550 MINNESOTA BOTANICAL STUDIES. 



26. P. sorghi SCHWEIN. Syn. Fung. Am. Bor. 295. No. 2910. 



1831. 



On Zea mays L. : St. Louis, (II) Jy. 1886, Holway 136; 

 , (II) 1893, Sheldon 6148; Brown, (II) Jy. 1891, 



Sheldon 1065. 

 Sorghum sp. indet. : Hennepin, (III) O., 1890, Sheldon 



574 2 - 



27. P. emaculata SCHWEIN. Syn. Fung. Am. Bor. 295. No. 



2912. 1834. 



On Panicum capillare L. : Lincoln, (III) Ag. 1891, 

 Sheldon 1530; Traverse, (III) S. 1893, Sheldon 7375 

 7376. 



F. MlCROPUCCINIA. 



28. P. thalictri CHEV. Fl. Paris, i : 417. 1826. 



On Thalictrum sp. indet. : Cass, (III) Jy. 1893, Ander- 

 son 573. 



G. LEPTOPUCCINIA. 



29. P. asteris DUBY, Botan. Gallic. 2 : 888. 1828. 



On Aster macrophyllus L. : St. Louis, Jy. 1886, Holway 



37 ; Cass, Jy. 1893, Ballard 1652. 

 Aster sagittlfolius WILLD. : Houston, Ag. 1899, Lyon 



Aster sp. indet. : Lake, Jy. 1886, Holway, 273. 

 There is a great similarity in the spots, sori and spores of 

 P. asteris on A. macrophyllus to those of P. xanthti Schwein. 



30. P. circaeae PERS. Tent. Disp. Meth. 39. 1797. 



On Circcea alpina L. : St. Louis, Jy. 1886, Holway 214. 

 Circaa lutetiana L. : Winona, Jy., 1888, Holzinger 206 



and 132 ; Pope, Jy. 1891, Taylor 887. 

 Circaa sp. indet. : Cass, Jy. 1893, Ballard 1655. 



31. P. ornata ARTH. & HOLW. Rep. Bot. Wk. in Minn, for year 



1886, 3: 30. 1887. 

 On Rumex britannica L. : St. Louis, (III) Jy. 1886, Hol- 



way 223. 

 Rumex sp. indet. : Crow Wing, (III) Ag. 1890, MacMillan 



and Sheldon. 



H. LIFE HISTORIES IMPERFECTLY KNOWN. 



32. P. variolans HARK. Bull. Calif. Acad. Sci. i : 35. 1884. 

 On Eriocarpum spinulosum (NuTT.) GREENE : Traverse, 



(III) S. 1893, Sheldon 7101. 



