560 



/- 



orbicular or oval base. In-own inside, with an elliptical or suborbicular 

 disk, at first brown, at length black (from the discharged sporidia), 

 erumpent, rngulose. Perithecia 10-40 in a stroma, sunk to the bottom 

 of the stroma, inordinate, densely crowded, subglobose or angular 

 from compression, black, 600-700 /j. diam. Ostiola very long, thick. 

 rugose-tuberculose, thickened at the apex, very black, piercing the 

 disk and exserted 1 mm. above it. Asci cylindrical, very long-stipi- 

 tate, 8-spored, p. sp. 70-90 x 6-7 p.. Paraphyses filiform, very slender, 

 guttulate. Sporidia uniseriate, oblong, rounded at the ends, straight 

 or curved, septate in the middle, not constricted at the septum, pale 

 brownish-black, 8-15x4-5 p.. 



On dead white birch, New York State (Peck). 



\Ye have seen no specimens and take the above diagnosis from 

 Sacc. Syll. 



V. Robinije, (Schw.) 



Sphcsria Robinicz, Schw. Syn. Car. 61, Fr. S. M. II, p. 352. 



Forming tubercles an inch long and \ of an inch across, sunk to 

 the wood, the upper part narrowed, erumpent, flattish, opake. Peri- 

 thecia sunk to the bottom of the stroma, crowded, ovate-oblong, rather 

 small, shining, the long necks rising to the surface and terminating in 

 smooth, umbonate, distant ostiola either short or 1-2 lines long. Spo- 

 ridia (sec. Cke. Grev. XIII, p. 37) elliptical, uniseptate, brown. 20 // 

 long. 



On dead limbs of Hobinia pseudacacia, Carolina (Schw.). 



V. melastroina, (Fr.) 



Sphceria melastroma, Fr. S. M. II, p. 399, Schw. Syii. N. Am. 1358. 

 EJxsicc. Fr. Scl. Suec. No. 223. 



Has the habit of Diatrypella verruccefbrmis, but lesss prominent, 

 and conceptacle entirely cortical. Perithecia about 7, suberect, 

 crowded, deeply immersed, vertically collapsing. Disk erumpent 

 through the angularly cleft epidermis, formed from the inner bark, but 

 the surface smooth, opake, blackened. The ostiola pierce the disk but 

 are not exserted. 



On bark of Ulnms, Carolina (Schw.). Sporidia (sec. Cke.) ellip- 

 tical, brown, uniseptate, 22 x 14 ft. 



V. saliciua, E. & E. Proc. Acad. Nat. Sci. Phil. Pa. July, 1890, 



p. 236. 



Stroma subovate, 2-2| mm. diam., buried in the bark, the upper 

 part light-colored within, and projecting so as to form a brownish-black, 



