2o6 



MYCOLOGY 



Rust of Stone Fruits, Puccinia pruni-spinoscE, 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 

 bnger-hke projections are seen. {After Jones and Bartholomew, Bull. 2S7. Agric 

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



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

 jEcidium punctatum. 



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

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



