Davis — Parasitic Fungi in Wisconsin — 717. 265 



Septoria cyljndrospora n. sp. 



Pycnidia scattered, black, globose to lenticular with cellular 

 walls, 125-200/1. in diameter; sporules hyaline, cylindrical, 

 straight or slightly curved, 18-30 x 2-3/*. On calyces, bracts, 

 leaves, and upper part of stems (especially on the south side) of 

 Pedicularis canadensis. Solon Springs, June 1914. Under io- 

 dine the sporules show a median division. I have not seen Rhab- 

 dospora sceptri Karst. of which this may be only a form differing 

 in the straight cylindrical sporules. This might be referred to 

 Ascochyta. 



Septpria xanthiifolia Ell. & Kell. On Iva xanthifolia. Alma. 



PJileospora celtidis Ell. & Mart. On Celtis occidentalis. Wy- 

 alusing. In this collection the sporules attain a length of 100/t 

 or more and become 8 or more septate. 



Gloeosporium trifolvi Pk. On Trifplium pratense. Minocqua. 

 Abundant at one station. 



Collet otrichum graminicolum (Ces.) Wilson. On leaves of 

 Echinochloa crusgalli. Devils Lake. Setae 50-100 x 5-6/a, spor- 

 ules 16-24 x 3y 2 -6n. Collected also at Alma and Maiden Rock. 



COLLETOTRICHUM SORDIDUM II. Sp. 



Spots on the upper surface of the leaves varying from orbicu- 

 lar to irregular, light brown with a darker margin, 5-15 mm. in 

 diameter to indefinite and more or less confluent into indefinite 

 areas, cinereous above from loosened cuticle, on the lower leaf 

 surface indefinite ; acervuli epiphyllous, scattered, small, flat ; 

 sporules hyaline, cylindrical with rounded ends, straight, 21-33 

 x 6/x ; setae dark brown to black, mostly incurved, 50-75 x 3-6/t 

 with a septum near the base below which the seta is abruptly 

 dilated. The affected portions of the leaves become quite fri- 

 able. On Menispermum canadense, Wisconsin river bottom op- 

 posite Bridgeport, July 31, 1914. As there is a possibility that 

 this may connect with Gloeosporium sordidum Speg. of South 

 America I have used the same specific name. 



Didymaria astragali (EVl. &Hol.) iiwJgQBub. {Ramularia astrag- 

 ali, Ell. & Hoi.) On leaves of Astragalus canadensis. St. Croix 

 Falls. 



