160 C. D. Sherbakoff 



On the same medium as above, culture twenty days old ; conidia from a 



small sporodochium : 



Conidia: 3-septate, 1 per cent 



4-septate, 12 per cent, 44 x 4 (40-57 x 3.5-4.4) m 

 5-septate, 87 per cent, 54 x 3.9 (40-68 x 3.5-4.2) m 



On potato tuber plug, culture twenty-four days old; conidia from aerial 



mycelium : 



Conidia: 3-septate, 10 per cent, 46 x 3.4/x (only a few measured) 

 4-septate, 30 per cent, 47 x 3.5 (44-50 x 3-3.8) M 

 5-septate, 60 per cent, 51 x 3.7 (48-57 x 3.4-4.2)^ 

 6-septate, rare, 60 x 4.2m (only one measured) 



On potato stem plug, culture one hundred and seven days old; conidia 

 from a sporodochial mass (much deterioated) : 

 Conidia: 3-septate, 15 per cent 



4-septate, 5 per cent 



5-septate, 80 per cent, 56 x 3.8 (50-63 x 3.5-4.2)/z 



On steamed whole potato tuDer, culture forty-nine clays old; conidia 

 from a white, semi-dry, sporodochial mass: 

 Conidia: 3-septate, 50 per cent, 36 x 3.9 (24-43 x 3.5^.1)m 



4-septate, 35 per cent 



5-septate, 15 per cent, 43 x 4.1 (39^6 x 3.9-4.4) M 



On same medium as above; conidia from a red (old?) sporodochial 



mass, nearly converging into semi-pionnotal layer: 



Conidia: 0-septate, very rare 



3-septate, 8 per cent, 46 x 3.7 (24-50 x 3-4) /z 

 4-septate, 12 per cent, 48 x 3.8 (41-52 x 3.5-4.1)/* 

 5-septate, 80 per cent, 54 x 4 (43-62 x 3.5-4.3) M 

 6-septate, very rare, about 57 x 4.2/x (only a few measured) 



On medium soft potato agar, culture fourteen days old; conidia from 

 pseudopionnotes: 

 Conidia: 3-septate, 28 per cent, 42 x 3.6/x (only four measured) 



4-septate, 10 per cent 



5-septate, 62 per cent, 58 x 4 (43-65 x 3.5-4.7) p 



