238 Illinois State Laboratory of Natural History. 
colored, the affected cotyledons soon yellow; scidia not numer- 
ous, irregularly clustered, short-cylindrical, becoming coarsely 
divided and widely spreading, pseudoperidium thin but firm; 
spores irregular, mostly elliptical, epispore rather thick, tuber- 
culate, 12-15 by 15-18 «; spermagonia very few, scattered, 
above. 
On Crotonopsis linearis: Johnson, May 12, 4648, May 18, 
4662, May 16, 4701. 
48. urtice, Schum. 
Hypophyllous. Spots distinct, brown, border yellow; ecidia 
densely clustered, short, the narrow border abruptly turned, 
finely divided; spores subglobose, epispore rather thin, sparsely 
tuberculate, 15-21 »; spermagonia minute, scattered, on the 
upper side of spot, reddish brown. 
On Urtica: Warsaw, IIL, June 27, coll. C. A. Hart. 
4&. smilacis, Schw. 
Hypophyllous. Spots large, circular, somewhat effused, 
pale yellowish, somewhat thickened; ecidia irregularly seat- 
tered or crowded, short, recurved border wide and rather 
coarsely divided; spores irregular, mostly angular, elliptical to 
oblong, epispore thick, conspicuously tuberculate, 15-18 by 
18-22 »; spermagonia rather numerons, scattered, mostly 
above, honey-yellov. 
On Smilax herbacea: Ravenswood, near Chicago, June 29 
(1883), J. C. Arthur. 
AB. trillii, Burrill. 
Hypophyllous. Spots distinct or somewhat confluent, cir- 
cular, effused, yellowish; ecidia densely aggregated around a 
free central circular space, sometimes with a more or less dis- 
tinct outer circle later in development, short, pseudoperidium 
thin, fragile, soon after opening becoming pulverulent; spores 
subglobose, epispore very thin, smooth, 19-24 »; spermagonia 
very numerous, rather prominent, scattered, central, on both 
sides of leaf. 
On Trillium recurvatum: Union, April 24, 4251. 
Differs from Al. conrallarie in the more fragile and fuga- 
cious zecidia, and in the smooth, very much thinner epispore. 
