1894,] NATURAI. SCIENCES OF PHIIjADELPHIA. 339 



when the perithecia are removed. Asci (p. sp.) 45-50 x 7-8//, 

 clavate-cylindrical, paraphysate, 8-spored. Sporidia biseriate, ob- 

 long, 3-4-nucleate, slightly constricted in the middle, obtuse, hyaline, 

 10-12 X 8i-4/.'.. 



Very distinct from D. Ryckholtii, which is also found on SympJiori- 

 carpos. 



Diaporthe (Chorostate) tetraptera E. & E. 



On dead limbs of Halesia tetraptera, Nuttallburg, West Va., 

 May, 1894 (L. W. Nuttall). 



Stroma cortical, 1^-2 mm. diam., surrounded by a black line 

 which does not penetrate the wood. Perithecia 4-12, circinate, 

 5 mm. diam., sunk to the wood and leaving their impress on its sur- 

 face but not penetrating it. Ostiola obtusely rounded and perforated, 

 erumpent in a compact fascicle and closely surrounded by the 

 ruptured epidermis. Asci clavate-cylindrical, 75-80 x 12;/. Sporidia 

 biseriate, obloug-fusoid, slightly curved, subobtuse, hyaline, unisep- 

 tate and constricted at the septum, each cell with a large nucleus, 

 19-22 X 5-7;/. 



Differs from D. Haleske E. & E. in its smaller perithecia, not 

 sunk in the wood and its much larger sporidia. 



Diaporthe (Chorostate) Halesiae E. & E. 



On dead limbs of Halesia tetraptera, Nuttallburg, West Va., May, 

 1894 (L. W. Nuttall). 



Perithecia 4-8, loosely circinate, f mm. horn-color inside, becom- 

 ing nearly black, sunk in the wood, necks converging with their obtuse, 

 smooth, hemisphei'ical ostiola erumpent in a close fascicle, closely 

 surrounded by the ruptured epidermis. Asci slender, 55-60 x 6-7//, 

 short-stipitate. Sporidia subbiseriate, fusoid- oblong, hyaline, 2-4- 

 nucleate, becoming uniseptate and slightly constricted, straight, 12— 

 15 X 2i-3//. 



There is no distinct circumscribing line around the stroma, but the 

 inner surface of the bark is uniformly blackened. 



Diaporthe Araliae E. & E. 



On dead limbs of Aralia spinosa, Nuttallburg, West Va., Feb. 

 1894 (L. W. Nuttall, No. 312). 



Stroma buried in the wood and circumscribed by a penetrating, 

 black line, elliptical, about 5x4 ram. Perithecia buried in the 

 stroma, few (6-10) globose, A-J mm. diam., their short-cylindrical, 



