616 MANUAL OF DETERMINATIVE BACTERIOLOGY 



Genus A. Cellulomonas Bergey el al. 

 (Manual, 1st ed., 1923, 154.) 



Small rods, with rounded ends, non-spore-forming, motile with peritrichous fla- 

 gella, occurring in soil and having the property of digesting cellulose. Growth on 

 ordinary culture media often not vigorous. Gram-negative. 



The type species is Cellulomonas biazotea (Kellerman) Bergey et al. 



Key to the species of genus Cellulomonas. 



I. Motile with peritrichous flagella. 



A. Gelatin liquefied. Chromogenic. 



1. Milk acid. 



a. Ammonia not produced; indole not formed. 



1. Cellulomonas biazotea. 



2. Milk acid; digested. 



a. Ammonia produced; indole not formed. 



2. Cellulomonas aurogenes. 

 aa. Ammonia produced; indole formed. 



3. Cellulomonas galba. 



3. Milk alkaline. 



a. Ammonia produced; indole not formed. 



4. Cellulomonas folia. 



4. Litmus milk unchanged. 



a. Ammonia produced; indole not formed. 



5. Cellulomonas flava. 



B. Gelatin liquefied. Non-chromogenic. 



1. Milk acid. 



a. Ammonia not produced; indole not formed. 



6. Cellulomonas cellasea. 

 aa. Ammonia produced; indole not formed. 



7. Cellulomonas iiigis. 

 aaa. Ammonia not produced; indole formed. 



S. Cellulomonas concitala. 



2. Milk acid; digested. 



a. Ammonia produced; indole not formed. 



9. Cellulomonas caesia. 



C. Gelatin not liquefied. Chromogenic. 



1. Milk acid. 



a. Ammonia produced; indole formed. 



10. Cellulomonas gilva. 



2. Milk alkaline. 



a. Ammonia not produced; indole not formed. 



11. Cellulomonas ferruginea. 



D. Gelatin not liquefied. Non-chromogenic. 

 1. Milk acid; not digested. 



a. Ammonia not produced; indole not formed. 



12. Cellulomonas albida. 



13. Cellulomonas alma. 

 aa. Ammonia not produced; indole formed. 



14. Cellulomonas desidiosa. 

 aaa. Ammonia produced; indole not formed. 



