Davis — Parasitic Fungi in Wisconsin — II. 97 



in Entyloma nymphaeae (Cunn.) Sgtch. (Trans. Wis. Acad. Sci. 

 Arts & Letters ii;176) and is probably correlated with the 

 aquatic habit. It seems to be of service in increasing the flotation 

 of the sporidia and the likelihood of their catching upon the 

 host. That this method of detachment is not constant, however, 

 is indicated by the fact that Setchell does not mention it in his 

 account of the germination of the spores of this species but re- 

 fers to the sporidia as falling from the promycelia. (Bot. Gaz. 

 19:188 [1894].) 



Additional Hosts. 



Not previously recorded as bearing the fungi mentioned in 

 Wisconsin. 



Peronospora parasitica (Pers.) Tul. — On Arabis hirsuta. Fish 

 Creek. 



Syncliytrium aureum Schroet. A few galls on Caltha palus^ris 

 apparently caused by this fungus were collected at Wausaukee 

 in August, 1913, but the material is scanty and immature. 



Plasmopara pygmaea (Ung.) Schroet. Conidia and oospores 

 on Hepatica triloba. Afton. 



Peronospora grisea Ung. On Veronica americana. Ellison 

 Bay. 



Sphaerothcca mors-uvae\ (Schw.) B. &. C. on Ribes gracile. 

 Detroit Harbor. 



Microspliaera alni (Wallr.) Wint. On Alnus incana. Wau- 

 saukee. Perithecia sparse. 



Dimerosporium collinsii (Schw.) Thuem. On Amelanchier, 

 oblongifolia. Merrimack, May 3rd, 1913. (W. N. Steil). On 

 leaf of preceding year but ascospores not yet formed. 



Exoascus confusus Atk. On fruit of Prunus virginiana. Stur- 

 geon Bay. 



Exoascus i7isititiae Sadeb. On Prunus pennsylvanica. Stur- 

 geon Bay, causing witches brooms. 



Exoascus cerasi (Fckl.) Sacc. On Prunus Cerasus (cult.) 

 Wyalusing. 



7— s. A. 



