614 



Stromata solitary and scattered or 2-3 subseriately/ approxiniate, 

 erumpent and bordered by the ruptured epidermis, orbicular-pulvinate 

 or more or less elongated, I'eaching as much as 5 mm. long, rather 

 flattened above and often depressed in the center, black-punctate 

 from the projecting ostiola. Perithecia numerous, subglobose, 240- 

 260 // diam., narrowed above into the ostiola. Asci cylindrical, stipi- 

 tate, gradually narrowed above, 8-spored, 50-60 x 8-1 1 /i. Sporidia 

 Ijiseriate, narrow-clavate, subinequilateral, uniseptate below the middle, 

 liyaline, 17-20 x4-4i>. 



On dead stems of Berberia, New England. 



D. MuhleuMrgia), Ell. Bull. Torr. Bot. Club, VIII, p. 74. 



Exsicc. EU. N. A. F. 482. 



Stromata scattered or gregarious and subconfluent, subelongated- 

 tubcrculiform, or hysteriiform, minute {{-^ mm.), not penetrating 

 deeply, covered by the blackened epidermis which opens with a 

 narrow, longitudinal cleft or is pierced by the short, acute ostiola. 

 Ascigerous cells few, 150-200 // diam., often but one in the smaller 

 f^ti'omata, 2-4 in the larger, white inside. Asci clavate, rounded 

 above, paraphysate, 8-spored, 50-75 x 15-20 //, narrowed below into a 

 stipe-like base. Sporidia biseriate or inordinate, oblong-fusoid, hya- 

 line and granular at first, becoming yellowish and uniseptate, slightly 

 constricted at the septum, narrowed and subacute at the ends, slightly 

 curved, 15-20 x 4^6 p.. 



On dead culms of Muhlenbergia, Newfield, N. J. 



Prof. Niessl in Hedwigia, May, 1883, refers this to Leptosphmriu 

 and finds the sporidia 20-25 x 6-8 //, 4-5-celled and hyaline, but after 

 iiaving carefully re'c.Yarained abundant and good matejial, we find the 

 sporidia as here noted, and though the scanty stroma often gives the 

 appearance of perithecia, a section shows the genuine ascigerous cells 

 characteristic of the Dothideacem. 



1). corylina, Ck. & Hark. Grev. IX, p. 87. 



"Erumpent, orbicular, depressed, black, same color inside. Asci 

 ample, clavate. Sporidia obtuse, lanceolate, constricted in the middle, 

 1-3-septate, brown, 50x 15 pt." 



On twigs of Corylus rostrata, California (Harkness). 



Species imperfectly hnowoi and doubtful. 

 D. Linderse, Ger. Bull. Torr. Bot. Club, V, p. 40. 



Exsicc. EU. & Evrht. N. A. F. 2d Ser. 2126. 



"Stroma black, erumpent, roundish or oblong, often confluent, 



