432 BULLETIN OF THE BUSSEY INSTITUTION. 
PERONOSPOREZ. 
Cystorus cANpIpuUS, Lev. Bussey Inst. ; Wood’s Hole ; Newton. 
Common on cruciferous plants. Odspores on Sinapis nigra. Noank, 
Conn. 
Cystopus cusicus, Ley. Conidia and odspores on Ambrosia artemi- 
siefolia. Newton. 
Cystrorus Buir1, Bivon. -Common near Boston on species of ama- 
ranth. 
PERONOSPORA INFESTANS, Mont. Common on potatoes near Boston. 
PERONOSPORA VITICOLA, B.& C. On wild and cultivated grape-vines. 
Common near Boston. 
PERONOSPORA NIVEA, Unger. Cambridge, near Fresh Pond; Wood’s 
Hole. On leaves of Geranium maculatum. 
PERONOSPORA GANGLIFORMIS, Berk. Common on lettuce, Water- 
town. On Nabalus albus. Wood’s Hole. 
PERONOSPORA PARASITICA, Pers. On Lepidium Virginicum. Noank, 
Conn. . 
PERONOSPORA EFFUSA, Grey. On leaves of Plantago major. Newton. 
UREDINEX. 
Uromyces MAcRosporA, B. &C. On Lespedeza capitata. Newton ; 
Bussey Woods. 
Uromyces Arr (Schw.). On Arisema triphyllum. Common near 
Boston. 
UROMYCES APPENDICULATA, Ley. Bussey Inst. On bean-leaves. 
Uromyces APIcuLosa, Lev. On clover. 
Uromyces Hyperici (Schw.). Bussey Woods. 
MELAMPSORA SALICINA, Lev. On willows. Very common near Bos- 
ton. , 
MELAMPSORA BETULINA, Desm. On birches. Common near Boston. 
MELAMPSORA POPULINA, Levy. On Populus. Common near Boston. 
PuCcCINIA VARIABILIS, Grev. On Nabalus albus. Wood’s Hole. 
PuccrniA VALANTIA, Pers. On Galium. Bussey Woods. 
PucciniA Circe, Pers. On Circea Lutetiana. 
Puccinta HELIANTHI, Schw. On leaves of Helianthus annuus. 
Noank, Conn. Bussey Inst. 
Puccin1A Prunorum, Lk. On Prunus serotina, and other species 
of Prunus. Common near Boston. 
Puccini STRIOLA, Lk. On species of Carex. Bussey Woods. 
Puccin1A GRAMINIS, Pers. Everywhere. 
PucciniA SorGui, Schw. Newton. 
Puccrinta AsTERIS, Schw. On leaves of Aster. Newton. 
Puccinta Peck1ana, Howe. On Rubus occidentalis. Bussey Woods. 
