180 Illinois State Laboratory of Natural History. 



Sept. 30, 6251; Steplierison, Sept. 13, 5832; JoDaviess, Sept. 

 15, 5917, Sept. 10. 5995; Ogle, Sept. 23,6138. C. alpina: Kane. 

 Aug. 30, 1380. 



On Circ&a Lutetiana the sori are marked, while on C. <d- 

 pina they are distinct, smaller, and often circinate. 



P. pimpinellse, (Strauss) Lk. 



II.. III. Amphigenous. Sori rather large, round, scat- 

 tered, soon naked. Uredospores globose or ovate, minutely 

 roughened, thick-walled. 18-21 by 24-27 /*; telentospores broad, 

 ends rounded, little constricted, surface roughened with mesh- 

 like depressions, 18-21 by 29-35 ^; pedicel hyaline, fragile, 

 sometimes more or less lateral. 



Spots obliterated, sori subrotund, scattered, amphigenous, spores 

 cinnafrion, of two forms, ovate and obovate, short pedicelled. Link, 

 Linn. Sp. Plant, VL, P. II., p. 77. 



On Osmorrkiza longistylis: Fulton, 2269,11., III. (Wolf); 

 Adams, June 30, 5359. 0. brevistylis: LaSalle, Sept. 29, 6231. 



Peck (29 Rep. N. Y. State Mus. [1878] p. 73) mentions 

 without describing P. osmorrhizce, C. & P.. on Osmorrhiza. 

 Previously (25 Rep. N. Y. State Mus. [1873] p. 112) he des- 

 cribes P. wyrrhis, Schw. (N. Am. Fungi. [1834] p. 296) on 

 the same host plants. Schroter (Hedw. XIV. [1875] p. 169) 

 shows the latter to be the same as P. pimpineUc, Lk. (Spec. 

 Plant. II. [1824-25] p. 77). Winter (Rabh. Kryptog. Fl. I. 

 [1882] p. 212) unites these two with P. chcerophylli, Purton, 

 (Brit. Plants III. [1821] No. 1553), and other supposed species 

 under the name of P. pimpinellce (Strauss). The above men- 

 tioned specimens collected by Wolf were identified by Peck as 

 P. osmorrhizce, C. & P. ; but they agree with his description 

 of P. myrrhis, Schw., and with Thiimen's specimens, including 

 those of P. myrrhis, Schw. (Mycoth. Univ. No. 1327), collect- 

 ed in New York by Gerard, and P. chcerophylli, Purton, (My- 

 coth. Univ. No. 1229). 



P. galiorum, Lk. 



I. ^Ecidia hypophyllous, small, short, reflexed at summit; 

 spores subglobose or broadly oval, smooth, 15-21 ^. II. Not yet 

 found in Illinois. III. Amphigenous: sori usually scattered 



