Freeman : PRELIMINARY LIST OF MINNESOTA ERYSIPHE^E. 429 



11. Uncinula necator (ScH\v.) BURRILL. N. A. Pyren. 15. 



1892. 

 On leaves of : 



Parthenocissus quinqiiefolia (L.) PLANCH. : 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, Sheldon 64. Sey- 

 mour reports this species on Betula ? at Lake Minnetonka. 



13. Podosphasra oxyacanthae (DC.) D. BY. Beitr. Morph. und 

 Phys. der Pilze, Part 3, 48. 1870. 



On leaves of : 



Prunus sp. indet. : Hennepin, 1890, MacMillan. 

 Crat&gus (?) sp. indet.: Le Sueur, June, 1891, Sheldon 

 62. ; Wabasha, Sept., 1893, Edna Porter. 



14. Microsphaera russellii CLINTON, Rep. N. Y. St. Mus. 

 26 : 80. 1874. 



On leaves of : 



Oxalis stricta L. : Winona, Aug., 1888, Holzinger. 



15. Microsphaera ravenelii BERK. Grev. 4: 160. 1876. 

 On leaves of : 



Lathyrus&p. indet. : Goodhue, Aug., 1892, Ballard 1152; 



Goodhue, Aug., 1893, Anderson 708. 

 Seymour reports M. ravenelii Berk, on Lathyrus ? at 



Detroit, Minn. 



16. Microsphaera quercina (Scnw.) BURRILL, Bull. 111. St. 

 Lab. Nat. Hist. 2 : 424. 1887. 



On leaves of : 



^jiercus macrocarpa MICHX. : Hennepin, 1890, Mac- 

 Millan ; Ramsey, Sept., 1898, Freeman 52. 



17. Microsphaera symphoricarpi HOWE, Bull. Torr. Club, 5: 3. 



1874. 

 On leaves of : 



Symphortcarpos sp. indet.: Hennepin, 1890, MacMillan; 



Waseca, June, 1891, Taylor6i5 ; Goodhue, Aug., 1893, 



Anderson 815 ; , Sheldon 7262 ; , Sheldon 7392. 



Symphortcarpos racemosa MICHX. : Traverse, Sept., 1893, 



Sheldon 7084. 

 Symphortcarpos symphoricarpos (L.) MAcM. Traverse, 



Sept., 1893, Sheldon 7083. 



