PLATE 2 
A. —Plant attacked by Ophiobolus cm the left, healthy plant cm the right, all 
obtained on the Pool farm and photographed at the same time as Plate i. 
B. —Photomicrograph of a cluster of asci of Ophiobolus carketi from Chaetochloa 
geniculala. The diseased host was discovered cm the campus of the University of 
Arkansas. Magnified about 250 times. 
