Davis—A Provisional List of Parasitic Fungi . 
945 
HORDEUM VULGARE 
Helminthosporium 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 
E rysiphe 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 apocryta, 904 
ILEX VERTICILLATA 
Ramularia prini, 887 
Rhytisma ilicis-canadensis, 863 
Microsphaera alni, 856 
