74 
IOWA ACADEMY OF SCIENCE 
COMPARATIVE DISTRIBUTION FOR THE UNITED STATES OF COMMON 
1900 
1901 
1902 
14 Antliracriose of 
raspberry 
—Neb. eastward 
1 
+N. Y to Minn. 
+Iowa 
+Neb. and Mo. to 
N. York 
+Iowa 
15 Spot disease of 
Alfalfa 
# 
+New York 
—Iowa 
16 Brown rot of stone 
fruits 
+Northern fruit belt 
—Pacific Coast 
+N. Y. (cherries) 
+Conn. and south 
—Mich., Mo., 111. 
+Iowa (plums) 
—Cal., (absent on 
rest of coast) 
+Iowa 
+Northern truit belt 
(absent on peaches) 
17 Wheat scab 
- 
18 Apple rust 
+Locally, Nebraska 
eastward 
19 Bean rust 
20 Asparagus rust 
+East and south to 
S. Carolina 
— S. Dakota, Iowa, 
Kansas 
+N. Eng., 0., and 
westward Iowa 
