Davis — A Provisional List of Parasitic Fungi. 945 



HORDEUM VULGARE 



Helniinthosporium gramineum, 890 



sativum, 890 



teres, 889 



Puccinia graminis, 905 

 Puccinia simplex, 905 

 Ustilago hordei, 897 

 nuda, 897 



HOUSE FLIES 



Empusa muscae, 849 



HUMULUS LUPULUS 



Cylindrosporium humuli, 882 

 Plasmopara humuli, 850 



HYDROPHYLLUM VIRGINIANUM 

 Erysiphe cichoracearum, 858 

 Peronospora hydrophylli, 853 

 Puccinia hydrophylli, 909 



HYPERICUM ASCYRON 



Uromyces hyperici-frondosi, 902 



HYPERICUM BOREALE 



Uromyces hyperici-frondosi, 902 



HYPERICUM PUNCTATUM 



Septoria sphaerelloides, 873 

 Uromyces hyperici-frondosi, 902 



HYPERICUM VIRGINICUM 



Uromyces hyperici-frondosi, 902 



HYSTRIX PATULA 



Epichloe typhina, 861 

 Piricularia parasitica, 888 

 Puccinia apocryla, 904 fo 



ILEX VERTICILLATA 



Ramularia prini, 887 

 Rhytisma ilicis-canadensis, 863 

 Microsphaera alni, 856 



