11 
parasite but a greater mauifestation of disease due to lack of vitality 
iu the hosts. These instances, therefore, form no exception to the general 
rule, that dry weather is not advantageous for the development of the 
Peronosporece. 
In preparing this paper the writer has drawn freely upon his article 
“Downy Mildews in a dry Season” in Ames’ (Iowa) College Bulletin, 
1888, which gives an account for the years 1886 and 18S7, and in some 
instances the form of statement therein used is here reproduced. 
AN INTERESTING UROMYCES. 
By Byron D. Halsted.* 
The following description is of a Uromyces collected the past autumn, 
which has the habit of infesting the perigynia of a sedge, causing them 
to assume a quite unnatural dark color before their time of maturing. 
Uromyces perigynius, Halsted. Sori one-half to 2 mm iu diame¬ 
ter, forming dark-brown, nearly globular patches upon the outside and 
between the veins of the perigynia, not infrequently upon both surfaces 
of the younger leaves, where the patches are often three times as long 
as broad. Teleutospores somewhat variable, 4-6 by 8-10/q with a prom¬ 
inent brown free end ranging from acute to wedge shaped. Contents 
usually granular and often with a large oil globule. Pedicel two to 
three times the length of the spore, slender and hyaline. 
On Garex intumescenSj near Ames, Iowa, September, 1888. D. Gf. 
Fairchild. 
The other known species of Uromyces upon Carex is U. Caricis of 
Peck (Mycotlieca Universalis No. 746), which is very different in habit 
and characteristics of the spore. It is reported only upon Carex stricta 
and not upon the perigynia. In making the comparison it was inter¬ 
esting to observe that with U. Caricis , PA\, there were ocasional double 
spores among those of normal form. Sometimes a half dozen adjoining 
spores inapartially crushed sorus would be of tliepuccinia type. Tlio'se 
who are subscribers to Ellis and Everhart’s N. A. F. may expect the 
Uromyces above described in the next issue. 
NEW SPECIES OF KANSAS FUNGI. > 
By W. A. Kellerman and W. T. Swingle. 
Tilletia buchloeana n. s. In the much enlarged and mostly glob¬ 
ular ovaries of Buchloe dactyloides , abnormally borne on the male 
plants; often all or nearly all the stamiuate spikelets produce the ova¬ 
ries, all of which are infested. Spores dirty brown in mass, as seen 
* Rutgers College, New Brunswick, N. J. 
