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MANUAL OF DETERMINATIVE BACTERIOLOGY 



10. Cellulomonas gilva (McBeth) Ber- 

 gey et al. {Bacillus gilvus AIcBeth, Soil 

 Science, 1, 1916, 453; Bergey et al.. 

 Manual, 1st ed., 1923, 160.) From Latin 

 gilvus, pale yellow. 



Rods: 0.5 by 1.5 microns. Motile 

 with one to five peritrichous flagella. 

 Gram-negative. 



Gelatin stab: Moderate, yellowish- 

 white surface growth. Xo liquefaction. 



Agar colonies: Circular, convex, bu- 

 tyrous, canary -yellow, sometimes with 

 brownish rings, granular, entire. 



Agar slant: Filiform, yellowish-white 

 growth. 



Ammonia cellulose agar: Enzj-mic 

 zone not more than 1 mm. Entire col- 

 ony semi transparent. 



Peptone cellulose agar: Enzymatic 

 zone, 3 to 4 mm in 25 days. 



Broth: Slightly turbid. 



Filter paper broth: In 15 days, the 

 paper is reduced to a thin, white filmy 

 mass which disintegrates readily. 



Litmus milk: Acid, not digested. 



Potato: Abundant, canary -yellow 

 growth . 



Indole is formed. 



Nitrites produced from nitrates. 



Ammonia is produced. 



Acid from glucose, maltose, lactose, 

 sucrose, starch and glj'cerol. Xo acid 

 from mannitol. 



Aerobic, facultative. 



Optimum temperature 20°C. 



Source: Soil from California. 



Habitat: Soil. 



11. Cellulomonas ferruginea (Uull- 

 mann) Bergey et al. (Bacillus ferru- 

 gineus Ilullmann, Cent. f. Bakt., I Abt., 

 Orig., 24, 1898, 465; van Iterson, Cent, 

 f. Bakt., II Abt., 11, 1904, 694; not 

 Bacillus ferrugineus Rullmann, Cent. f. 

 Bakt., I Abt., 24, 1898, 467; Bergey ct 

 al., Manual, 1st ed., 1923, 150.) From 

 Latin, rust-colored. 



Rods: 0.5 to 0.8 by 1.5 to 2.0 microns, 

 occurring singly. Motile, possessing 

 peritrichous flagella. Gram-negative. 



Gelatin colonies: Brown, the pigment 

 dift'using into the medium. 



Gelatin stab: Xo liquefaction. 



Agar slant: Rusty-brown streak. 



Broth: Turbid. 



Litmus milk: Dark-yellow ring; alka- 

 line. 



Potato: Rusty-brown streak. 



Indole not formed. 



Xitrites not produced from nitrates. 



Ammonia not produced. 



Aerobic, facultative. 



Optimum temperature 25°C. 



Habitat: Water. 



12. Cellulomonas albida (McBeth) Ber- 

 gey et al. {Bacillus albidus McBeth, 

 Soil Science, 1, 1916, 445; Bergey et al., 

 Manual, 1st ed., 1923, 160.) From Latin 

 albidus, white. 



Rods-. 0.4 by 1 .0 micron. Motile with 

 one to three peritrichous flagella. 

 Gram-negative. 



Gelatin stab : Scant growth . Xo lique- 

 faction. 



Agar colonies: Circular, convex, soft, 

 grayish -white, granular, entire. 



Agar slant: Scant, white streak. 



Ammonia cellulose agar : After 30 days 

 the colonies show an enzymatic zone of 

 1 to 2 mm. 



Broth: Clear. 



Filter paper broth: In" 15 days, the 

 paper is reduced to a thin, filmy, grayish- 

 white mass which readilj' breaks up. 



Litmus milk: Slightly acid, not di- 

 gested. 



Potato: Xo growth. 



Indole not formed. 



Xitrites not produced from nitrates. 



Ammonia not produced. 



Acid from glucose, maltose, lactose, 

 sucrose, starch, glycerol and mannitol. 



Aerobic, facultative. 



Optimum temperature 20°C. 



Source: Soil from California. 



Habitat: Soil. 



13. Cellulomonas alma (McBeth) Ber- 

 gey et al. {Bacillus almics McBeth, 

 Soil Science, 1, 1916, 446; Bergey et al., 



