96 Wisconsin Academy of Sciences, Arts, and Letters. 
conidia are about 6 microns in diameter and semen 
times 100 microns in length. 
586. Cercospora caricixa, Ell. k Deam. 
On Car ex rosea, Schkubr. Racine. Carex arc - 
tat a, Booth Vilas county. Rather abundant over 
a small area, at each of these stations. 
587. Cercospora comari, Pk. 
On Potentilla palustris, Scop. Vilas county. 
588. Cercospora desmodii, Ell. k Kell. 
On Desmodium acuminatum, DC. Somers. 
589. Cercospora diffusa. Ell. k Evht. 
On Physalis sp. on the prairie near Racine. 
590. Cercospora gerardiae, Ell. k Dearness. 
On Gerardia grandiflora, Somers. This has been 
referred to Cercospora clavata (Gerard) Pk.; 
which it much resembles. It appears, however, to 
be confined to Dasystoma. 
591. Cercospora gxapelaleacea, Cke. (?). 
On Gnaphalium polycephatum, Michx. Racine. 
I have followed Earle (Bull. T'orr. Bot. Club, 25, 
366. 1898.), in the disposition of this species. 
592. Cercospora heterospora. Ell. k Evht., ined. 
On Euphorbia corollata, L. Racine. 
593. Cercospora eippiae. Ell. k E'vht. 
Mr. S. C. Wadmond called my attention to this 
fungus on herbarium specimens of Lippia lanceo- 
lata , Michx., collected by him at Racine. 
594. Cercospora dytiiri, (West.) Kiessl. 
On Lythrum alatum, Pursh. Racine. 
595. Cercospora majanthemi, Eckl. 
On Maianthemum Canadense, Desf., Pelican 
Lake. Differs from the type in its smaller size,— 
about one-half. More typical specimens have since 
been collected in Vilas county. 
