2o6 



MYCOLOGY 



Rust of Stone Fruits, Puccinia pruni-spinQsa:, occurs on various 

 species of the genus Prunus in the southern and central United States. 



Fig. 76.- — Fully expanded cedar apple on red cedar. Long yellow teliosori as 

 finger-like projections are seen. (After Jones and Barlholomew, Bull. 257, Agric. 

 Exper. Stat., Univ. Wise, July, 1915.) 



The secial stage occurs on Anemone and Hepatica, and is known as 

 jEcidium punctatum. 



Hollyhock Rust, Puccinia malvacearum (Fig. 72), is found over the 

 world, where the hollyhock, Althcea rosea, is grown. 



