y= 
Freeman : PRELIMINARY LIST OF MINNESOTA ERYSIPHE. 425 
Pedicularts lanceolata Micux.; Lincoln, August, 1891, 
Sheldon 1522. | 
Bidens frondosa L..; Lincoln, August, 1891, Sheldon 
1516, September, 1893, Sheldon 6092, Hennepin, 
Oct., 1898, Freeman 50. 
Seymour reports this species on Erechtites hieracifolia and 
Nabalus sp. at Lake Minnetonka. 
3. Sphezrotheca mors-uve (Scuw.) B. & C. Grev. 4: 158. 
1876. 
On leaves of: 
feibes foridum L’HeEr.: St. Louis, July, 188, Holway 84 
(Spherotheca pannosa LeEv.); Kandiyohi, July, 1892, 
Frost 249. 
4. Erysiphe cichoracearum DC. Flore Franc. 2:274. 1815. 
On leaves of : 
Ambrosia artemisiefolia L.: Hennepin, 1890, MacMillan ; 
, Sheldon 7322; , Sheldon 6162 ; , Sheldon 
6131; Ramsey, Sept., 1898, Freeman 61. 
Ambrosia psilostachya DC. Traverse, Sept., 1893, Sheldon 
7081. 
Ambrosia triida L.: Pope, Aug., 1891, Taylor 1126; 
Brown, Sept., 1891; Sheldon 1243; Traverse, Sept., 
1893, Sheldon 7086; Goodhue, Aug., 1893, Anderson 
727; Ramsey, Sept., 1898, Freeman 62; Hennepin, 
Sept., 1898, MacMillan. 
fleliopsts scabra DunAL.: Kandiyohi, Aug., 1892, Frost 
5 anee 
Cnicus sp. indet.: Hennepin, 1890, MacMillan; Traverse, 
Sept., 1893, Sheldon 7072. 
Carduus sp. indet. : , Sheldon 7357; Hennepin, 1890; 
MacMillan. 
Aster puniceus L. var. lucidulus A. GRAY: Lincoln, Aug., 
1891, Sheldon 1507. 
Aster sp. indet.: Winona, Sept., 1888, Holzinger; Hen- 
nepin, Oct., 1898, Freeman 63; Hennepin, Oct., 1892, 
Sheldon 4123. 
Solidago canadensis Li. : , Sheldon 6082. 
Solidago sp. indet.: Hennepin, 1890, MacMillan; Waseca, 
June, 1891, Taylor 188 ; Hennepin, Oct., 1891, Sheldon; 
Goodhue, Aug., 1893, Anderson 814. 
