FAMILY PSEUDOMONADACEAE 



191 



Genns VI. Mycoplana Gray and Thornton * 



(Cent. f. Bakt., II Abt., 73, 192S, S2.) From Greek, mykes, fungus; plane, a wan- 

 derer or traveller. 



Cells branching, especially in 3'oung cultures. Frequently banded when stained. 

 Capable of using phenol and similar aromatic compounds as a sole source of energy. 

 Grow well on standard culture media. 



Type species Mycoplana dimorpha Graj^ and Thornton. 



Key to the species of genus Mycoplana. 



I. Gelatin not liquefied. 



1. Mycoplana dimorpha. 

 II. Gelatin liquefied. 



2. Mycoplana hxdlata. 



1. Mycoplana dimorpha Gray and 

 Thornton. (Cent. f. Bakt., II Abt., 

 73, 1928, 82.) From Greek, di, two; 

 morphos, forms. 



■ Short, curved and irregular rods, 0.5 

 to 0.7 by 1.25 to 4.5 microns, showing 

 branching especially in young cultures. 

 fMotile, with long polar flagella. Gram- 

 negative. 



Gelatin colonies : Circular, buft', smooth, 

 resinous, entire. 



Gelatin stab : Xo liquefaction. Growth 

 filiform. 



Agar colonies: Circular, buff, convex, 

 smooth, glistening, entire. 



Agar slant: Filiform, white, convex, 

 glistening, entire. 



Broth: Turbid, with surface ring. 



Nitrites not produced from nitrates 

 but gas evolved in fermentation tubes. 



Starch hydrolyzed. 



No acid from carbohydrate media. 



Attacks phenol. 



Aerobic. 



Optimum temperature below 30 °C. 



Source: One strain isolated from soil. 



Habitat: Probably in soil. 



2. Mycoplana bullata Gray and Thorn- 

 ton. (Cent. f. Bakt., II Abt., 73, 1928, 

 83.) From Latin, bullatus, furnished 

 with a boss or knob. 



Rods, curved and irregular, branching, 

 0.8 to 1.0 by 2.25 to 4.5 microns. fMotile 

 with polar flagella. Gram-negative. 



Gelatin colonies : Circular, buff, smooth, 

 glistening, edge diffuse. Partially lique- 

 fied. 



Gelatin stab: Saccate liquefaction. 



Agar colonies : Circular, white, convex, 

 smooth, glistening, entire. 



Agar slant: Filiform, white, convex, 

 smooth, glistening, entire. 



Broth: Turbid. 



Nitrites not produced from nitrates. 

 Gas, presumabl}^ N, in fermentation 

 tubes. 



Starch not hydrolyzed. 



No acid from carbohj'drate media. 



Attacks phenol. 



Aerobic. 



Optimum temperature below 30 °C. 



Source: Two strains isolated from soil. 



Habitat: Probably in soil. 



* Prepared by Prof. D. H. Bergey, Philadelphia, Pennsylvania, June, 1929. 



t The original statements regarding the flagellation of the.se species are contra- 

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

 Drawings given usually indicate peritrichous rather than polar flagellation. Further 

 study is needed before these species can be properly placed in relation to other known 

 species. — Editors. 



