128 Wisconsin Academy of Sciences^ Arts and Letters. 



176. PucciNiA PHRAGMiTis (Schum.) (P. arundinacea Hedw.). 



Uredo and teleutospores on Phragmites communis Trin. Milwaukee, 

 Lapham; La Crosse, Paminel. Also collected at Hokah, Minn., by- 

 Mr. Pammel. 



177. PucciNiA MAYDis Carrad. (P. sorghi Schw.). 



Uredo and teleutospores on th:, leaves of Zea mays L., common, in 

 summer and fall. Madison. 

 Cooke has described an Asiatic species on Indian Corn, under the name 

 of P. purpurea, the teleutospores of which do not Appear distinct from 

 ours. The purplish discoloration of the leaves which it induces, and from 

 which it derives its specific name, is not characteristic, for some of the 

 Wisconsin specimens of P. maydis occur on decidedly purplish spots, and 

 Dr. Farlow informs me that Italian specimens of the same species are 

 often purple. An examination of Indian specimens of P. purpurea, for 

 which I am indebted to Dr. Farlow, shows, however, that the uredo spores 

 are rather larger and more oblong than those of our plant; and they are 

 accompanied by nearly colorless, thick-walled, c^avate paraphyses, which 

 are wanting in our species. 



178. PUCCINIA POLYGONi AMPHiBii Pers. (P. polygonorum Lk., P. amphibii 



Fckl.). 

 Uredo and teleutospores on Polygonum amphibium L. Madison; La- 

 Crosse, Pammel. Also collected at Brownsville, Minn., by Mr. 

 Pammel. 

 The parasite is very commonly attacked and greatly deformed by Dar- 

 lucafilum Cast. 



179. PucciNiA PRUNi SPINOSI (P.) (P. prunorum Link). 



Uredo and teleutospores on leaves of seedling Primus americana 

 Marsh, and on those of older plants of the same species and of P. 

 virgmiana L., in late summer and fall. Madison. 



3 80. PUCCINIA ARGENTATA (Schultz) (P. noK tangeris Cda.). 



Uredo and teleutospores on Impatiens fidva Nutt., in fall. Madison. 



As no aecidium accompanies this species in Europe, our Aecidium 

 impatientatum Schw. must be considered as probably belonging to some 

 heteroecismal species, although it occasionally occurs on the same leaves 

 with the Puccinia. 



P. argentata has also been found on Impatiens pallida Nutt., at Ho- 

 kah, Minnesota, by Mr. Pammel. 



181. PUCCINIA AMORPHAE Curtis. 



Uredo and teleutospores on leaves of Amorpha canescens Nutt. and 

 A. fruticosa L., common. Madison; La Crosse, Pammel. Also 

 collected at Hokah, Minn., by Mr. Pammel. 



