FAMILY XII. CORYNEBACTERIACEAE 



Bergey et al., Manual, 1st ed., 1923, 158.) 



cel.la'se.a. M.L. adj. cellaseus pertaining 

 to cellulose. 



Angular rods, 0.4 to 0.5 by 0.8 to 2.0 mi- 

 crons, occasionall}^ clubbed, curved or 

 branched. Motile by means of one or a few 

 l)eritrichous Hagella. Gram-variable, ap- 

 pearing most commonly as Gram-negative. 



Gelatin agar: Gelatin hydrolyzed. 



Gelatin stab: Ver}^ scant crateriform 

 liquefaction in 10 days. 



Agar slant: Moderate, smooth, glistening, 

 white or ivory-colored growth; lacks deep 

 yellow pigmentation. 



Broth: Uniformly turbid. 



Filter paper in 0.5 per cent peptone broth: 

 Paper strip reduced to a pulpy mass or 

 weakened sufficiently so that the fibers sep- 

 arate on slight agitation. 



Potato: Smooth, opaque, cream-colored 

 growth; freshly isolated strains may fail to 

 grow on potato. 



Acid from glucose, maltose, lactose, su- 

 crose and starch; usually no acid from glyc- 

 erol or mannitol. 



Acetylmethylcarbinol not produced. 



Starch is hydrolyzed. 



Nitrites produced from nitrates. 



Ammonia not produced. 



Optimum temperature, between 28° and 

 33° C. 



Source: Isolated from soil from Utah. 



Habitat: Probably widely distributed in 

 soil. 



3. Cellulomonas aurogena (Kellerman 

 et al., 1913) Bergey et al., 1923. (Bacillus 

 aurogenus Kellerman, McBeth, Scales and 

 Smith, Cent. f. Bakt., II Abt., 39, 1913, 505; 

 Cellulomonas aurogenes (sic) Bergey et al.. 

 Manual, 1st ed., 1923, 157.) 



au.ro'ge.na. L. noun aurum gold; L. v. 

 gigno to produce; M.L. adj. aurogenus gold 

 (color) -producing. 



Cells 0.5 by 1.4 microns. Motile by means 

 of one to three peritrichous flagella. Gram- 

 negative. 



Gelatin stab: Slow liquefaction, usually 

 not apparent until 7 to 10 days. 



Agar slant: Scant to abundant, flat, yel- 

 low growth. 



Cellulose agar: Variable enzymatic zones 

 surround colonies. 



Broth: Turbid. 



Potato: Scant to abundant, yellow 

 growth. 



Acid from glucose, maltose, lactose, su- 

 crose, starch and gl3'cerol. 



Nitrites produced from nitrates. 



Ammonia produced. 



Aerobic, facultatively anaerobic. 



Optimum temperature, between 28° and 

 33° C. 



Comment: A non-chromogenic variety 

 of this species has been described by Keller- 

 man et al. (Cent. f. Bakt., II Abt., 39, 1913, 

 506). 



Source : Isolated from soil from Louisiana 

 and Maine. 



Habitat: Soil. 



4. Cellulomonas pusilla (Kellerman 

 et al., 1913) Bergey et al., 1923. (Bacillus 

 pusilus (sic) Kellerman, McBeth, Scales 

 and Smith, Cent. f. Bakt., II Abt., 39, 1913, 

 512; Cellulotiionas pusila (sic) Bergey et al., 

 Manual, 1st ed., 1923, 161.) 



pu.sil'la. L. dim. adj. pusillus very small. 



Cells 0.4 to 0.6 by 0.8 to 1.5 microns. Mo- 

 tile by means of one to three peritrichous 

 flagella. Gram-negative. 



Gelatin stab: Slow liquefaction, usually 

 becoming apparent after 15 days. 



Agar slant: Scant, grayish white growth. 



Cellulose agar: Variable enzymatic zones 

 around colonies. 



Broth: Turbid. 



Potato: Scant growth when heavily inocu- 

 lated. 



Acid from glucose, maltose, lactose, su- 

 crose, starch and glycerol; no acid from 

 mannitol. 



Nitrites produced from nitrates. 



Ammonia produced. 



Aerobic, facultatively anaerobic. 



Optimum temperature, between 28° and 

 33° C. 



Source: Isolated from soil from the Dis- 

 trict of Columbia and from South Carolina. 



Habitat: Soil. 



5. Cellulomonas fimi (McBeth and 

 Scales, 1913) Bergey et al., 1923. (Bacterium 

 fimi McBeth and Scales, U. S. Dept. Agr. 

 Plant Ind. Bull. 266, 1913, 30; Cellulomonas 

 fima (sic) Bergey et al.. Manual, 1st ed., 



