Preliminanj List of Wisconsin Parasitic Fungi. 123. 



134 Septoria cannabina West. 



On leaves of Cannabis sativa Li., in autumn, Madison. Sometimes, 

 accompanied, by a Phoma, 

 The diseased hemp leaves were mai'ked by discolored spots very early in 

 the season, but little fruit was formed. 



135. Septoria aceris (Libert). 



On leaves of Acer dasycarj^um Elirh. Madison. 

 A compai'ison with the originstl Ascoxyta aceris Lib. (Crypt. Ard., No. 

 54), for which I am indebted to Dr. Farlow, shows very little difference be- 

 tween our plant and the European form. The spores, after their escape, lie 

 loosely over the lower surface of the leives. In both forms they are straight 

 or more comnaonly somewhat curved, usually 4-celled, and decidedly con- 

 strict':d at the septa, which, like the external walls, are very thin. The- 

 average size is 4X40-50 /<. Spots very small, yellow. 



136. Septoria astragali Desmaz. 



On leaves of Vicia americana Muhl. Stoughton, 



187. Septoria, sp. 



On leaves of Aquilegia canadensis L. La Crosse, Pammel. 

 Spots black'sh, elongated. Spores filif orm, 1 x 25 /« . Differs from S.. 

 anonones Dcsm. chiefly in the spots. Peazig and Saccardo (Atti R. Inst. 

 Veneto, Ser. 6, v. 2.) describe a species under the name S. aquilegiae, which 

 produces large black spots on leaves of Aquilegia atrata, which is possibly 

 the same, though I have seen only the abstract of their paper in the Bot. 

 Centralblatt, where spore-measurements are not given. 



138. Septoria coptidis B & C. 



On leaves of Coptis trifolia Salisb. Wisconsin, Lapham. In herb. 

 Curtis. 



139. Septoria phlocis Sacc. & Sp. 



On leaves of Phlox divaricata L. Madison. 

 Differs from the typical form in causing larger yellowish or dirty whit& 

 spots 5 mm. in diameter, which are often confluent. Perithecia numerous. 

 Spores colorless, filiform, 2X30-40 f.i, usually 2-septate. 



140. Septoria graminum Desm. 



On leaves of Setaria viridis Beauv. and on Poa annua L. Ithaca, 



Syene, Stoughton. 



The variet}' on Poa is quite destructive in spring, occurring on tne 



rachisof the panicle and on the floral envelopes, which are uniformly 



brown. Perithecia round, black, about 80 /ii in diameter, prominent. 



Spores hyaline, slightly clavate, obscurely septate; average size, 2.5x40 /<.. 



141. Septoria RUBi(Du by). 



On leaves of Rubus strigosus Mich. Madison. Syene. 



