GENERAL SYSTEMATIC BACTERIOLOGY 303 



Erwinia. A generic name proposed by Winslow et al. (Committee 

 Soc. Am, Baet., 1917, p. 560) with the following description: "Plant 

 pathogens. Growth usuall}^ whitish, often slimy. Indol generally, 

 not produced. Acid usually formed in certain carbohydrate media, 

 but as a rule no gas." 



Later (1920, p. 209) it was included as the single genus of the tribe 

 Erwineae, and the type species designated as Erwinia amyiovora 

 (Burrill) Committee. 



Bergey et al. (1923, p. 168) follow the committee in placing the genus 

 in the tribe " Erwiniae" with the following description: "Motile rods, 

 possessing peritrichous flagella. The rods are white and few species 

 form pigment." 



Erwiniae. A variant spelling of Erwinieae or Erwineae q.v. used 

 by Bergey et al. (1923, p. 168). It is included as the fourth tribe of the 

 family Bacteriaceae with the following description: 



Plant pathogens. Growth usually whitish, often slimy. Indol generally not 

 produced. Acids usually formed in carbohydrate media, forming acid or acid 

 and gas. Motile, or non-motile. Gram-negative. 



Erysipelcoccus. A casual designation apparently first used by 

 Bender (1888, p. 10) for Erysipelkokken of Fehleisen. Enlows states: 



This name has been ascribed by numerous authors to Fehleisen. In Sitz. d. 

 Phys.-Med. Gesellsch. z. Wurz., 1881-1885, p. 126 (1881) and p. 9 (1883), he 

 described a micrococcus "der Mikrokokkus des Erysipels." In his second paper 

 he uses in the title of the paper the word "Erysipelkokken," but in the text 

 he uses "mikrokokken." 



Erysipelococcus. Enlows (1920, p. 41) states this is found in Lipp. 

 Med. Diet. Phil., 1920, p. 322., syn. Streptococcus erydpelatis. 



Erysipelothrix. A generic name proposed by Rosenbach (1909, p. 

 367) to include the causal organisms of swine erysipelas, human erysi- 

 peloid and mouse sepsis. As characters differentiating this genus from 

 Bacillus are noted the formation of long filaments and the regular 

 development of branches, the thickening of the filaments with the 

 characteristic granules. The species named are Erysipelothrix porci, 

 E. erysipeloides and E. murisepticus. 



Buchanan (1918, p. 55) included this as the ninth genus of the family 

 Bacteriaceae with the following description: 



Rod-shaped organisms with a tendency to the formation of long filaments 

 which may show branching. The filaments may also thicken and show charac- 



