THE EXAMINATION OF PLATE CULTURES 35 



Amoeboid: very irregular, streaming. 



Mycelioid ' : a filamentous colony with the radiate character 



of a mold. 



Filamentous : an irregular mass of loosely woven filaments. 

 Floccose : of a densely woolly structure. 

 Rhizoid : of an irregular branched, rootlike character, as 



in Bact. mycoides. 

 Conglomerate : an aggregate of colonies of similar size and 



form. 

 Toruloid ' : an aggregate of colonies like the budding of the 



yeast plant. 

 Rosulate : shaped like a rosette. 



Detailed character of surface. 



Smooth : surface even, without any of the following dis- 

 tinctive characters. 



Alveolate : marked by depressions separated by thin walls, 

 so as to resemble a honeycomb. 



Punctate : dotted with punctures like pin pricks. 



Bullate : like a blistered surface, rising in convex promi- 

 nences, rather coarse. 



Vesicular: more or less covered with minute vesicles, due to 

 gas formation ; more minute than bullate. 



Verrucose : wartlike, bearing wartlike prominences. 



Squamose : scaly, covered with scales. 



Echinate : beset with pointed prominences. 



Papillate : beset with nipple- or mamma-like processes. 



Rugose: short, irregular folds, due to shrinkage of surface 

 growth. 



Corrugated ' : in long folds, due to shrinkage. 



Contoured ': an irregular but smoothly undulating surface, 

 like the surface of a relief map. 



Rimose : abounding in chinks, clefts, or cracks. 



Internal structure of colony (microscopic). 



Amorphous : without definite structure as below specified. 

 Hyaline : clear and colorless. 



Homogeneous : structure uniform throughout all parts of the 

 colony. 



