WHEAT CULTURE. 



333 



Fig. 1. — Ears of Wheat with Bunt. (From McAlpine's " Smuts of Australia.") 



A. Ear showing spikes standing out from axis and somewhat separated. 



B. Ear with glumes removed to show the bunt balls aud grains. 



a b c d _J 



Fig. 2. — Healthy and Bunted Wheat Grains. (From Purdue Univ. Circ. 22.) 



a. Normal grain, showing the longitudinal furrow. 



b. Cross section of (a), showing furrow. 



c. Bunted grain, showiug absence of furrow. 



d. Cross section of (c), showiug absence of furrow and the black spore mass wlncfc 



has replaced the normal contents. 



