60 BOTANICAL GAZETTE. [ March, 
Mildews of Indiana. 
J. N. ROSE. 
The following mildews were collected in the vicinity of 
Wabash College during the past season. It is not presumed to 
be a complete list, but merely a beginning, which it is hoped may 
lead to the cataloguing of all the species of the state. I have 
also listed the hosts upon which they were found, mentioning 
those plants which, as far as could be learned, had not before been 
reported as hosts. This is the first attempt made in this state to 
determine the various species of this group. The list comprises 
11 species and 29 hosts, which have been preserved in the herba- 
rium of the college. 
ave followed in the specific descriptions Cooke’s “ Hand- 
book of British Fungi,” Bessey’s “Erysiphei of the United 
States,” and “ Earle’s Podosphiera,”' and have used to good advan- 
tage in collecting hosts Trelease’s “ Parasitic Fungi of Wiscon- 
sin.” Such notes have been added as have come under my own 
observation, and when the description has not been complete I 
have added other characters and pointed out differences. These 
it is hoped, may be of use in an early revision of some of the 
ill-defined species. 
1. Uneinula cireinata C. & P. 
On leaves of Red Maple. While the perithecia are quite 
large, .14mm. in diameter, they do not equal those found by Bes- 
sey on the Silver Maple. Asci only from 8 to 10. 
2. Microsphera Friesii Lév. 
Very abundant on the leaves of the Lilac. Common every- 
where. 
3. Microsphera Russellii Clinton. 
Found abundant on leaves and stems of Oxalis stricta, espe- 
cially on plants growing in moist, shady places. 
4. Microsphera Platanii Howe. 
On leaves of Sycamore. Common. 
5. Microsphera Grossularie Lévy. 
On Sambucus Canadensis. As far as I can learn, this is the 
first time this species has been found on the Elder in this coun- 
try. Cooke gives it as a host in his Hand Book. Farlow men- 
tions the Elder as the host of M. Hedwigii; while Trelease gives 
it for M. VanBruntiana. While our specimen does not corre- 
1Botanical Gazette, IX. 24. 
