Davis — Parasitic Fungi in Wisconsin — II. 107 



Gymnosporangium corniculans Kern. Galls on Juniperus 

 horizontalis on which were some dried teliospores agreeing with 

 those of this species were collected on the lake Michigan beach 

 east of Sturgeon Bay in June. 



Hyalopsora aspidiotus Pk. Uredinia on Pliegopteris Dryop- 

 teris. Detroit Harbor. 



M clamp sor a farlowii (Arth.) n. comb. (N ecium farlowii Arth.) 

 On young twigs and leaves of Tsuga canadensis. Detroit Har- 

 bor. 



Mclampsora arctica Rostr. Aecia on leaves of Abies balsamea 

 supposed to be of this species have been collected at Brule (E. 

 M. Gilbert) Fish Creek and Ellison Bay. The reference to this 

 species is based on the inoculation experiments of Fraser (Myco- 

 logia 4:187, 5:238). The uredina and telia have not yet been 

 recognized in Wisconsin. 



Aecidium xantlioxyli Pk. On Zanthoxylum americanum. 

 Mazomanie (R. A. Harper & G. M. Reed) Glen Haven. 



Aecidium proserpinacae B. & C. On Proserpinaca palustris. 

 Detroit Harbor. Abundant on the marshy border of a pond on 

 Washington Island. 



