FusARiA OF Potatoes 219 



On red raspberry cane plug, culture forty-five days old; conidia from 



a plectenchymic sporodochium : 



Conidia: 0-septate, 8 per cent, 15 x 3 (6-21 x 2.5-3.5)// 

 1-septate, 17 per cent, 18 x 3.7 (17-23 x 3.5-4)^ 

 2-septate, 15 per cent, 20 x 4 (17-23 x 3.5-4.4)^ 

 3-septate, 60 per cent, 28.3 x 4.3 (19-39 x 3.5-4.8)/* 

 4-septate, rare 



On slightly acidified hard potato agar, culture nineteen days old; conidia 

 from a small sporodochium : 



Conidia: 0-septate, rare 

 1-septate, rare 



2-septate, 2 per cent, 24 x 4.2 (20-27 x 3.5-4.7)// 

 3-septate, 98 per cent, 30.3 x 4.5 (21-37 x 4.1-4.8)/* 



On hard lima-bean agar with 2 per cent glucose, culture thirteen days 

 old; conidia from aerial mycelium: 



Conidia: 0-septate, 98 per cent, 7.5 x 2.6 (4.3-18 x 2.3-3.7) /x 

 1-septate, 2 per cent, 13.5 x 3.2 (10-18 x 2.4-3.5) /x 



On same medium as above, culture sixty-five days old; conidia from a 



sporodochium : 



Conidia: 0-septate, 8 per cent, 6.4 x 2.8 (4.4-11 x 2.3-4.1)/* 

 1-septate, 5 per cent, 22 x 3.8 (15-29 x 3^.3)/* 

 2-septate, 2 per cent, 24 x 4 (18-28 x 3.5-4.4)/* 

 3-septate, 85 per cent, 28 x 4.3 (24-35 x 3.7-4.8)/* 



On corn meal agar, culture one hundred and seventy-three days old: 

 Chlamydospores : 0-septate, in conidia, 7.9 x 7 (5-11.5 x 5-9)/* 



1-septate, in mycelium, 13.3 x 8.1 (11-18 x 7-9) /x 



On hard lima-bean agar, culture eight days old; conidia from aerial 

 mycelium : 

 Conidia: 0-septate, 55.5 per cent, 7.8 x 2.8 (5.2-13 x 2.1-3.9)/* 



1-septate, 4 per cent, 13.3 x 3.2 (12-15 x 3-3.6)/* 



2-septate, 0.5 per cent 



3-septate, 40 per cent, 30.8 x 4.1 (23-37' x 3.9-4.2)/* 



