Davis—Notes on Parasitic Fungi in Wisconsin — VII. 405 
been segregated. (See Nishikado, Ber. Ohara Inst, landivirtsch. 
Forsch. 12:171 el seq.) Formosan material on Leersia hexandra 
has been segregated by Sawada under the name Dactylaria leersiae 
but has been referred to Piricularia by S. Ito. See Mycologia 
12:30, 32. 
Cercospora rosicola Pass. 
On Rosa ~blanda. Wonewoc. A variable species as one might 
perhaps expect from the variable character of the hosts. The vari¬ 
ation is especially marked in the conidiophores. In this collection 
they are amphigenous, sometimes scattered or in small tufts, more 
or less undulate, usually dilated at base, 40-75 x 3 /a. Fungi Co¬ 
lumbiana 3412 , on Rosa blanda, London, Canada (Dearness) is an 
extreme form with slender, undulate conidiophores sometimes at¬ 
taining a length of 150/a. This form with long, slender, more or 
less spreading and undulate conidiophores I am designating var. 
undosa n. var. The spots on Rosa blanda are less definite and 
orbicular and there is less of the purple discoloration of the sur¬ 
rounding leaf area, but that is probably determined by the char¬ 
acter of the tissue of the host. 
Cercospora galii Ell. & Hoi. 
On Galium asprellum. Westboro, Bruce, and Nekoosa. The 
spots are often indeterminate and the conidia tapering. Cercos¬ 
pora punctoidea Ell. & Hoi. (in lit.) was recorded in A Supple¬ 
mentary List of Parasitic Fungi of Wisconsin , No. 312 (Trans. 
Wis. Acad. 9: 167), but a description was never published pre¬ 
sumably because Mr. Ellis concluded that it was not distinct. 
In “Notes” I (p. 90) mention was made of the occurrence of 
a mucedine on leaves of Ribes americanum. What is perhaps the 
same fungus was collected at Dexterville on spots on leaves of 
Ribes prostratum on the last day of August, 1917. The appear¬ 
ance of the spots suggests that they were caused by Septoria si- 
birica Thuem. but no pycnidia were found. The following notes 
were made: Tufts amphigenous, scattered, snow white, variable 
in size; conidiophores hyaline, straight or lax or flexuose, contin¬ 
uous, sometimes branched, 12-45 x1^/a; conidia hyaline, fusiform 
to cylindrical, straight, continuous, catenulate, 5—22 x 1-2/a. 
Thalictrum revolutum should have been recorded as a host of 
Entyloma thalictri Schroet., specimens collected near Kacine be¬ 
ing upon what I take to be that host species. 
