Davis—Parasitic Fungi in Wisconsin — III. 
257 
pluriseptate, 60-100 x 3-4/a. On Bidens connata, Fountain City, 
August 12, 1914. 
Telia of Uromyces albus (Clint.) Diet. & Hoi. on leaves of 
Vida americana were collected at Sharon in 1889. I am unable 
to perceive an arrangement of the verrucosities of the spore walls 
in rows. 
The rust on Hystrix patula referred to Puccinia apocrypta 
Ell. & Tracy in the provisional list is probably Puccinia impa- 
tientis (Schw.) Arth. as I am informed by Dr. Arthur. 
Gymnoc&nia peckiana (Howe) Trotter is made up of the 
aecial Caeoma nitens Schw. and the telial Puccinia peckiana 
Howe. Kunkel doubts the relationship (Am. Journ. Bot. 
1:37-45). 
Telia of Melampsoropsis cassandrae (Pk. & cl.) Arth. were 
collected at Solon Springs, June 15th, 1914. 
Additional Hosts. 
Plasmopara australis (Speg.) Swingle. On Echinpcysiis lob- 
ata. Galesville. 
Peronospora parasitica (Pers.) Tul. On Cardamine bulbosa. 
Madison. 
Peronospora trifoliorum D By. On Astragalus canadensis. 
St. Croix Falls. 
Peronospora chamaecysis Wils. is the species that has been 
formed to include American forms such as were recorded in the 
provisional list as P. euphorbiae Fckl. (Mycplogia 6; 204). On 
Euphorbia glyptosperma. Trempealeau. 
Sclerospora graminicola (Sacc.) Schroet. On Setaria glauca. 
Bridgeport. 
Bphaerotheca humuli (D C.) Burr. On Viola canadensis. 
Clintonville. Abundant at this station but confined to the sin¬ 
gle species of violet. Viola scabriuscula was abundant but en¬ 
tirely free from the mildew. 
Erysiphe polygoni DC. On Delphinium (cult.) Poynette. 
(H. L. Russell?) 
