A DISEASE OF PINES CAUSED BY CRONARTIUM PYRIFORME. \) 
DISTRIBUTION IN THE DOMINION OF CANADA. 
Alberta. — On Pinus contorta (P. murrayana): * Devil's Lake, 
Banff, by Holway (3, p. 127), in 1907. 
British Columbia. — On Pinus ponderosa: * Vernon, by Brittain, 
in 1913. 
DISTRIBUTION IN THE UNITED STATES. 
New Jersey. — On Pinus sp.: (Type) Newfield, by Ellis (2040), in 
1882 (Herbarium New York State Museum). 
Pennsylvania. — On Pinus pungens: Charteroak, by Orton and 
Adams, in 1913 (F. P. 1 15129); Greenwood Furnace, by Hedgcock, 
in 1914 (F. P. 15444, 15455, and 15462); Petersburg, Huntingdon 
County, by Hedgcock, in 1914 (F. P. 15483). 
Wisconsin. — On Pinus divaricata: * Douglas County, by Davis. 
South Dakota. — On Pinus ponderosa scopulorum: * Rockerville, by 
White; Black Hills near Custer, by Hedgcock and Phillips (F. P. 
15826) and by Hedgcock (F. P. 15801), in 1914. 
Wyoming. — On Pinus contorta: Dubois, by C. E. Taylor, in 1914 
(F. P. 15797). 
Colorado. — -On Pinus contorta (P. murrayana): * Gatos (collector 
not given), in 1906 (3, p. 126-127); Eldorado Springs (F. P. 8500), 
type of Peridermium betheli, Lake Eldora (F. P. 8511), Allenspark 
(F. P. 8502 and 8514), Arrow (F. P. 8515 and 8494), by Bethel, in 
1913; Eldora (F. P. 15550), by Bethel, in 1914. 
On Pinus ponderosa scopulorum: Monument, by Hedgcock, in 
1912; Allenspark, by Bethel, in 1913 (F. P. 8504, 8505, 8510, and 
8451). 
Montana. — On Pinus ponderosa: Darby, by Weir, in 1914 (F. P. 
15556). 
Washington. — On Pinus ponderosa: Wenatchee, by D. F. Fisher, 
in 1914 (F. P. 12467). 
On Pinus sp.: * Seattle, by Bonser (3, p. 127), in 1906. 
California. — On Pinus ponderosa: Trinity National Forest, by 
Box, in 1912; Rocky Gulch, Siskiyou County, by Meinecke, in 1913; 
by Boyce, in 1914 (F. P. 12468); Mills Ranch, Goosenest Mountain, 
Siskiyou County, by Boyce, in 1914 (F. P. 15678 and 15680); Cas- 
tella, Shasta County ; Weaverville and Brown Creek, Trinity County, 
by Boyce, in 1914. 
Arizona. — On Pinus ponderosa scopulorum: Crook National Forest, 
by Swift, in 1914 (F. P. 12470). 
DISTRIBUTION OF THE UREDINIAL AND TELIAL FORMS. 
Cronartium pyriforme, representing both the uredinial and telial 
forms of the fungus, has been collected more frequently and over a 
greater range of terrritory than the secial form. It has been found in 
1 Forest-Pathology Investigations number. 
93041°— Bull. 247—15^—2 
