PLATE XXXVII 
Longitudinal sections through the growing points of two of the buds indicated in 
text figure i, showing hyphse of the head smut. X 150. 
Fig. 1.—Bud 3 of culm Bi. Positions of hyphae are shown in text figure 2. 
Fig. 2.—Bud 7 of culm N2. Photomicrographed by Mr. W. W. Gilbert and 
author. 
