266 METHODS OF IDENTIFICATION AND STUDY 



appearance, and particles in clustered grains (Fig. 



Moruloid: Having the character of a mulberry, seg- 

 mented, by which the colony is divided in more or 

 less regular segments (Fig. 145, b). 



Clouded: Having a pale ground, with ill-defined 

 patches of a deeper tint (Fig. 145, c). 



a b c 



FIG. 146. Types of colonies: a, Reticulate; b, gyrose; c, marmorated. 



3. Colony Marking or Striping: 



Reticulate: In the form of a network, like the veins 

 of a leaf (Fig. 146, a). 



Areolate: Divided into rather irregular, or angular, 

 spaces by more or less definite boundaries. 



Gyrose: Marked by wavy lines, 

 indefinitely placed (Fig. 146, b). 



Marmorated: Showing faint, ir- 

 regular stripes, or traversed by 

 vein-like markings, as in marble 

 (Fig. 146, c). 



Rivulose: Marked by lines like 

 the rivers of a map. 



Rimose : Showing chinks, cracks, 

 or clefts. 



4. Filamentous Colonies: 

 Filamentous : As already defined. 



Floccose : Composed of filaments, densely placed. 



FIG. 147. Types of 

 colonies curled. 



