Davis — Parasitic Fungi in Wisconsin — I. 85 



Ustilago lorentziana Thuem. which occurs at Madison on Hor- 

 deum jubatum and which was recorded in the 4th supplementary 

 list seems to have been omitted from the provisional list. 



Entyloma linariae Schroet. var. veronicae Wint. The newly- 

 formed spores of this smut were found to germinate readily in 

 May but to gradually lose the power as the season progressed as 

 had been found to be the case with E. floerkeae Holw. (2nd 

 suppl. list, No. 487). The promycelial spores are usually two 

 (1-4) in number, 15-20x3^.. 



Material wintered outdoors (May to May) germinated the fol- 

 lowing spring in the same manner. 



Additional Hosts. 



Synchytrium aureum Schroet. 



In September, 1912, this was found at Millston, Jackson 

 county on Lycopus virginicus, Lysimachia terrestris and leaves 

 of blackberries that I have referred to Rubus hispidus and Ru- 

 bus vttlosus. The infection was sufficient to indicate that each 

 of these plants are normal hosts of the organism in that locality, 

 Rubus villosus being least affected. No success attended spe- 

 cial efforts to find other hosts. In 1913 it was collected at Athel- 

 stane, Marinette Co., on Rubus hispidus but on no other host. 

 In 1892 Syncliytrium occurred rather abundantly in a bit of 

 woodland near Berryville on Viola pubescens and Geum cana- 

 dense and during the same season it was collected at Somers, 

 but a few miles distant, on Ranunculus recurvatus. The infec- 

 tion of the latter was limited and I have not seen it since on 

 this host. It was' collected again at Berryville in 1894 soon 

 after which the station was cleared and put under cultivation. 

 In 1902 a collection on Viola pubescens was made at the Somers 

 station. In 1907 considerable infection of the same host was 

 observed at a station intermediate between the other two and 

 during the same season very limited infection of Prenanthes 

 alba at this station and of Pedicularis canadensis near Ra- 

 cine was observed. The infection of the two latter hosts ap- 

 peared to be accidental and temporary, the organism failing to 

 get a permanent foothold. At Millston some of the affected 

 leaves of Lycopus bore considerable hypertrophies often sur- 

 rounded by purple discoloration but usually there was little dis- 



