Davis—Notes on Parasitic Fungi in Wisconsin — IX. 267 
Plasmopara viticola (B.&C.) Berl. & DeToni. A common and 
abundant species. 
Plasmopara australis (Speg.) Swingle. Frequent and abundant 
in the southwestern quadrant of the state. 
Plasmopara viburni Pk. The only Wisconsin collections were 
made at two localities in Marinette county in August, 1913. 
Plasmopara cephalophora Davis. While this has been recognized 
but r'ecently it has been collected on the banks of the Wolf, the 
Wisconsin, and the Chippewa rivers and is probably not rare. 
Plasmopara halstedii (Farl.) Berl. & DeToni. Frequent and 
abundant. It is perhaps a congery of host-linked races. It usually 
occurs upon a single species of host at any particular station. 
Peronospora schleideni Unger. This is reported to have occurred 
sporadically and sparingly about Madison. 
Peronospora urticae (Lib.) DBy. This was recorded by Trelease 
in the Preliminary List of Parasitic Fungi of Wisconsin (1884) as 
having been collected at Kirkland (now Devils Lake) and La 
Crosse. Dr. E. A. Burt kindly examined the Trelease hebarium 
at the Missouri Botanical Garden and found a specimen from 
“Kirkland.” No collections have been made since in Wisconsin. 
Peronospora polygoni Thuem. This has been collected in the 
southwestern part of the state along the Mississippi and lower 
Wisconsin and Chippewa rivers and in Kenosha county in south¬ 
eastern Wisconsin. 
Peronospora effusa (Grev.) Eabh. Frequent and abundant 
especially on Chenopodium album. 
Peronospora obovata Bon. A single collection made in 1911. 
The host is rare in Wisconsin. 
Peronospora silenes Wils. Collected at Necedah and Adams 
only. Local. 
Peronospora alsinearum Casp. Observed at Racine and Madison 
only. Local and not permanently established. 
Peronospora ficariae TuL Rather common throughout the state. 
Peronospora corydalis DBy. Rare and local. It has been col¬ 
lected in the southern part of the state only. 
