FAMILY III. ACimOMOBACTERACEAE 



316 



1895, 442; Bergey et al., Manual, 1st ed., 

 1923, 115.) 



dor.mi.ta'tor. L. noun dunnitator a 

 sleeper, a sluggard. 



Original description supplemented by 

 material taken from Harrison (Canadian 

 Jour, of Research, 1, 1929, 233), whose cul- 

 tures differed in some particulars from 

 Wright's. 



Rods with conical ends, occurring singly, 

 in pairs and in chains. Non-motile. Gram- 

 negative (Harrison). 



Gelatin colonies: Small, yellow, slightly 

 granular. Liquefaction. 



Gelatin stab: Infundibuliform liquefac- 

 tion; yellow sediment. 



Agar slant: Yellow, glistening, translu- 

 cent growth. 



Ammonium phosphate agar: Slight, yel- 

 low growth. 



Broth: Turbid with slight pellicle and 

 yellow sediment. 



Litmus milk: Slightly acid; litmus re- 

 duced. Harrison reports no reduction. 



Potato: Slight, transparent, yellow 

 growth. 



Indole not produced (Harrison) . 



Acid from glucose, sucrose, glycerol and 

 mannitol. Xo acid from lactose, rafRnose or 

 inulin (Harrison). 



Nitrites produced from nitrates in trace 

 amounts (Harrison). 



Aerobic, facultatively anaerobic. 



Optimum temperature, 30° C. 



Source: Originally isolated from fresh 

 water at Philadelphia. Later isolated by 

 Harrison {loc. cit.) from the skin of halibut 

 taken from the Pacific Ocean off Canada. 

 Gibbons (Contrib. to Canadian Biol, and 

 Fish., 8, 1934, 279) reports this species as 

 occurring in the slime of a haddock {Mel- 

 anogrammus aeglefinus) . 



Habitat: Found in fresh and salt water. 



9. Flavobacteriuin peregriniim Stapp 

 and Spicher, 1954. (Zent. f. Bakt., II Abt., 

 108, 1954, 113.) 



per.e.gri'num. L. adj. peregrimis strange, 

 foreign. 



Straight rods, 0.5 to 0.8 by 2.4 microns, 

 occurring singly and in pairs. Non-motile. 

 Gram-negative. 



Gelatin colonies: Circular, entire, j^ellow; 

 radial grooves. 



Gelatin stab: Yellow surface growth; no 

 growth in the stab. No liquefaction. 



Nutrient agar colonies: Mucoid, yellow, 

 shiny; hyaline margins. 



Glucose agar: Slowly developing yellow 

 growth. 



Nutrient broth: Turbid with a white 

 sediment. 



Litmus milk: Unchanged. 



Potato: Yellow streak. 



Indole not produced. 



No acid or gas from glucose, sucrose, 

 lactose, glycerol or mannitol in nutrient 

 broth. 



Starch not hydrolj-zed. 



Nitrites not produced from nitrates. 



Slow development in a mineral, glucose 

 agar. 



Aerobic. 



Distinctive characters: Resembles Flavo- 

 baclerium breve Bergey et al. culturally. 

 The herbicide 2,4-dichlorophenoxyacetic 

 acid is utilized as a sole source of carbon in 

 an otherwise inorganic medium. Destroys 

 2,4-D in the soil, presumably by opening the 

 benzene ring. 



Source: Isolated in Germany from soil- 

 enrichment cultures containing 2,4-D. 



Habitat: Found in soil. 



10. Flavobacteriuni breve (Lustig, 1890) 

 Bergey et al., 1923. (Der kurze Canalbacil- 

 lus, Mori, Ztschr. f. Hyg., 4, 1888, 53; 

 Bacillus canalis parvus Eisenberg, Bakt. 

 Diag., 1891, 362; Bacillus brevis Lustig, 

 Diagnostica dei batteri delle acque, Torino, 

 1890, 52; Bacterium canale Mez, Mikro- 

 skopische Wasseranalyse, Berlin, 1898, 55; 

 Flavobacteriuni brevis (sic) Bergey et al., 

 Manual, 1st ed., 1923, 116.) 



bre've. L. adj. brevis short. 



Rods, 0.8 to 1.0 by 2.5 microns, showing 

 polar staining. Non-motile. Gram-negative. 



Gelatin colonies: Minute, pale yellow, 

 compact growth in 2 to 3 weeks. 



Gelatin stab: Thin, j-ellowish growth on 

 the surface in 3 weeks. Beaded growth in 

 stab. No liquefaction. 



Agar slant: Yellowish growth in 2 to 3 

 days. 



