230 Q. D. Sherbakoff 



extensively studied by Wilcox, Link, and Pool (1913). The identity of 



F. tuberivorum and F. trichothecioides Wr. is discussed by Wollenweber 



(1913 c : 206). In the writer's opinion there is no doubt that this is correct. 



The few measurements of the conidia on different media are as follows: 



On slightly acidified hard potato agar, culture fifteen days old: 

 Conidia: 0-septate, 23 per cent, 8.2 x 3.8 (5-15 x 3-4.7) /* 



1-septate, 59 per cent, 19 x 4.2 (12-26 x 3.5-4.7)// 

 2-septate, 8 per cent, 22.4 x 4.3 (16-35 x 4.3-5.2)/* 

 3-septate, 10 per cent, 28.1 x 5 (20-39 x 4.3-5.3)/* 

 4- and 5-septate, few, 40-45 x 5/* 



On red raspberry cane plug, culture seventy-three days old: 

 Conidia: 0-septate, 39 per cent, 12 x 4.2 (7-14 x 3-4.8) /* 



1-septate, 50 per cent, 14 x 4.3 (14-20 x 3.9-4.8)/* 

 2-septate, 11 per cent, 22 x 4.5 (19-32 x 4.1-5.2)/* 



On potato tuber plug, culture five days old, kept at a low (from 3° to 



7° C.) temperature: 



Conidia: 0-septate, 6 per cent, 14x5.2 (10-17 x 4.8-5.5)/* 

 1-septate, 53 per cent, 16 x 5.4 (12-23 x 4.4-7) /* 

 2-septate, 15 per cent 



3-septate, 19 per cent, 26x5.8 (19-42 x -5.2-7) m 

 4-septate, 6 per cent, 35 x 6.2 (33-40 x 5.4-7)/* 

 5-septate, 1 per cent, 38 x 6.3 (31-52 x 5.4-7)/* 

 6-septate, exceptional, 41x6.3 (39-47x6-7)/* (only three 

 measured) 



Average of the above measurements: 

 Conidia: 0-septate, 23 per cent, 11 x 4.4/* 

 1-septate, 54 per cent, 16 x 4.6/* 

 2-septate, 11 per cent, 21 x 4.8/* 

 3-septate, 10 per cent, 27 x 5.4/* 

 4-septate, 2 per cent 

 5-septate, rare, 38 x 6.3/* 

 6-septate, very rare 



45. Fusarium subpallidum n. sp. (Fig. 39; PI. v, fig. 12) 

 Conidia sickle-shaped, typically abruptly constricted at apex, slightly 

 pedicellate to papillate, somewhat broader in the middle, mostly 5-septate, 



