FAMILY PSEUDOMONADACEAE 



105 



Attack phenol and cresol at times, also 

 naphthalene. 



Aerobic, facultative. 

 Optimum temperature 25°C. 

 Habitat: Manure and soil. 



45. Pseudomonas dacunhae Gray and 

 Thornton. (Gray and Thornton, Cent, 

 f. Bakt., II Abt., 73, 1928, 90; Achro- 

 mobacter dacv7ihae Bergey et al., Manual, 

 3rd ed., 1930, 217.) From M. L. from 

 the Island of d'Acunha. 



Rods: 0.5 to 0.8 by 1.5 to 3.0 microns. 

 Motile with one to six polar flagella. 

 Gram-negative. 



Gelatin colonies : Circular, whitish, 

 raised, smooth, glistening, undulate. 



Gelatin stab: Xo liquefaction. 



Agar colonies: Circular to amoeboid, 

 white, flat, glistening, opaque, entire. 



Agar slant: Filiform, pale buff, raised, 

 smooth, glistening, undulate. 



Broth: Turbid. 



Nitrites produced from nitrates. 



Starch not hydrolyzed. 



No acid from carbohydrate media. 



Attack phenol. 



Aerobic, facultative. 



Optimum temperature 25°C. 



Habitat : Soil . 



46. Pseudomonas arvilla Gray and 

 Thornton. (Gray and Thornton, Cent, 

 f. Bakt., II Abt., 73, 1928, 90; Achromo- 

 bacter arvillum Bergey et al., Manual, 

 3rd ed., 1930, 217.) From Latin, arvum, 

 an arable field; M. L. dim. a little field. 



Rods: 0.5 to 0.7 by 2.0 to 3.0 microns. 

 Motile with one to five polar flagella. 

 Gram-negative. 



Gelatin colonies: Circular, whitish, 

 convex, smooth, glistening, lobate. 



Gelatin stab: No liquefaction. 



Agar colonies: Circular or amoeboid, 

 white to buff, flat to convex, smooth, 

 glistening, opaque, entire. 



Agar slant : Filiform, whitish, concave, 

 smooth, ringed, entire. 



Broth : Turbid. 



Nitrites not produced from nitrates. 



Starch not hydrolyzed. 

 Acid from glucose. 

 Attacks naphthalene. 

 Aerobic, facultative. 

 Optimum temperature 25°C. 

 Habitat: Soil. 



47. Pseudomonas salopium Gray and 

 Thornton. (Gray and Thornton, Cent, 

 f. Bakt., II Abt., 73, 1928, 91; Achromo- 

 bacter salopium Bergey et al.. Manual, 

 3rd ed., 1930, 219.) From Latin, Salop, 

 Shropshire. 



Rods: 0.7 to 1.0 by 1.0 to 3.0 microns, 

 occurring singly and in pairs. Motile 

 with one to six polar flagella. Gram- 

 negative. 



Gelatin colonies: Circular, grayish- 

 buff, flat, rugose or ringed, translucent 

 border. 



Gelatin stab: No liquefaction. 



Agar colonies : Circular or amoeboid, 

 white to buff, flat to convex, smooth, 

 glistening, translucent border, entire. 



Agar slant: Filiform, whitish, raised, 

 smooth, glistening, lobate. 



Broth: Turbid with pellicle. 



Nitrites not produced from nitrates. 



Starch not hydrolyzed. 



Acid from glucose and sucrose. 



Attacks naphthalene. 



Aerobic, facultative. 



Optimum temperature 25°C. 



Habitat: Soil. 



48. Pseudomonas minuscula McBeth. 

 (McBeth, Soil Science, 1, 1916, 437; 

 Cellidomonas minuscula Bergey et al.. 

 Manual, 1st ed., 1923, 162.) From Latin 

 dim. rather small. 



Rods: 0.5 by 0.9 micron. Motile with 

 one to two polar flagella. Gram-negative. 



Gelatin stab : Moderate growth . Slight 

 napiform liquefaction. 



Agar colonies: Small, circular, slightly 

 convex, butyrous becoming brittle, gray- 

 ish-white, finely granular, entire. 



Agar slant: Moderate, flat, grayish- 

 white. 



Broth : Turbid. 



