92 Wisconsin Academy of Sciences, Arts, and Letters. 
doubtful. The New Jersey fungus is certainly not as conspicu¬ 
ous as yours and produces no such leaf spots. ’ ’ 
Considering the differences in the hosts it seems to me that 
there is a variable Cladosporium on Hypericum to forms of 
which these two names were applied. If that is the case I would 
prefer the later name here used to avoid tautology. 
Cercospora fingens n. sp. Spots suborbicular, immargin- 
ate, blackish brown, 3-5 mm.; conidiophores hypophyllous, 
olivaceous brown, somewhat crooked, denticulate, thicker and 
paler toward the apex, pluriseptate, 130-250x4-6/*; conidia hy¬ 
aline, pluriseptate with a tendency to break apart at the septa, 
somewhat flaccid, tapering upward, 100-215x3-5/*. On Thalic- 
trum dasycarpum , Burnett, Washburn and Price Counties, 
July-September. On Thalictrum dioicum, Lone Bock, (R. A. 
Harper and G. M. Reed). Because of the long and slender hy- 
phae and conidia this resembles, under a hand lens, Phytoph- 
thora thalictri Wils. & Davis for which it was mistaken in the 
field. 
I was at first disposed to refer this to Cercospora aquilegiae 
Kell. & Sw. but as no specimens have been collected on Aquil- 
egia in Wisconsin, I infer that it is distinct. 
Puccinia microsora Koern. Amphi-and teleuto-spores on 
Car ex Tuckermani Price County and Carex scabrata, Bayfield. 
Coleosporium sonchi-arvensis (Pers.) Lev. II, III, on Sonchus 
asper, I on Pinrn sylvestris, Sturgeon Bay. The uredinia were 
collected by Mr. J. 0. Sanders, Entomologist of the Wisconsin 
Agricultural Experiment Station, who found it to be locally 
abundant. The aecia usually appear upon but one of the paired 
leaves. 
Herbarium of the University of Wisconsin, Madison Wis¬ 
consin, March, 1913. 
