118 Wisconsin Academy of Sciences, Arts and Letters. 



86. OvuLARiA OBLIQUA (Cke.) {Ramularla obovata Fckl., Peronospora 



obliqua Cke.). 

 Common, in spring, on leaves of Rumex. Madison. 



87. OvuLARiA IRREGULARE (Pk.) (O. isaHoides Sacc, Oidium irregidare 



Pk.). 

 On the fruit of Stapliylea trifolia L. La Crosse, Pamcnel. 



88. OVULARIA PYROLAE, n. sp. 



On leaves of Pyrola rotundifolia L. Stoughton. 

 Spots circular, dark. Spores colorless, round -oval to oblong, frequently 

 acute at one end, unicellular. Usually 4X13 /«; extremes noted: 3.5-6X 

 6-17 M- 



89. FusiDiUM RAVENELIANUM Thuem. {RamidciHa desmodii Cke., Fusispo- 



rium pubescens B. & C). 

 On leaves of a species of Desmodiiim and au Astragalus. Madison; La- 

 Ci'osse, Pammel. 



90. FusiDiUM PTERiDis Kalchbr. 



On fronds of Aspidium viarginale Sw. Kirkland, Pammel. 



91. Cercosporella cana (Pass.) (Fusidium canum Pass.). 



Common, on leaves of Erigeron canadense L., in summer and fall.. 

 Madison. 

 What appears to be the same thing was found at La Crosse on the rad- 

 ical leaves of some Solidago. 



92. Cercosporella APOCYNi E. &K. 



On leaves of Apocymim cannabinum L. La Cro-se, Pammel. 



93. Ckrcospora apii Fres., var. pastinacae Farow, in herb. 



Common, on leaves of Pastinaca sativaJj. Madison; La Crosse^ 

 Pammel. 

 Perhaps from Cercosporella pastinacae Karst., as described in Hedwigia,, 

 1884, p. 63, is not distinct. 



94. Cercospora betaecola Sacc. 



On Beta vulgaris L. Ithaca. 

 Very destructive to beet leaves, in fall. 



95. Cercospora chenopodii Fres, 



Very abundant, on leaves of Chenopodium album L., in midsummer 

 and later. Madison; La Crosse, Pammel. 



96. Cercospora racemosa Ell. and Mart., ined. 



On Teucrium canadense L. La Crosse, Pammel. 

 Scarcely a good Cercospora. lam indebted to Dr. Farlow fur the de- 

 termination. 



