614 



Strninata solitary iind scattered or 2-3 subseriately approximate, 

 crmnpcnt ;m<l bordered by the ruptured epidermis, orbicular-pulvinate 

 or more or less elongated, reaching as much as 5 mm. long, rather 

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

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

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

 tate, gradually narrowed above, 8-spored, 50-60x8-1 \ p. Sporidia 

 biseriate, narrow-clavate, sul (inequilateral, uniseptate below the middle, 

 hyaline, 17-20x4-4|>. . 



On dead stems of Serberis, New England. 



D. Muhlenbergije, Ell. Bull. Torr. Bot. Club, VIII, p. 74. 



Exsicc. EH. N. A. F. 482. 



Stromata scattered or gregarious and subconfluent, subelongated- 

 tuberculiform, or hysteriiform, minute (J-J 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 

 >tromata, 2-4 in the larger, white inside. Asci clavate, rounded 

 above, paraphysate, 8-spored, 50-75 x 15-20 p., 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 {JL. 



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



Prof. Niessl in Hedwigia, May, 1883, refers this to Z/eptosphceria 

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

 having carefully reexarnined abundant and good material, we find the 

 ~j>oridia as here noted, and though the scanty stroma often gives the 

 appearance of perithecia, a section shows the genuine ascigerous cells 

 characteristic of the Dothideacece. 



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



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

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

 l-3-septate r brown, 50 x 15 //." 



On twigs of Corylus rostrata, California (Harkness). 



Species imperfectly knoion and doubtful. 

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



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



"Stroina black, erumpent, roundish or oblong, often confluent. 



