198 ARTHUR-BISBV— TRANSLATION OF SCHWEINITZ'S 



mens, mere fragments. The large decompound leaves of the tall 

 growing Osmorrhiza could not be mistaken in the field for the little 

 wind-flower, but the trifoliate tip of one of the large leaves when 

 isolated might well be supposed to be the whole leaf of a small plant. 



2830. 20. C. U. Campanularum, Lk. 44, on C. amplexicaulis, Syn. Car. 465, 



and Bethlehem. 

 (465. 7. [Uredo] Campanulse. Rarely occurs on Campanula per- 

 foliata.) 



No specimen or packet is in the collection to represent this 

 number. The host is one on which there is no other record of a 

 rust, although a species of Coleosporium does occur on the closely 

 related genus Campanula as now understood. It is highly probable, 

 however, that Schweinitz had some fungus not a rust. The plant is 

 now known as Specularia pcrfoUata (L.) A. DC. {Campanula per- 

 foliata L., C. amplexicaulis JNlichx.). 



2831. 21. C. U. Onagrarum, Lk. 32, Syn. Car. Circsese, 466, and Bethlehem. 



(466. 8. [Uredo] Circaese. Here and there on the leaves of 

 Circsea Canadensis.) 



There is no material or packet at Philadelphia to represent this 

 number, which is unfortunate, as no common rust exactly answers 

 the requirements of the record. The names employed for the rust 

 are of a European species, not known in America. Uredo Circcece 

 was established by Albertini and Schweinitz in their work on the 

 Lusatian fungi for the uredinia of what is now called Pucciniastriim 

 Circcece (Schum.) Schrot. The only rust on Circcca in this country 

 is Puccinia Circcccc Pers., which is so very unlike the one just re- 

 ferred to that it seemingly could not have been mistaken for it. 

 Although P. Circcca: possesses no uredinia, yet the young telial sori 

 are pale and in gross appearance might be so considered. The 

 record in both pubHcations appears to parallel the corresponding 

 records of P. Circcccc under no. 2938, and the most reasonable inter- 

 pretation appears to be that Schweinitz mistook the young stage 

 of P. Circcccc Pers. for a Uredo. 



