Davis—A Provisional List of Parasitic Fungi. 
959 
POLYPORUS 
Hypocrea aurantiaca, 860 
Hypomyces frondosus, 860 
Hypomyces aurantius, 860 
PONTEDERIA CORDATA 
Cercospora pontederiae, 890 
POPULUS ALBA 
Marssonina castagnei, 881 
POPULUS BALSAMIFERA 
Septoria musiva, 870 
POPULUS CANDICANS 
Marssonina castagnei, 881 
POPULUS DELTOIDES 
Marssonina castagnei, 881 
Melampsora medusae, 913 
Septoria musiva, 870 
POPULUS GRANDIDENTATA 
Fusicladum radiosum, 889 
Marssonina castagnei, 881 
Melampsora medusae, 913 
POPULUS TREMULOIDES 
Fusicladium radiosum, 889 
Marssonina castagnei, 881 
Melampsora medusae, 913 
Sclerotium bifrons, 917 
Septoria musiva, 870 
Taphrina johansonii, 864 
POPULUS SPP. VARII 
Uncinula salieis, 855 
PORTULACA OLERACEA 
Albugo portulacae, 849 
POTAMOGETON 
Doassansia martianoffiana, 899 
POTENTILLA ANSERINA 
Ramularia arvensis, 886 
POTENTILLA ARGUTA 
Marssonina potentillae, 882 
Taphrina potentillae, 864 
