462 



nent, crowned with a very small disk, which penetrates the epidermis, 

 1 nit hardly rises above it. Perithecia 4-12 in a stroma, subcircinate, 

 buried in the unaltered substance of the bark, crowded, small, globose, 

 with very small, short, black and shining, crowded ostiola piercing the 

 small, flat disk. Asci narrow-clavate, sessile, 24-28 x 4 (i. Sporidia 

 biseriate, allantoid, hyaline, 6-7 xl| ft. 



On dead twigs of Castanea and Big?ionia, Carolina (Curtis), on 

 dead limbs of Cornus, Canada (Dearness). 



This appears to differ from V. ceratophora, Tub, in its smaller 

 disk, and perithecia only 4-12 in a stroma. 



V. lutescens, Ell. Bull. Torr. Bot. Club. IX, p. 1 11. . 



v Exsicc. EH. N. A. F. 876. ' ** 



Stromata cortical, dark brown inside, conical, about Jfmm, broad 

 at base, not circumscribed, thickly scattered over the matrix. Peri- 

 thecia 10-20, subcircinate in the bottom of the stroma, small (J mm. 

 or less), necks converging, slender, with their short-eylindrical, stout, 

 obtuse, smooth or sometimes substellate-furrowed, soon broadly and 

 irregularly perforated ostiola erumpent around the conic-convex, sub- 

 coriaceous tobacco-brown disk. Asci lanceolate-clavate, 35 x 5-6 /i. 

 Sporidia subbiseriate, allantoid, hyaline, 5-7 x 1J p.. Spermogonium 

 occupying the center of the stroma, pierced above, lined inside with 

 innumerable, slender, simple or branched basidia, bearing minute (4-5 

 x 1 fi)\ hyaline spermatia. 



On dead limbs of Quercus coccinea, Newfield, N. J. 



The wood beneath the stroma is generally tinged with yellow. 

 This differs from V. clausa, C. & E. in its smaller sporidia and smaller 

 perithecia. 



V. Pini, (A. & S.) 



Sphtzria Pini, A. & S. Consp. p. 20. 

 Valsa Pini, Fr. Summa Veg. Sc. p. 412. 

 Exsicc. Fckl. F. Rh. 608. Rab. F. E. 147, 634, 1013. Rehm Asc. 432. Sydow Myc. March. 

 477, 1950, 1829. Thum. M. U. 2256 Roum. F. G. 5028. 



Stromata evenly scattered or subgregarious, hemispherical, 11-2} 

 mm. across, covered by the pustuliform-elevated epidermis, which is 

 pierced or ruptured by the closely packed, short ostiola with rounded 

 or obtuse tips, forming a black, flat or concave disk. Sometimes the 

 marginal ones and sometimes all are elongated (J-l mm.), but usually 

 they remain short. Perithecia very small but numerous, 20-30 in 

 a stroma, closely packed, globose, with short necks. Asci narrow-cla- 

 vate, sessile, 25-30 x 5-Q fi. Sporidia irregularly crowded, cylindrical, 

 curved, hyaline, 6-9 x 1 J [a. 



