PARASITIC RHIZOCTONIAS IN AMERICA 383 



On Agar XII. Growth fair. Mycelium flat, somewhat dense, flaky and 

 white at center ; edge loose. Two distinct zones. 



"COTTON II" 



On Green-Bean Agar. Growth fair. Mycelium loose, tufted, and fairly dense 

 later turning brown. Two zones present. 



On Oat Agar. Growth fair. Mycelium white, fine, loose, and flat, forming a 

 mat over surface of the medium. One zone present. 



On Potato-Glucose Agar. Growth fair. Mycelium loose, flat, and fairly dense; 

 edge irregular. Later both mycelium and medium turned brown. Two zones 

 present. 



On Agar XII. Growth fair. Mycelium white, loose, and somewhat tufted. 

 Three zones present. 



"DlANTHUS BARBATUS N.P. ' ' 



On Green-Bean Agar. Growth fair. Mycelium tufted and compact. Zonation 

 indistinct. 



"DlANTHUS BARBATUS S.M. " 



On Green-Bean Agar. Growth good. Mycelium tufted and compact. Zona- 

 tion rather indistinct. 



"DlANTHUS PLUMARIUS" 



On Green-Bean Agar. Growth good. Mycelium loose, white, and somewhat 

 tufted ; edge regular. Zonation characteristic of the carnation strains. 



"DlANTHUS SEQUERl" 



On Green-Bean Agar. Growth good. Mycelium loose, white, and somewnat 

 fluffy; edge regular. Zonation characteristic of carnation strains in all respects. 



' ' EGGPLANT I ' ' 



On Corn-Meal Agar. Growth poor. Mycelium white, fine, and mostly sub- 

 merged. No zonation. 



On Green-Bean Agar. Growth good. Mycelium white, flat, radial, compact, 

 and dense. One zone at center. 



On Oat Agar. Growth fair. Mycelium white, loose, flat, interwoven, and 

 somewhat tufted. Zonation. 



On Potato Agar. Growth good. Mycelium dark, compact, dense, and radial. 

 No zonation. 



On Potato-Glucose Agar. Growth fair. Mycelium in radial strands, flat, and 

 white. No zonation. 



On Agar XII. Growth fair. Mycelium white, flat, dense, and compact. 

 One zone present. 



' ' GYPSOPHILA ' ' 



On Green-Bean Agar. Growth fair. Mycelium white, fluffy, and somewhat 

 compact. Zonation very characteristic of strains from carnation. 



' ' LAVATERA ' ' 



On Green-Bean Agar. Growth good. Mycelium white, loose, and tufted; edge 

 even. Several zones present. 



