232 C. D Sherbakoff 



Hab. In tuberibus aridis et extra putridis Solani tuberosi. Fungus e 

 tuberibus Solani tuberosi putridis ab Edgerton in Louisiana, Amer. bor. 

 receptis, sejungebatur. 



Measurements of conidia on various media are as follows: 



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



from pseudopionnotes : 



Conidia: 0-septate, rare 

 1-septate, rare 

 2-septate, rare 



3-septate, 23 per cent, 24.4 x 5.2 (16-30"x 4.7-5.7) m 

 4-septate, 31 per cent, 25.6 x 5.5 (19-32 x 5.2-5.9)m 

 5-septate, 45 per cent, 28 x 5.7 (24-34 x 4.7-5.9) m 

 6- and 7-septate, 1 per cent, 31 x 6.1 (26-35 x 5.7-6.4)/z 



On red raspberry cane plug, culture fifty-nine days old; conidia from 

 aerial mycelium: 



Conidia: 3-septate, 40 per cent, 24 x 4.7 (20-28 x 4.3-5) m 

 4-septate, 18 per cent 



5-septate, 42 per cent, 28 x 5.2 (24-31 x 5-5.3) m (only four 

 measured) 



On hard potato agar, culture one hundred and seventy-five days old: 



(1) Conidia from a sporodochium 



Conidia: 3-septate, 4 per cent, 26 x 5.3 (23-28 x 5.2-5.4) n 

 4-septate, 1 per cent 

 5-septate, 95 per cent, 29 x 5.8 (26-33 x 5.2-6.1)m 



(2) Chlamydospores 



O-septate, in conidia, 8 x 7.5 (7-9 x 6-9) ju 



1-septate, in mycelium, 15.5 x 10.3 (10-18 x 8.7-13.2)ju, the 

 largest observed being 21 x 14;u 



On medium soft potato agar, culture fifty days old: 



(1) Conidia from thin pseudopionnotes 



Conidia: 3-septate, 28 per cent, 25 x 5.4 (26-29 x 4.8— 5.9) ix 

 4-septate, 23 per cent, about the size of 5-septate 

 5-septate, 49 per cent, 28 x 5.6 (24-32 x 5.2-6.3) M 



(2) Chlamydospores 



0- and 1-septate, in clusters and chains, 7-16ju in diameter 



