690 Wisconsin Academy of Sciences, Arts , and Letters. 
NOTES ON PARASITIC FUNGI IN WISCONSIN—V. 
J. J. Davis. 
Plasmopara humuli Miyabe & Takahashi which has been re¬ 
ported as occurring in Racine and Crawford counties was found 
in 1916 in Monroe County also. It appears to be indigenous 
to Wisconsin. 
R. E. Stone has described Mycosphaerella aurea n. sp. as the 
ascogenous stage of Septoria aurea Ell. & Evht. {Phytopath. 
6:424.) 
Hendersonia typhae Oud. is referred to Scolecosporium by von 
Hoehnel ( Fragm. zur My hoi. no. 268). 
Septoria salicina Pk., as I understand it, appears first as 
small scattered round or subangular black spots which increase 
in size (2-5 mm.) and more or less of the central portion be¬ 
comes grey and arid. In this central portion the few hypophyl- 
lous pycnidia appear. The deeply lying ones are globose but 
those that impinge upon the unyielding epidermis of the host 
are flattened thereby so that sometimes they resemble acervuli. 
The sporules are arcuately curved, acute, 25-52 (mostly 30- 
45) x 2-3//,. They have usually a single median septum but 
some of the longer ones have 2 or 3 or even 4. I have seen 
this in Wisconsin on Salix lucida only and the herbarium speci¬ 
mens are on this host or on Salix Fendleriana except North 
American Fungi, 2nd series 3064 which is labeled Salix cordata. 
Fungi Columbiani 3872 bears much larger zonate spots due 
perhaps to the unusual thinness of the leaves of the host. 
Gloeosporium boreale Ell. & Evht. (N. Am. Fungi 3279) ap¬ 
pears to be a small spored form of the same fungus. N. Am. 
Fungi 2nd series 3472 issued as Septogloeum salicinum (Pk.) 
Sacc. does not seem to differ from Septoria albaniensis Thuem. 
