212 CD. Sherbakoff 



On potato tuber plug, culture ninety-nine days old: 



(1) Conidia from a sporodochium 



Conidia: 0-septate, 5 per cent, 6.2 x 2.4 (4.5-8 x 2-2 9)/Lt 



1-septate, 1 per cent, 13 x 2.1 ji (only a few measured) 

 2-septate, rare, 20 x 3.3;U (only a few measured) 

 B^eptate, 92 per cent, 32 x 3.8 (20-38 x 3^.2) ^ 

 4-septate, rare, 37 x 4.1/x (only one measured) 

 5-septate, very rare, about the size of 4-septate 



(2) Chlamydospores, numerous, mostly in conidia 



0-septate, 6.8 x 5.1 (5.2-7.2 x 4.6-5.3)^ 



1-septate, 9.6 x 5.1 (7.8-12.3 x 4.1-6)^, the largest 8.8 x 6.1^ 



On potato stem plug, cultm'e one hundred and twelve days old: 



(1) Conidia from a sporodochium 

 Conidia: 0-septate, 1 per cent 



1-septate, rare 



3-«eptate, 79 per cent, 36.4 x 4.1 (33-39 x 3.9-4.7)/* 

 4-septate, 13 per cent, 40 x 4.2 (36-42 x 3.9^.4) ^ 

 5-septate, 7 per cent, 40 x 4.3 (35-45 x 4— 1.7)ju 

 6-septate, very rare, same size as 5-septate 



(2) Chlamj^dospores, in conidia common, mostly 0-septate, 6.3 x 5.2 



(5.1-8 X 4.3-6) M 



On whole steamed potato tuber, culture forty-nine days old; conidia 



from a sporodochium: 



Conidia: 0-septate, 4 per cent 



3-septate, 86 per cent, 36 x 3.7 (22-44 x 2.9-4. 1)m 

 4-septate, 8 per cent, 38 x 4.1 (35^3 x 3.9-1.2) /i 

 5-septate, 2 per cent, 40 x 4.1 (37-44 x 4.1)/^ 



On rye grain, culture sixty-three daj^s old; conidia from a small sporo- 



dochimn : 



Conidia: 0-septate, 35 per cent 

 1-septate, 12 per cent 

 2-septate, 1 per cent 



3-septate, 45 per cent, 34 x 4 (24-44 x 2>.b-AA)yL 

 4-septate, 5 per cent, 41 x 4.2 (36^7 x 4^.7) /z 

 5-septate, 2 per cent, 45 x 4.3 (44-51 x 4— 4.7)ju 



