3 2 . Lactobacillus 



Motility in the genus Lactobacillus appears to be very rare 

 and in Bergey's Manual all the species listed are described as 

 nonmotile. A strain labeled Lactobacillus plantarum was received 

 from Dr. P. Arne Hansen of the University of Maryland ( Fig. 34 ) . 



Flagellar Characteristics 

 The culture studied was motile and fairly well flagellated with 

 peritrichous flagella. No variants were seen. The curvature of the 

 flagella was very uniform with an average wavelength of 2.26 

 microns and amplitude of 0.56 micron. Whatever phylogenetic 

 relationship there may be between lactobacilli and streptococci to 

 justify placing them in the same family is not apparent in the 

 flagellation. 



3 5 . Corynebacterium 



Reports of motility in the genus Corynebacterium appears 

 limited to the phytopathogenic group and one cellulolytic or- 

 ganism variously labeled CeJlulomonas fimi or Corynebacterium 

 fimi. No systematic study was made of any other corynebacteria. 

 One strain of Corynebacterium fimi was received from Dr. H. W. 

 Reuszer of Purdue University. The following phytopathogens 

 were furnished by Dr. Mortimer P. Starr of the University of 

 California: Corynebacterium tritici (CT-102), Corynebacterium 

 michiganense (CM-6), Corynebacterium poinsettiae (CP-1 and 

 CP-42), Corynebacterium flaccumfaciens (CF-18 and CF-8). The 

 phytopathogens studied were typical of the genus morphologically 

 and physiologically. Three motile strains of Corynebacterium 

 citreum-mobile were received from Dr. Werner Kohler in Ger- 

 many. The three strains were culturally and morphologically iden- 

 tical. They produced a dark yellow pigment and grew readily on 

 simple peptone media. 



Flagellar Characteristics 



C. tritici (CT-102) and C. michiganense (CM-6) were non- 

 motile and flagella could not be demonstrated. Strain CP-1 of C. 

 poinsettiae was nonmotile and nonflagellated, but strain CP-42 



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