Wilson-Seaver : Ascomycetes and Lower Fungi 271 



65. Physalospora aurantia Ellis & Everh. N. Am. Fungi <?J55; 



N. Am. Pyrenom. 304. pi. 27, f. 1-6. 

 On leaves of Astragalus sp., Kulm, N. Dakota. Coll. J. F. 

 Brenckle. 



The specimens distributed here conform well with the type. 



66. Plasmopara pygmaea (Unger) Schroter; Cohn, Krypt. Fl. 



Schles. 3 1 : 234. 1886. 

 Botrytis pygmaea Unger, Exanth. Pfl. 172. 1833. 

 Peronospora pygmaea Unger, Bot. Zeit. 5: 315. 1847. 



On Anemone caroliniana Walt., Fayette, Iowa', June 9, 1908. 

 G. W. W. 



When present this little fungus covers large areas of the host 

 with a very dense growth of conidiophores. 



67. Pleonectria Berolinensis Sacc. Michelia 1 : 123. 1878. 



Nectria Ribis Niessl, Verh. Nat. Ver. Brumm. 2: 114. 1865 

 (homonym). 



Pleonectria Ribis (Niessl) Karst. Medd. Soc. Fauna Fl. Fenn. 

 5: 42. 1879. 



On cultivated currants, Fargo 5 N. Dakota, summer, 1908. ,F. 

 J. S. 



68. Rhysotheca viticola (Berk. & Curtis) G. W. Wilson, Bull. 



Torrey Club 34: 407. 1907. 

 Botrytis viticola Berk. & Curtis ; Berkeley, Jour. Hort. Soc. 



London 6: 289. 1851 (hyponym). 

 Peronospora viticola Casp. Monatsb. K. Preuss. Akad. Wiss. 



1855: 331. 1855 (hyponym); de Bary, Ann. Sci. Nat. IV. 



20: 125. 1863. 



Plasmopara viticola Berl. & De-Toni ; in Sacc. Syll. Fung. 7 : 338. 

 1888. 



On Vitis vulpina L., Fayette, Iowa, June 25, 1909. 



This destructive fungus appears as spots on the leaves as a 

 fruit rot, or involves both stem and leaf of the new growth 

 covering them with a dense mould-like growth and causing some 

 hypertrophy. 



