254 Wisconsin Academy of Sciences, Arts, and Letters. 
was only one leaf; this is part of it. It seems to differ from 
S. solidaginicola in its shorter spores but it may turn out after 
all to be only a var. of the species”, and then by way of post¬ 
script, “Try and look into it.” I think that it is now safe to 
say that the name should be eliminated by reason of being ap¬ 
plied to a short spored specimen of a Septoria that occurs in 
Wisconsin on both Solidago and Aster and known as S. solidagi¬ 
nicola Pk. According to the description the sporules of that 
species are 4/x in diameter while in our specimens they are 
iy 2 -2y 2 p. Through the kindness of Dr. H. D. House I have 
had an opportunity to examine type material and find the spor¬ 
ules about 1%^ thick. 
Examination of Wisconsin specimens that were referred to 
Phlepspora oxyacanthae (Kze. & Schm.) Wallr. shows a fine 
branched mycelium, inter- and intra-cellular, ramifying through 
the affected portions of the leave's. The aerial branches of this 
mycelium constitute the conidia which are assurgent, more or less 
strongly curved sometimes even horse shoe shaped, pluriseptate, 
60-100 x 4-5/x. These form a loose white felt in patches on the 
lower surface of the leaves which suggest a powdery mildew. 
No spots are caused but the affected tissues finally become dead 
and brown. 
Leptothyrium dryinum Sacc. Specimens on Quercus rubra 
collected at Minocqua have sporules 15 x 10ft like those of Lepto- 
fkyrium maculicolum Wint. but the small fruit bodies borne on 
large pale leaf areas are characters of L. dryinum Sacc. A 
specimen collected at Racine is probably on Quercus ellipsoidalis. 
Quercus alba should be stricken from the list of hosts of this 
fungus in the provisional list as I find that the specimen in my 
herbarium on that host is Phyllosticta phomiformis Sacc. 
Gloeosporium septoriodes Sacc. Saccardo in his description 
states that the sporules are always continuous. Winter in his 
description of Marsonia quercina Wint. which Saccardo gives as 
a synonym, describes the sporules as uniseptate. Ellis & Ever¬ 
hart in their description of Gloepsporium septorioides Sacc. var. 
major E &. E. state that the endochrome is often indistinctly 
divided in the center. Wisconsin specimens on Quercus rubra 
show occasional sporules with a median septum and the two 
halves of the sporule separate at this point resulting in two in- 
