FAMILY PSEUDOMOXADACEAE 



179 



1891, 61 ; Migula, Syst. d. Bakt., 2, 1900, 

 936.) Isolated from water. 



Pseudomonas graveolans Migula . ( Ba- 

 cillus aquatilis graveolens Tataroff, Die 

 Dorpater Wasserbakterien, Inaug. Diss., 

 Dorpat, 1891, 48; Migula, Syst. d. Bakt., 

 2, 1900, 934.) Isolated from water. 

 Not Pseudomonas graveolens Levine and 

 Anderson (Jour. Bact., 23, 1932, 343) 

 isolated from musty eggs, and by Olsen 



and Hammer (Iowa State Coll. Jour. Sci., 

 9, 1934, 125) from milk. 



Pseudomonas resinacea Migula. 

 (Harzfarbener Bacillus, Tataroff, Die 

 Dorpater Wasserbakterien, Inaug. Diss., 

 Dorpat, 1891, 64; Migula, Syst. d. Bakt., 

 2, 1900, 935.) Isolated from water. 



Xanthomonas taraxaci Niederhauser. 

 (Phytopath., 53, 1943, 961.) Patho- 

 genic on Russian dandelion (Taraxacum 

 kok-saghz) . 



Genus III. Methanomonas Orla-Jensen.* 

 (Cent, f . Bakt., II Abt., 22, 1909, 311.) 

 Cells monotrichous, capable of obtaining energy from oxidation of methane to CO2 

 and water. 

 The type species is Methanomonas methanica (Sohngen) Orla-Jensen. 



1. Methanomonas methanica (Sohn- 

 gen) Orla-Jensen. (Bacillus niethanicus 

 Sohngen, Cent. f. Bakt., II Abt., 15, 

 1906, 513; Orla-Jensen, Cent. f. Bakt., 

 II Abt., 22, 1909, 311.) From methane. 



Short rods: 0.5 to 0.8 by 2.0 to 3.0 mi- 

 crons, motile in young cultures by means 

 of a single flagellum. In older cultures 

 nearly spherical. Can be cultivated in 

 an atmosphere composed of one part CH4 

 and two parts air on washed agar contain- 

 ing the necessarj^ inorganic salts. The 

 growth is membranous. 



At the end of two weeks, the organisms 

 changed an atmosphere containing 225 

 ml. CH4 and 321 ml. O. to the follow- 



Clli ml. , 



CO2 78 ml. 



O2 172 ml. 



In addition, 21 ml. CO2 was dissolved 

 in the liquid. 



Habitat : Presumably widely distrib- 

 uted in soil. 



Genus IV. Acetobacter Beijerinck.j 

 (Proc. Kon. Akad. v. Wetenschapp., Amsterdam, 2, 1900, 495.) 



Acetobacter aceti first appeared (Krai's Sammlung v. Mikroorg., Prague, 1898, 4) 

 as a synonym of Bacterium aceti Hansen. Beijerinck (loc. cit.) mentions Acetobacter 

 aceti in a footnote of a later paper. The genus name Acetobacter was accepted by 

 Fuhrmann (Beiheft Bot. Centralbl., Orig., 19, 1905, 8) and others. From Latin, 

 acetum, vinegar; baclrum, rod. 



Synonyms: ?Ulvina Kiitzing, Algae aquae dulcis, etc., 11th decade, 1837; Myco- 

 derma Thompson, Ann. d. Chem. u. Pharmacie, 83, 1852, 89 ; ? Umbina Naegeli, Bericht 

 liber die Verhandlingen der bot. Section der 33 Versammlung deutscher Xatur- 

 forscher. und Arzter. Bot. Ztg., 1857, 760; Bacterium Lanzi, N. Giorn. bot. ital., 1876, 

 257; Torula Saccardo, Atti Soc. Ven. Trent., 5, 1878, 315; Bacteriopsis (in part)Trevi- 

 san, Atti Accad. Fisio-Medico-Statistica Milano, Ser. 4, 3, 1885, 103; Micrococcus 

 Maggi, Jour. Microg., 10, ISSQ; Bacillus Schroeter, Kryptogamen Flora von Schlesien, 

 3, 1, 1886, 161; Termobacterium Zeidler, Cent. f. Bakt., II Abt., 2, 1896, 739; Acetobac- 



* Prepared by Prof. D. H. Bergey, Philadelphia, Pennsylvania, December, 1922. 



t Revised by Dr. C. D. Kelly, McGill Univ., Montreal, P. Q., Canada, July, 1938; 

 further revision by Dr. Reese H. Vaughn, Univ. of California, Berkeley, California 

 June, 1943. 



