PLATE A 

 1-4. — Fusarium nigrum, n. sp.: 



1. Culture 32 days old on steamed Irish potato plug. 



2. Culture 40 days old on string-bean agar. 



3. Culture 21 days old on steamed rice. 



4. Culture 31 days old on Irish potato agar, plus 10 per cent of glucose. Note the 

 nearly black color of the medium at the bottom of the tube, left-hand side. 



5-6. — F usarium. elegantum , n. sp.: 



5. Culture 25 days old on steamed rice. 



6. Culture 18 da^'s old on steamed-potato plug. 



7-8. — Fusarium lanceolatum , n. sp.: 



7 . Culture 2c days old on steamed-potato plug. 



8. Culture 18 days old on steamed rice. 



(100) 



