PROTOBASIDIOMYCETES 419 



XVIII. HOLLYHOCK RUST 

 Pucdnia malvacearum Mont. 



DUDLEY, W. R. The Hollyhock Rust. Cornell Agl. Exp. Sta. Built. 25 : 

 154-155. 1890. 



FIG. 204. PUCCINIA MALyACEARUM: RUST OF HOLLYHOCK. (Photograph by 



H. H. Whetzel) 



The hollyhock rust is known to infest a large number of genera 

 and species of the mallow family (Malvaceae). It is at present widely 

 distributed throughout a large portion of the world, and is in the 

 United States most important on the cultivated hollyhock (Alth<za 



