PLATE 1 
A. —Pecan leaf showing various types of infection of pecan scab. The photo¬ 
graph was taken especially to show the elongated lesions of the midrib of the 
pinnae. 
B. —Young pecan nuts showing elongated lesions situated lengthwise along the 
center of the segments of each nut. About natural size. 
C. —Pecan scab lesions as they appear irregularly over the surface of the nut. 
About natural size. 
D. —A pecan nut about one-half developed, showing very numerous scab 
infections. Three-fourths natural size. 
E. —A pecan nut killed during midsummer, due to a heavy infection of pecan 
scab. The dark blotches on the stem-end of the nut are hold-over stromata 
Such nuts usually fall to the ground before harvest, but some remain attached 
to the twigs all winter. 
F. —A pecan twig taken from a nursery showing premature defoliation due to 
pecan scab. Photograph taken July 17, 1920. 
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