204 



ORDER I. PSEUDOMONADALES 



28, 1934, 213; K&ss, Lid and MoUand, Norske 

 Videnskaps-Akad., Oslo, I Mat.-Naturv. 

 Klasse, No. 11, 1945, 9.) 



fu.ci'co.la. L. mas.n./tiCMS a seaweed; M. 

 L. noun Fucus a genus of brown seaweeds; 

 L.v. colo to inhabit; M.L. noun fucicola the 

 Fucus dweller. 



Short rods, 0.6 to 1.0 by 1.0 to 1.5 microns, 

 with ends rounded to almost coccoid; 

 slightly curved. Actively motile with twirl- 

 ing motion. Gram-negative. 



Alginic acid plate : Colonies finely granu- 

 lar, entire; at first whitish, turning brown in 

 three to five days, and later almost black, 

 producing a deep brown, soluble pigment. 



Alginic acid liquid medium: Limited 

 growth on surface in the form of a pellicle. 

 Frequently produces no growth at all. 



Sea-water gelatin: Active liquefaction; 

 no growth on stab; thin, fluorescent growth 

 throughout liquefied zone. 



Agar liquefaction: Positive, although lim- 

 ited; only softening of agar. 



Sea-water glucose broth: Faint turbidity; 

 no pellicle; no sediment. 



Litmus milk containing salt: No apparent 

 growth. 



Potato moistened with sea water: No 

 growth. 



Starch plate: No growth. 



Aerobic. 



Optimum temperature, 20° C. 



Source : Isolated from sea water near the 

 surface of the sand bottom. 



Habitat: Rare in sea water. 



5. Alginomonas alginica (Waksman et 



al., 1934) Kiss et al., 1945. {Bacterium algini- 

 cum Waksman, Carey and Allen, Jour. 

 Bact., 28, 1934, 213; K&ss, Lid and Molland, 

 Norske Videnskaps-Akad., Oslo, I Mat.- 

 Naturv. Klasse, No. 11, 1945, 9.) 



al.gi'ni.ca. L. fem.n. alga seaweed; M.L. 

 adj . alginicus pertaining to alginic acid from 

 seaweed. 



Rods short to almost spherical, 0.6 to 1.0 

 micron in diameter. Encapsulated. Slug- 

 gishly motile. Gram-negative. 



Alginic acid plate: White, finely granu- 

 lated colonies with entire margin. Does not 

 clear up the turbidity in plate. Odor pro- 

 duced resembles that of old potatoes. 



Alginic acid liquid medium: Thin pellicle; 

 weak alginase formation. 



Sea-water gelatin: Thin growth through- 

 out gelatin stab; no liquefaction in 7 days 

 at 18° C. 



Agar liquefaction: None. 



Sea-water glucose broth: Uniform but 

 very limited turbidity; no pellicle; no sedi- 

 ment. 



Litmus milk containing salt : No apparent 

 growth. 



Potato moistened with sea water: Moist, 

 spreading, cream-colored growth; heavy 

 sediment in free liquid at bottom. 



Starch plate: Limited, pale blue growth; 

 no diastase. 



Aerobic. 



Optimum temperature, 20° C. 



Source: Isolated from sea water and from 

 the surface of algal growth. 



Habitat: Common in sea water. 



Genus X. Mycoplana Gray and Thornton, 1928.* 

 (Cent. f. Bakt., II Abt., 73, 1928, 82.) 



My.co.pla'na. Gr. tnyces fungus; Gr. planus a wandering; M.L. fem.n. Mycoplana fungus 

 wanderer. 



Cells branching, especially in young cultures. Frequently banded when stained. Polar 

 flagellate. t Capable of using phenol or similar aromatic compounds as a sole source of 

 energy. Grow well on standard culture media. From soil. 



The type species is Mycoplana diniorpha Gray and Tho rnton. 



* Prepared by Prof. Robert S. Breed, Cornell University, Geneva, New York, January, 



1954. 



t The orginal statements regarding the flagellation of these species are contradictory. 

 The first reads "Polar, peritrichous"; the second "Polar or peritrichous".— Editors. 



