568 



On rotten wood, near Hull, Canada (Macoun). 

 D. corniita, E. & E. (in Herb.) 



Stromata scattered, erumpent, black, pulvinate-tuberculiform, 

 2-3 mm. diam., roughened by the short-cylindrical (1 mm. long), ob- 

 tuse, scattered ostiola, not penetrating to the wood, but blackening the 

 inner surface of the bark, and surrounded by a narrow circumscribing 

 line. Asci (p. sp.) clavate, 25-35 x 8-10 fi, 8-spored, with a slender 

 stipe and abundant paraphyses. Sporidia conglobate, allantoid, obtuse, 

 yellow, about 10 x 3 ,«. 



On bark of dead Ailanthus limbs, Lyndonville, N. Y. (Fairman). 



D. flbritecta, 0. & E. Grev. V, p. 31. 



Stromata small (1^ mm.), pustuliform, dark brown inside, seriate- 

 confluent, forming parallel lines or strips continuous for several centi- 

 meters. Perithecia crowded, small, brown. Ostiola erumpent through 

 the fibers of the bark which covers the pustules, short-cylindrical, 

 black, obtusely pointed, finally irregularly perforated. Asci clavate, 

 rounded at the apex, p. sp. 20-25 x 3-3| fi. Sporidia biseriate, allan- 

 toid, hyaline, 5-6 x 1-1| [i. 



On bark of dead Juniperus Virginiana, Newfield, N. J. 



D. verrucoides, Pk.,in Sacc. Syll. IX, p. 473. 



Pustules small, limited hy a black, circumscribing line, at first 

 covered by the epidermis which is longitudinally or stellately ruptured. 

 Stromata black outside, whitish within, frequently covered above by a 

 cinereous tomentum. Perithecia 3-8 in a pustule. Ostiola black, de- 

 pressed, stellate-sulcate. Asci clavate. Sporidia continuous, cylin- 

 drical, straight or slightly curved, 20 x 4 ;U. 



On dead branches of birch. New York State (Peck). 



This is said to have been published in 32d Rep. N. Y. State 

 Mus. — a publication we have never seen. 



D. aster6stoma, B. & C. Grev IV, p. 96. 



Exsicc. Rav. F. Am. 91, 655 and 656.— Ell. N. A. F. 88. 



Stromata wart-like, erumpent, scattered or subconfluent, 1^-2 J /z 

 diam., embraced at base by the ruptured epidermis, black (white 

 inside). Perithecia 10-20 in a stroma, globose, black, abi-uptly con- 

 tracted into slender necks rising through the white substance of the 

 stroma with prominent, stellate-cleft, erumpent ostiola. Asci clavate, 

 long-stipitate, p. sp. 25x4-5 fi, 8-spored. Sporidia allantoid, nearly 

 ■hyaline, moderately .curved, 6-10 x 1^-2 fi. 



