WHITE-PINE BLISTER RUST. 
9 
Chelsea, London, in 1813, offered for sale plants " collected in Upper 
Louisiana and principally on the River Missourie, North America." 
There is reason to believe that these were NuttalFs plants. The 
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Fig. 7.— Outline map of the northeastern part of the United States, showing (by black dots) the known 
distribution of white-pine blister rust in North America to and including 1913. 
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Fig. 8.— Outline map of the northeastern part of the United States, showing (by black dots and cross 
hatching) the known distribution of white-pine blister rust in North America to and including 1914. 
The cross hatching in this and the following maps indicates areas which are generally infected. 
plant of interest to us is listed as Riles longiflorum, a new species 
from the Missouri. This is now known as R. odoratum Wendland, 
which is the common form generally cultivated in the eastern United 
