132 Wisconsin Academy of Sciences, Arts and Letters. 



have succeeded. If this were possible it would entirely do away with the 

 necessity for the intervention of the barberry, which, as has been said, is 

 questionable, for other reasons. 



201. PUCCmiA CORONATA Cda. 



Uredo and teleutospores very common, on Dactylis glomerata L., 

 Avena sativa L., etc. Madison. The common oat rust in this vi- 

 cinity is the uredo of this species. 

 Aecidium rhamni Gmel., which is held to be a state of this species, has 

 not yet been found. It should be looked for on species of Rhamnus. • 



202. PucciNiA CARICIS (Schum.). 



Aecidium {Aecidium iirticae Schum.) common, in spring, on Urtica 

 gracilis Ait. Uredo and teleutospores on Cyperiis schweinitzii 

 Torr., and other sedges, in fall and winter, common. Madison; 

 La Crosse, Honey Creek, Pammel. 



203. Phragmidium subcorticium (Shrank) (P. mucronatum Link). 



Uredo and teleutospores on leaves of Rosa jyarviflora Ehrh., and on 

 cultivated roses. Madison. 



204. Phragmidium speciosum Fries. 



Teleutospores on petioles and stems of Rosa parviflora Ehrh., in fall 

 and winter. Madison. 

 Uredo miniata P., or a form not to be distinguished from it, sometimes 

 occurs on the same plant in spring unler suspiciously similar circumstan- 

 ces, but a connection between the two specif has not yet been traced. 



205. Phragmidium rubi idaei (Pars.) (P. effusum Fckl., P. gracile Grev.). 



Uredo and teleutospores on leaves of Rubus occidentalis Ij. , in au- 

 tumn. Madison. 

 This is the species distributed in Ellis' North American Fungi, No. 282, 

 under the name of P. incrassatum Lk., var. gracile. The iiredo which has 

 been associated with it is very abundant, scattered over the lower surface 

 of the leaves. It may prove to belong to P. rubi (Pers.) (P. bidbosum 

 Strauss). 



206. Phragmidium fragariae (D C.) (P. tMarticulatum, B. & C, P. obtu- 



sum. P.). 

 Uredo (Uredo potentillarum D C.) on leaves of Potentilla canadensis 

 L. Madison; La Crosse, Pammel. 



207. Gymnosporangium macropus Link. 



Teleutospores common on cultivated Junipeims virginiana L., in 

 May. Madison, Syene; Oconomowoc, Lapham; Sauk City, La- 

 Crosse, Pammel. 



