PROTOBASIDIOMYCETES 



419 



XVIII. HOLLYHOCK RUST 



l*HCciniii miik'iictwriim Mont. 



DI-DLKV, W. R. The Hollyhock Rust. Cornell Agl. Exp. Sta. Built. 25 : 



154-155. 1890. 



Fi<;. jo.}. PUCCINIA >IALVACEARUM: Krsr m-- HOLLYHOCK. (Photograph by 



II. II. ^hetzel) 



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 (AltJuca 



