Long: Aecial Stage of Coleosporium ribicola 311 
The coleosporial stage of this rust has been reported on the fol- 
lowing species of Ribes: R. grossularia Linn., R. inebrians Lindl., 
R. leptanthum A. Gray, R. longifolimn Nutt., R. pumilum Nutt., 
R. ptcrpusHKoehne, and R.valicola Greene, and from three states, 
Colorado, New Mexico, and Wyoming. The writer has collected 
this Coleosporium on R. mescalerimn Coville in Amole and La 
Junta Canyons, Santa Fe National Forest, New Mexico, October, 
1914 (F.P. 21162 and 21161) and on R. longifoliiim, Albu- 
querque, New IMexico, October, 1914 (F.P. 21163). 
Pinus edulis, tbe aecial host, occurs in Colorado, western 
Texas, eastern Utah, southwestern Wyoming, northern and 
central Arizona, New Mexico, and southward into Mexico. The 
known distribution of the coleosporial stage of this rust is, there- 
fore, well within the range of its aecial host (P. edulis) and it is 
very probable that Peridermium ribicola will also be found to 
have practically the same general range. 
Office of Investigations in Forest Pathology, 
Bureau of Plant Industry, 
Albuquerque, New Mexico. 
