Davis—Notes on Parasitic Fungi in Wisconsin — IV. 675 
The fungus referred to Fusicladium radiosum (Lib.) Lind 
var. microsporum (Sacc.) Allesch. in “Notes” 111:256, is per¬ 
haps not distinct from Cladosporium subsessile Ell. & Barth. 
The conidia are 12-15 x 4/x, continuous. This has since been 
collected at Whitehall. 
A specimen on Aster puniceus was collected in Oconto County, 
Wisconsin, July 19, 1909, and placed in my herbarium with 
Cercosporella cana Sacc. and Aster puniceus was given as a host 
of this species in the provisional list. Inside the packet I find 
the following description: On angular or indefinite areas that 
finally become brown; conidiophores hypophyllous, fasciculate, 
cylindrical or tapering upward, denticulate, sometimes branched, 
20-35 x 5/*; conidia hyaline, obclavate, pluriseptate, straight, 
or curved, 60-130 x 3/*. In the absence of definite knowledge of 
the relationship of this to Cercosporella cana Sacc. on Erigeron 
and to C. reticulata Pk. C. nivea Ell. & Barth., C. ontariensis 
Sacc. and C. dearnessii Bubak & Sacc. on Solidago, I am desig¬ 
nating it Cercosporella cana Sacc. var. gracilis n. var. 
Specimens of Cercospora corni Davis collected at Grays Mills 
in September show some of the conidia darker, thicker walled 
and strongly constricted at the septa, suggesting ultimate di¬ 
vision into separate globose cells which might perhaps retain 
vitality through the winter. 
To the original description of Cercospora ageratoides Ell. & 
Evht. (Journ. My col. 5: 71) is appended a reference to a form 
on Eupatorium album having shorter (40/*) conidiophores and 
longer (70-80/*) and narrower (3/*) conidia. In a collection 
on Eupatorium urticaefolium from Lynxville the conidiophores 
are 20^-0 x 3-6/*, and the conidia up to 100 x 3 - 41 / 2 /*, effused 
over indefinite areas. 
Cercospora zebrina Pass, is referred to C. helvola Sacc. as a 
variety by Ferraris (FI. Ital. Crypt. 1:8:423.). 
TJrocystis waldsteiniae Pk. was inadvertently omitted from 
the provisional list. It has been collected but once in Wiscon¬ 
sin but it was then abundant at the station which was at Plant¬ 
ing Ground lake near Three Lakes. 
