., Ser. 

 Biol., No. 6, 1936, 1137; Stanier, Bact. 

 Rev., 6, 1942, 153 and 190.) 



Etymology: Greek ellipsis, an ellipse, 

 and spores, seed. 



Vegetative morphology : Flexible, 

 singly occurring rods, 0.4 micron wide 

 at the center and tapering to both ends. 

 Length 7.5 microns. May be straight, 



bent, U-shaped, or S-shaped. Show 

 creeping motility. 



Microcysts : Oval or somewhat elon- 

 gated, 0.9 to 1.2 by 1.6 to 1.8 microns 

 Almost always situated in closely-packed 

 aggregates, isolated individual micro- 

 cysts rare. Germinate bj^ elongation. 



Growth is strictly confined to cellulose. 

 On mineral salts-silica gel plates covered 

 with filter paper, orange, glistening, 

 mucilaginous patches are produced. Ul- 

 timately the filter paper is completely 

 dissolved and the patches become trans- 

 lucent. 



Ammonia, nitrate and peptone can 

 serve as sources of nitrogen. 



Strictly aerobic. 



Optimum temperature 28° to 30°C. 



Source: Isolated from soil. 



Habitat : Soil. Decomposes cellulose 



