Parasitic Fungi of Illinois. 237 
4a. pustulatum, Curtis. 
Hypogenous. Spots small, reddish yellow, thickened; 
ecidia rather densely crowded, often in asmall circle with a 
vacant.centre, short, rather finely split and recurved; ‘spores 
subglobose, inconspicuously tuberculate, 16-21 »; spermagonia 
few, yellowish, epiphyllous, difficult to make out. 
Spots small, yellowish, sometimes stained with red, thickened, often 
concave above, convex below; peridia short, subcrowded, often forming 
a circle about a free central space;spores pale orange, subglobose, 
.00066-.00083 in. in diameter.—Peck, 23 Rep. N. Y. State Mus., p. 60. 
On Comandra umbellata: McLean, May 20, 4717, May 25, 
4782, May 29, 4804, May 30, 4827, 4850; Champaign, June 10, 
4955. 
48. euphorbie, Gmel. 
Hypophyllous. Aicidia uniformly scattered over the en- 
tire surface, short, the narrowly recurved border soon becoming 
pulverulent; spores subglobose to oblong, often irregular and 
angular, epispore rather thick, tuberculate, 12-15 by 15-24 »; 
spermagonia scattered among the ecidia or none, not found on 
the upper side of leaf. 
On leaves of Euphorbia polygonifolia: Ravenswood, near 
Chicago, Oct. 11, 1883, J.C. Arthur. EH. hypericifolia: Adams, 
June 29, 5350, July 6, 5430; McLean, July 7, 2482, July 27, 
2431, Oct. 6, 1801; Tazewell, July 22, 2430; Piatt, Aug. 27, 
1106. E. maculata: Kane, Aug. 30,1874; McHenry, Sept. 1, 
1414; Boone, Sept. 2, 1420; LaSalle, Sept. 16, 1548, 1549; 
Rock Island, Sept. 21, 1617, Sept. 24, 1651. EH. dentata: Adams, 
July 6, 5428; Ogle, Sept. 26, 6182. 
This occurs with Uromyces euphorbic in Nos. 1064, 1548, 
1616, 2353, and 5428. The genetic connection has not been 
ascertained for our plants. 
Persoon is often given as the authority for this name, but 
in his Syn. Fung., p. 211, he refers to Gmelin as the author. 
AS. Euphorbie-hypericifolie, Schw., is probably a synonym. 
. crotonopsidis, Burrill. 
Hypogenous, occurring upon the cotyledons, and less com- 
monly on the caulicle and lower leaves. Spots distinct, dark- 
