PreUminari/ List of Wisconsin Parasitic Fungi. 131 



Probably several of the aecidia referi-ed to Aecidium compositariim Win- 

 ter belong to this species. 



195. PUCCINIA HELIOPSIDIS Schw. 



Uredo an<i teleutospores on Venionia fasciculata Miclix. La Crosse, 

 Pammel. 

 Scarcely distinct. 



196. PUCCINIA TANACETI D C. 



Uredo and teleutospores on Artemisia clracuncidoides Pursh. Madison. 



197. Puccini A helianthi Schw. 



Aecidium {A. helianthi Schw.) on Hetianthus strumosus L. Uredo 

 and teleutospores common on H. grosse-serratus Mart., H. annuus 

 L. and H. stntmosus L. Madison, Syene; La Crosse, Pammel. 

 The broader uredospores and the paler apex of the teleutospores distin- 

 guish this from the forms of P. tanaceti, with which Winter unites it, that 

 I have been aole to examine. 



198. PUCCIKIA TIOLAE (Sclium). 



Aecidium on Viola cucullata Ait., V. jnibescens Ait. and V. 

 canadensis L. Uredo and teleutospores on V. cucullata Ait., 

 V. blanda Willd. and V. xjuhescens Ait. Madison, Stoughton; 

 Delton, Devil's Lake, Kirkland, Pammel. 



199. Puccini A rubigo vera (D C.) (P. straminis Fckl.). 



Uredo and teleutospores common, on Hordeum juhatum L. 

 Aecidium asperifolii Pers., which is said to belong to this species, and 

 which occurs on various Boragineae, has not been found yet. 



300. PUCCINIA GRAMINIS PerS. 



Aecidium (Aecidium herheridis Gmel.) very common in spring, on 

 Berberis vulgaris L., wherever the barberry is cultivated. Uredo 

 and teleutospores abounding on many grasses, of which the fol- 

 lowing have been collected : Triticum vulgare Vill., Arena sativa 

 L., Phleum pratense L., Hordeum juhatum L., Agrostis vulgaris 

 With., ^4. scabra Willd., Briza maxima L., and Elymus, sp. Ithaca, 

 Madison, and reported from many other localities. 

 The uredo apj^ears sparingly in the spring, before aecidia have developed 

 on the barberry, and there is reason for believing that the mycelium hi- 

 bernates in winter grain and perennial grasses. Although the barberry 

 does not grow wild in the state, it is cultivated in sufficient abundance to 

 stock the state with wheat rust in favorable reasons. The teleutospores are 

 found in fall and winter, and are especially noticeable on the sheaths of 

 grasses, after their death. Attempts made in my laboratory to infect the 

 very young leaves of wheat seedlings with the sporidia from germinating 

 teleutospoi-es have thus far entirely failed, though Plowright claims to 



