364 
heads, containing a much greater number of spores. 4. Holwan 
Dietel on the same host, has no spines. Uredospores in the same 
sori with the teleutospores, obovate or elliptical, rough, 23-30 
15-18 », pale yellowish-brown. 
DOASSANSIA AFFINIS Ell. & Dearness. 
On Sagittaria variabilis. \ondon, Canada, July, 1895. (Dear- 
ness, 2269.) 
Sori hypophyllous, pustuliform, globose or elliptical, 200-300 p 
in the longer diameter, dark-colored and collapsing above, grega- 
rious in elongated groups, the part of the leaf occupied being at 
first yellowish. Spores globose or elliptical, 8-1o y in the longer 
diameter, epispore comparatively thin. 
Differs from D. Sagittariae on the same host, in its larger sori 
and smaller less angular spores with thinner epispore. From D. 
obscura Setchell it differs in habit and character of the sori; J. 
opaca Setchell differs in its larger spores as well as in some other 
respects. 
AECIDIUM SPHAERALCEAE E. & E. 
On leaves of Sphaeralcea angustifolia. Las Cruces, New Mexico. 
June, 1895. (Prof. T. D. A. Cockerell.) 
Hypophyllous, densely cespitose in clusters 2-8 mm, diam. 
Aecidia deep orange color, cylindrical, closed at first, then open, 
margin toothed, becoming entire, cups about % mm. high, 350- 
400 » broad. Spores subglobose or elliptical, smooth, 15-20 # 19 
the longer diameter, orange-yellow. Spermogonia on yellowish 
spots on the upper side of the leaf. 
Differs from A. Callirhoes E. & K. in its cylindrical aecidia 
and deep orange color. 
PERONOSPORA WHIPPLEAE E, & E. 
On leaves of Whipplea modesta, Ukiah, Mendocino Co., Cal., 
May, 1894 (W. C. Blasdale), 
Mycelium hypophyllous, effused, dirty gray. Fertile hyphae 
250-350 » high, 3-4 times dichotomously branched, the ultimate 
divisions simple or bifid and usually bearing on one side a short, 
straight, lateral branchlet 6-8 7 long. Conidia short-elliptical, 
brownish, smooth, 18-22x 12-15 ». Ovdspores not seen. 
This appears to be distinct from P. ribicola Schrtr., the only 
other species recorded on Saxifragaceae. 
