ranislfic Fiiin/I of TUinois. 229 



curved narrow border abrupt, finely divided: spores hirge, sub- 

 <<lobose or ellii)tical, epispore very thick, very conspicuously re- 

 ticulately rou»i:hened, 28-:i() by 83-4;^ fi; spermagonia scattered 

 over the upper side of infected area, minute, reddish brown. 



On Cephalanfhiis occ/dcnfalis : Ravenswood, near Chicago, 

 June(A.D. 1S83). coll. J. C.Arthur; Quincy, July 12 (A. I). 

 1883). coll. C. A. Hart. 



-ffl. houstoniatum, Schw. 



Hypophyllous. i?!]cidia scattered over the entire leaf, 

 small, very short, recurved bcnxler narrow, many times s))lit; 

 spores globose or elliptical, often angular, minutely tuberculate, 

 12-15 by 15-18^; spermagonia numerous, conspicuous, appear- 

 ing before the a^cidia. scattered over the entire under surface, 

 occasionally above, purple. 



Without distinct spots, rseudoperidia elevated, pallid, subconical, 

 contracted at the apex, and somewhat excavated. Spores orange. The 

 infected plant, though degenerated, yet Howers. — Schweinitz, N. Am. 

 Fung., No. 2891, p. 293. 



On Houston in c(t'riih'a: Union, April IH, 5010 (Earle), 

 April 17, 4133. April 26, 4307; Jackson. April 27. 4344, Ajiril 

 28, 4362; Johnson, May 13, 4663. 



The infected plants are easily recognized, as the fungus 

 causes them to grow more slender and more strictly erect, often 

 taller, and gives them a yellowish appearance. 



2E. erigeronatum, Schw. 



Hypophyllous. Spots usually distinct, large, swollen, yel- 

 low: tecidia subcircinate or irregularly crowded, short, soon 

 many times divided and much recurved; fragile, soon becoming 

 pulverulent; spores subglobose, epispore thin, tuberculate, 

 12-15 /*; spermagonia indistinct, few, usually centrally crowd- 

 ed, mostly on upper side of leaf, yellow. 



Spots large, yellowish, somewhat swollen, pseudoperidia densely 

 distributed, without order, elevated, spores yellowish. — Schweinitz, .\. 

 Am. Fungi, No. 2869, p. 292. 



On Er/gcroH Ccoiadense : Adams, June 27, 5306, July 6, 

 5434. E. hellklifolium: Johnson, May 13, 4664, May 16, 4699. 



