Davis—Parasitic Fungi of Wisconsin. 765 
On leaves of Parietaria Pennsylvania Muhl. Sulli¬ 
van. July 1906. This loooks so different from 
any specimen on Urticaceae that I have seen that 
I have thought it best to keep it separate. It is 
not unlikely that specimens collected later in the 
season would show paler spots. 
732. Septoria sphaereleoides E. & K. 
On Hypericum punctatum Lam. Adams county. 
The specimens which I have referred to this 
species because of the correspondence of the 
sporules bear pycnidia only 50—70 microns in 
diameter on oblong to angular spots which are 
testaceous to fulvous in color and 5—15 X 3—5 
mm in size. 
733. Septoria xantiiii Desm. 
On Xanthium Canadense Mill. Racine and Somers. 
Pycnidia sometimes 120 microns in diameter. 
734. Tubercueixa davisiana Sacc. & Trav. 
On Salix cordata Muhl. Racine. In the summer of 
1906 what appeared to be a Phytisma came 
abundantly on the leaves of Salix cordata Muhl. 
in a ravine near Racine and in every specimen 
examined a hyphomycetous fungus occurred on 
the lower surface of the leaves confined to the 
areas bearing the ascomata. Specimens Were 
sent to Prof. Saccardo for determination and 
were described under the name given above. 
Prof. Peck informs me that on looking over the 
, specimens of Phytisma salicinum (Pers.) Fr. in 
the herbarium of the State Museum at Albany 
bT. Y. he found the same fungus on the leaves of 
Salix cordata Muhl. and suggests the possibility 
of the Phytisma being different from that ordi¬ 
narily found on willow leaves. Material was 
wintered out doors but failed to mature and the 
following season I was unable to find either Phy¬ 
tisma or Tuberculina where they were so abun¬ 
dant the year before. 
