Freeman: MINNESOTA UREDINE^E. 545 



Viola blanda pal it str if or mis A. GRAY : Hennepin, (I) My. 

 1891, Sheldon 5961. 



Viola hlauda uiiuvna (LE CONTE) B.S.P. : Crow Wing, 

 (I) Je. 1892, Sheldon 2150; Mille Lacs, (I) Jy. 1892, 

 Sheldon 2705^. 



Viola scahrinscula (T. & G.) SCHWEIN. : Wright, (I) My. 

 1900, Freeman 592. 



Viola sp. indet. : Hennepin, (II, III) S. 1889, MacMillan ; 

 Brown, (III) Jy. 1891, Sheldon 845 and 850; Henne- 

 pin, (III) O. 1892, Sheldon 4090; - - , (III) S. 1893, 

 Sheldon 7242. 



8. P. menthae americana BURRILL, Bull. 111. St. Lab. Nat. 

 Hist. 2 : 189-191. 1885. 



The echination, which distinguishes this form from the Euro- 

 pean form, is in almost all specimens most marked at the apex 

 of the teleutospores. Many teleutospores are almost smooth 

 at the base. European teleutospore specimens are sometimes 

 slightly echinate at the apex. 



On Monarda fistulosa L. : Chisago, Ag. 1883, Arthur; 

 Winona, (III) Ag. 1888, Holzinger 42 ; Winona, (II, 

 III) Ag. 1888, Holzinger; Hennepin, (III) 1890, Mac- 

 Millan; Hennepin, (III) O. 1893, Sheldon 4096; Trav- 

 erse, (III) S. 1893, Sheldon 7175 ; Winona, (III) S. 

 1893, Edna Porter; Hennepin, (III) S. 1898, MacMil- 

 lan; Houston, (III) Ag. 1899, Lyon 321. 

 Koellia virginiana (L.) MAcM. : Winona, (II, III) Ag. 



1888, Holzinger 164. 



Mentha canadcnsis L: Hennepin, (II, III) Ag. 1883, Ar- 

 thur; St. Louis, (II, III) Jy. 1886, Holway 236; Lin- 

 coln, (II, III) Ag. 1891, Sheldon 1419 ; Ramsey, (II) Je. 

 1899, Freeman 458; Ramsey, (II, III) S. 1898, Free- 

 man. 



Mentha sp. indet. : , (II, III) 1893, Sheldon 6070 and 



7019; Traverse, (II, III) S. 1893, Sheldon 7382. 



9. P. tanaceti DC. Fl. Fr. 2: 222. 1815. 



The Puccinia on Helianthus differs from that on Tanacetum 

 only in having a slightly broader teleutospore. This is espe- 

 cially true of the distal cell. Culture experiments are necessary 

 to separate these forms. 



On Artemisia dracunculoides PURSH : Houston, (II, III) Ag. 

 1899, Lyon 391 ; Traverse, (III) S. 1893, Sheldon 7311. 



