Freeman: PRELIMINARY LIST OF MINNESOTA ERYSIPHE. 429 
11. Uncinula necator (Scuw.) Burrityt. N. A. Pyren. 15. 
1892. 
On leaves of : 
Parthenocissus quinguefolia (L.) Puancn.: Ramsey, 
Sept., 1898, Freeman 59; Hennepin, Sept., 1898, F. 
K. Butters. 
12. Phyllactinia suffulta (REB.) Sacc. Mich. 2: 50. 1880. 
On leaves of : 
Tilia sp. indet.: Le Sueur, June, 1891, Sheldon64. Sey- 
mour reports this species on Betula ? at Lake Minnetonka. 
13. Podosphera oxyacanthe (DC.) D. By. Beitr. Morph. und 
Phys. der Pilze, Part 3, 48. 1870. 
On leaves of: 
Prunus sp. indet.: Hennepin, 1890, MacMillan. 
Crategus (7)sp. indet.: Le Sueur, June, 1891, Sheldon 
OA. ; Wabasha, Sept., 1893, Edna Porter. 
14. Microsphera russellii Ciintron, Rep. N. Y. St. Mus. 
26:80. 1874. 
On leaves of: 
Oxalis stricta L.: Winona, Aug., 1888, Holzinger. 
15. Microsphera ravenelii BERK. Grev. 4: 160. 1876. 
On leaves of: 
Lathyrus sp. indet.: Goodhue, Aug., 1892, Ballard 1152; 
Goodhue, Aug., 1893, Anderson 708. 
Seymour reports JZ. ravenelit Berk. on Lathyrus ? at 
Detroit, Minn. 
16. Microsphera quercina (Scuw.) Burrity, Bull. Ill. St. 
Lab. Nat. Hist. 2: 424. 1887. 
On leaves of : 
Quercus macrocarpa Micux.: Hennepin, 1890, Mac- 
Millan; Ramsey, Sept., 1898, Freeman 52. 
17. Microsphera symphoricarpi Howe, Bull. Torr. Club, 5: 3. 
1874. 
On leaves of: 
Symphoricarpos sp. indet.: Hennepin, 1890, MacMillan; 
Waseca, June, 1891, Taylor 615; Goodhue, Aug., 1893, 
Anderson 815 ; , Sheldon 7262 ; , Sheldon 7392. 
Symphoricarpos racemosa Micux.: Traverse, Sept., 1893, 
Sheldon 7084. 
Symphoricarpos symphoricarpos (L.) MacM. Traverse, 
Sept., 1893, Sheldon 7083. 
