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C. D. Sherbakoff 



calary, always present; aerial mycelium typically present, short, fine, 

 medimn loose; colony faintly zonate; substratum on potato agar rich in 

 glucose, from pale flesh to cinnamon in color. 



Hab. On stems and tubers of Solanum tuberosum in Germany, rare. 



The organism was not isolated by the writer, but a culture of it was 

 carefully examined on several different media with the following results 

 in regard to spore septation and size: 



On slightly acidified hard potato agar, culture twenty-four days old: 

 Conidia: 3-septate, 5 per cent 



4-septate, 15 per cent, 32-4. 1/i 



5-septate, 80 per cent, 43.2 x 4.6 (38-50 x 4.3-4.9) /i 



Fig. 6. — Fxisarium gibbosum. a, Psetidopionnotal conidia from 10-days-old culture on 

 hard lima-bean aga,r; b, intercalary chlamydospores, c, conidia, from 71-days-old culture on 

 red raspberry cane plug; d, pseudopionnotal conidia from 118-days-old culture on hard lima- 

 bcan agar with 2 per cent glucose; e, conidia from 4^-days-old culture on potato stem plug; 

 F, pseudopionnotal conidia from 24-days-old culture on slightly acidified hard potato agar 



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

 Conidia : 3-septate, 5 per cent . 

 4-septate, 5 per cent 



5-septate, 90 per cent, 40 x 4.6 (33^6 x 4.2-5.2) 

 6-septate, rare 



On hard lima-bean agar with 2 per cent glucose, culture one hundred 

 and eighteen days old: 

 Conidia: 4-septate, 1 per cent 



5-septate, 94 per cent, 37 x 4.6 (26-44 x 3.9-4.9)^ 



6-septate, 3 per cent, 42 x 4.7/i 



7-septate, 2 per cent 



M 



