180 I/l/Ho/s Sfafv Lahorafonj of Natural Hixfory. 



Hept. ;}(). ()251; Stephenson, Sept. 18, 5882; JoDaviess. Sept. 

 K), ri917, Sept. W). rm:^: Ogle, Sept. 28,6188. C. alpina: Kane. 

 Aug. 80, 18N0. 



On Circd'a Liifefiaiia the sori are marked, while on C. al- 

 pina they are distinct, smaller, and often eircinate. 



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 ^t; teleiitospores broad, 

 ends rounded, little constricted, surface roughened with mesh- 

 like depressions. 18-21 by 2^-85 ^<: pedicel hyaline, fragile, 

 sometimes more or less lateral. 



Spots obliterated, sori subrotund, scattered, amphigenous, spores 

 cinnamon, of two forms, ovate and obovate, short pedicelled. — Link, 

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



On OsmorrJtiza longistyVis : Fulton, 2209,11.. III. (Wolf); 

 Adams, June 80, 5859. 0. hrerixfijlis: LaSalle, Sept. 29, 6231. 



Peck (29 Rep. N. Y. State Mus. [1878] p. 78) mentions 

 without describing P. ()s)norrh/za\ C. & P.. on Osiiion-Jiiza. 

 Previously (25 Rep. N. Y. State Mus. [1878] p. 112) he des- 

 cribes P. iiij/rrhis. Schw. (N. Am. Fungi. [1884] p. 290) on 

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

 shows the latter to be the same as P. pimpineUa\ Lk. (Spec. 

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

 [1882] p. 212) unites these two with P. clia'rophijlli^ Purton. 

 (Brit. Plants III. [1821] No. 1558), and other supposed species 

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

 tioned specimens collected by Wolf were identified by Peck as 

 P. osmor>-Jr/za'. C. & P., but they agree with his description 

 of P. iin/rrh/s, Schw., and with Thiimen's specimens, including 

 those of P. myrrhis, Schw. (Mycoth. Univ. No. 1827), collect- 

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

 coth. Univ. No. 1229). 



P. galiorum, Lk. 



1. ^Fcidia 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 



