Davis—Notes on Parasitic Fungi in Wisconsin — IX, 253 
30-45xl-l%/-t. It was labeled provisionally Septoria umhellifera- 
rum Kalchb. 
In “Notes’’ V it was stated that while in Oloeosporium caryae 
Ell. & Dearn. as found on Cary a ovata the acervuli are hypophyl- 
lous in the collections on C. cordiformis they are epiphyllous. In 
a collection on the latter host made at Caryville in 1920 they are 
amphigenous. 
In a collection of Marssomna fraxini Ell. & Davis from the 
Mississippi river bottoms at Glen Haven the sporules range from 
30-50x2%-4/x. No matter what the length of the sporule but a 
single septum appears. 
R. E. Stone states that the ascogenous state of Marssonina poten- 
tillae (Desm.) Magn. is Mollisia earliana (E. & E.) Sacc. 
In the parasite recorded as Cylindrosporium clematidis in the 
provisional list the sporuligerous stroma, under favorable condi¬ 
tions, forms a hollow sphere and the spore body is therefore a 
pycnidium. 
In “Notes” IV, p. 687 Septocylindrium caricinum Sacc. was 
recorded as occurring in Wisconsin. Examination of the specimen 
on Carex grisea from Blue Mounds however reveals only tufts of 
hyphae indistinguishable from the conidiophores of Cercospora 
caricina Ell. & Dearn. which are sometimes nearly or quite hyaline. 
The Septocylindrium record therefore should be stricken out. 
Cercosporella apocyni E. & K. and Cylindrosporium apocyni 
E. & E. sometimes occur on the same spots. May it be that they 
are conidial forms of one species? 
Specimens of the parasite on Populus tremuloides referred to 
Cladosporium subsessile Ell. & Barth, have been collected in which 
the tufts are scattered over unaltered portions of the leaves. 
W. B. Tisdale has shown the connection between Heterosporium 
gracile Sacc. and the ascigerous stage Didymellina iridis (Desm.) 
Hoehn. {Phytopathology 10:153-4.) 
Cercospora arctostaphyli Davis {Trans. Wis. Acad. 18:268) 
seems to have been founded upon a misapprehension. There is no 
specimen in the University of Wisconsin herbarium and the char¬ 
acters ascribed are those of Cercospora gaultheriae E. & E. It 
should be stricken out. 
