202 ORDER I. PSEUDOMONADALES 



attacked: Sarcosiu, betain, hippuric acid, Catalase produced, 



asparagine, propionamid, capronamid, lac- Aerobic, facultative, 



tainid, succinamid, allantoin and uric acid. Optimum temperature, 30° C. 



Glucose fermented. Habitat: Soil and v/ater. 



Genus IX. Alginomonas Thj^tta and Kdss, 1945.* 



(Thj0tta and K&ss, Norske Videnskaps-Akad., Oslo, I Mat.- Naturv. Klasse, No. 5, 1945, 

 17; also see lass. Lid and MoUand, ibid., No. 11, 1945, 8.) 



Al. gi.no. mo 'nas. L. fem.n. alga seaweed; M.L. adj. alginicus pertaining to alginic acid 

 from seaweed; Gr. noun nionas a unit, monad; M.L. fem.n. Alginomonas alginic-acid (-de- 

 composing) monad. 



Coccoid rods which are motile with one to four polar fiagella. Gram-negative. Fluorescent. 

 Gelatin is usually liquefied. Carbohydrates are not utilized. Citric acid is not used as a sole 

 source of carbon. Alginic acid is decomposed. Found on algae and in sea water and soil. 



As the type of flagellation has not been determined for all of the species here included in 

 the genus, it may be found later that some of these species do not belong in Alginomonas 

 as here defined. 



The type species is Alginomonas nonjermentans K&ss et al. 



Key to the species of genus Alginomonas. 



I. Gelatin is liquefied. 



A. Grow on potato. 



1. Gray to grayish brown growth on potato. 



1. Alginomonas nonjermentans. 



2. Pinkish or ivory-colored growth on potato. 



a. Pink growth on potato. 



2. Alginomonas terrestralginica. 

 aa. Ivory-colored growth on potato. 



3. Alginomonas alginovora. 



B. No growth on potato. 



4. Alginomonas fucicola. 

 II. Gelatin not liquefied in seven days. 



5. Alginomonas alginica. 



1. Alginomonas nonfermentans K&ss Potato: Abundant, grayish brown 



et al., 1945. (K&ss, Lid and Molland, Norske growth. 



Videnskaps-Akad., Oslo, 1 Mat. -Naturv. Indole not produced. 



Klasse, No. 11, 1945, 9.) Hydrogen sulfide is produced. 



non.fer.men'tans. L. prefix non- not, Alginic acid is decomposed without the 



non-; L. y. fermento to ferment; M.L. part. production of acid or gas. 



adj. nonjermentans non-fermenting. Carbohydrates are not utilized. 



Small, coccoid rods. Motile with one to (.^^^.j^ ^^j^ ^^^^^^ ^e used as a sole source 



four polar fiagella. Gram-negative. , oarbon 



Good growth on ordinary media. ^t-, .. i i j- -^ j. 



^ . ^. -r ■ r ^- Nitrites produced from nitrates. 

 Gelatin: Liquefaction. 



Agar colonies: Smooth, fluorescent. Aerobic. 



Broth: Turbid; sediment; no pellicle. Grows at 37° C. 



Litmus milk: Coagulated; peptonized; Chemical tolerance: No growth at pH 

 reduced. 9.6. 



♦Prepared by Prof. Th. Thj0tta, Microbiological Institute, University of Oslo, Oslo, 

 Norway, January, 1955. 



