Davis—Parasitic Fungi of Wisconsin. 
759 
691. Cercospora mississippiensis Tracy & Earle. 
On Smilax hispUda Muhl. Racine. In these speci¬ 
mens the spots lack the pallid outer margin. 
692. Cercospora subsanguinea E. & E. 
On Maianthemum canadense Desf. Vilas county, Peli¬ 
can Lake and La Pointe. The two former speci¬ 
mens were erroneously recorded as Cercospora 
maianthemi (Eckl.) Sacc. See No. 595 in this 
list. 
693. Cercospora viticola Sacc. 
OnE itis riparia Michx. Racine. 
694. Cylijstdrosporium betueae n. sp. 
Spots subcircular, immarginate, cinnamon brown be¬ 
neath darker above, peripheral portion often green, 
3—8 mm in diameter; acervuli hypophyllous, pale 
brown; conidi a bacillary, straight or somewhat 
curved, obtuse, 25—40 X 1%—2 microns. On 
leaves of Betula pumila L. Sullivan. July, 1906. 
Possibly a form of Septoria betulae (Lib.) West, 
but the sporogenous layer is disciform. 
695. Cylixdrosporium circixans Wint. 
On Sanguinariaa canadensis L. Adams county. 
696. Cylixdrosporium clematidis E. & E. 
On Clematis Virginiana L. Somers. Locally abun¬ 
dant. Exuded conidia forming a white powder 
on the surface of the leaf or in cirri. 
697. Cylixdrosporium ribis sp. nov. 
Spots subcircular, lurid or tawny with a narrow dark 
border, 2—6 mm in diameter; acervuli 30—50 
microns in diameter; sporules discharged on the 
upper surface of the leaf, curved, often attenuate 
! ' upwards, 50—80 X 1% microns. On leaves of 
Ribes triste Pall, and Ribes prostratum L’LIer. 
La Pointe. On Ribes sp. indet. (gooseberry).' 
Racine. July and August. This may prove to 
be Septoria sibirica Thum. with undeveloped 
; pycnidial wall. 
