Preliminartj List of Wisconsin Parasitic Fungi. 121 



115. Phyllosticta apocyni, n. sp. 



On leaves of Apocynum cannabinum L. La Crosse, Pammel. 

 Spots circular, brown, about 3 mm. in diameter. Peritliecia small, 

 black. Spores colorless, oblong, 3.5-4x5-7 //, Tinicellular. 



116. Phyllosticta pyrina Sacc. 



On apple leaves, Madison . 



117. Phyllosticta, sp. 



On leaves of Primus aerotma Ehrh. Madison. 



Spots rounded or oblong, 3-8 mm. in diameter, brownish-red. Peritliecia 

 small, black. Spores ellipsoidal, hyaline, 3-4x7-8 jti, unicellular. 



Perhaps P. serotina Cke., of which I have not been able to examine 

 specimens. 



118. ASCOCHYTA, sp. 



On leaves of Silphium integrifoliiun Mich, and Vernonia noveb- 



o race Jis is Willd. Stoughton; La Crosse, Pammel. 



Spots brown, circular, about 3 mm. in diameter. Peritliecia brown, 100- 



120/i, slightly carbonized about the round orifice. Spores colorless; ovoid, 



oblong or reniform, frequently constricted at the middle; 3-5X7-14/^, with 



2-4 oil drops; when mature 3-celled. 



Resembles Phyllosticta sonchi Sacc. (Michelia, L, 141), except in the sep- 

 tate spores. 



119. AsCOCHYTA OXYBAPHI, n. Sp. 



On leaver of Oxybaphus nyctagiiieus Sweet. Stoughton. 

 Spots dark brown, roundish, 1-3 mm. Perithecia on the upper surface 

 of the leaf, small, brown, carbonized about the orifice. Spores colorless, 

 2-celled, 4 Xl0-17/<; sometimes constricted at the middle. 



120. AscocHYTA viOLAE Sacc. and Sp. 



On leaves of Viola pubescens Ait. Madison. 



121. ASCOCHYTA QUERCUS SaCC. & Sp. 



On leaves of species of Quercus; on round, white spots. Madison. 



121a. ASCOCHYTA AMPELINA SaCC. 



On small brown spots, on leaves of Vitis eordifolia Mx. Madison. 



122. ASCOCHYTA SPARTINAE, n. sp. 



On leaves ©f Spartina cynosuroides Willd., in autumn. Madison; La 

 Crosse, Pammel. 

 This species was found in small quantity, in company with Uromyees 

 aeuminatus Arthur, and causes small rounded pale yellow spots on the 

 leaves. The spores ooze out in flesh-colored masses, and are colorless, 

 straight or slightl}^ curved, usually a 'little narrower at one er^d than the 

 other. They average 3x35 jli- As a ru'e they are two-celled, but in a few 



