22 LABORATORY BACTERIOLOGY 



2. Gelatin stab cultures. Nonliquefying line of puncture. 



Filiform : uniform growth, without special character. 

 Nodose : consisting of closely aggregated colonies. 

 Beaded ' : consisting of loosely placed or disjointed colonies. 

 Papillate : beset with papillate extensions. 

 Echinate : beset with acicular extensions. 

 Villous : beset with short, undivided, hairlike extensions. 

 Plumose : a delicate feathery growth. 



Arborescent: branched, or treelike, beset with branched 

 hairlike extensions. 



3. Gelatin stab culture. Liquefying line of puncture. 



Crateriform : a saucer-shaped liquefaction of the gelatin. 



Saccate : shape of an elongated sack, tubular, cylindrical. 



Infundibuliform : shape of a funnel, conical. 



Napiform : shape of a turnip. 



Fusiform : outline of a parsnip, narrow at either end, broad- 

 est below the surface. 



Stratiform : liquefaction extending to the walls of the tube 

 and downward horizontally, 



