Parasitic Fungi of Illinois. 173 
pale apiculus, thickly but minutely tuberculate, 18-24 by 22-39»; 
pedicel hyaline, fragile, short, sometimes more or less lateral. 
On Ranunculus repens: Riverside, Illinois, near Chicago, 
June 2, 1883, J. C. Arthur. 
The little warts of the epispore are scarcely or not at all 
visible in soaked specimens. The teleutospores sometimes ger- 
minate in the sorus in June. One-celled specimens are not 
uncommon, and some vary widely from the described type. 
P. podophylli, Schw. 
I. Hypogenous. Spots indefinite, mostly large, sometimes 
confluent over the whole leaf, yellow; «cidia densely crowded, 
very short, deeply and numerously split and much recurved, 
very fragile; scidiaspores subglobose or elliptical, epispore 
very thin, minutely tuberculate, 16-27 «; spermagonia minute, 
rather sparsely scattered, opposite the ecidia. (Avcidiwm podo- 
phylli, Schw.) II. Unknown. III. Amphigenous on leaves 
and stems, on the former mostly beneath; sori small, rounded, 
usually more or less confluent; spores ovate, obovate or ellipti- 
cal, beset with straight or curved conspicuous spines, 20-27 by 
39-48 »; pedicel very delicate and fugacious. 
On Podophyllum peltatum: Union, April 12, 4031, I, April 
14, 4085, I., 4086, L., I[L., April 15, 4107, L., IIT., April 17, 4180, 
L, TIL., April 18, 4167, [., JIL. _Mepril 19, 4174, L, OIL, April 24, 
4244, L, IIL, April 26, 4302, I, IL, 4804, T, OL., April 29, 
4392, L., IIL; Jackson, April 20, 4196, I., TIT. _ Apel 21, 4215, 
L, OF _ tipril 27, 4841, 1., WL; Pulaski, May 1, 4400, I., III., 
4419, L, May 4, 4482, I., IIL, May 5 , $496, ITL., May 6, 4526, 
Tiss TL: McLean, July 5, 2279, Tey 7, 2283, July 12, 2282, 
‘ae 1, 2281; Tazewell, July 22, 2288; McHenry, Aug. 20, 
1140; Lake, Aug. 27, 1348. 
Commonly known as P. aculeata, Schw., but the above 
name has priority. The species is readily identified by the 
spines of the teleutospore. The ecidia occur on the parenchy- 
mentous portions of the leaf, and the teleutospores are not 
unfrequently subsequently produced along the veins and upon 
the stems, having no apparent mycelial connection with the 
ecidia. In other cases they are produced either in the midst 
of the ecidia or in close proximity to them. 
