140 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



Perithecia 4 to 8, loosely circinate. .75 mm. horn-color inside, 

 becoming nearly black, sunk in the wood, necks converging with 

 their obtuse, smooth, hemispherical ostiola erumpent in a close 

 fascicle, closely surrounded by the ruptured epidermis. Asci 

 slender, 55 to 60 x 6 to 7 /*, short-stipitate. Sporidia subbi- 

 seriate, fusoid-oblong, hyaline, 2 to 4-nucleate, becoming uni- 

 septate and slightly constricted, straight, 12 to 15 x 2.5 to 3 ;JL. 



There is no distinct circumscribing line around the stroma, 

 but the inner surface of the bark is uniformly blackened. 



D. CHOROSTATE Tetrapterae E.& E., Proc. Phila. Acad., 339 (1894). 



TYPE HABITAT: On dead limbs Mohrodendron Carolinum, May, 

 1894 (Nuttall, discov. 1542). 



Stroma cortical, 1.5 to 2 mm. diameter, surrounded by a black 

 line which does not penetrate the wood. Perithecia 4 to 12, cir- 

 cinate, 5 mm. diameter, sunk to the wood and leaving their im- 

 press on its surface 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 to 80 x 12 //. Sporidia biseriate, oblong-fusoid, 

 slightly curved, subobtuse, hyaline, uniseptate and constricted 

 at the septum, each cell with a large nucleus, 9 to 22 x 5 to 7 //. 



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

 sunk in the wood, and its much larger sporidia. 



D. CHOROSTATE Aceris Fckl. 



On Acer saccharinum, L. , Jan. 26, 1894 (Nuttall, 1739). 



D. Hydrangese E. & E., sp. nov. 



TYPE HABITAT: On dead stems Hydrangea arborescens, Nov. 

 1894 (Nuttall, discov. 1756, 641). 



Perithecia scattered, ovate-globose, 350 to 380 //. diameter, 

 sunk in the wood, whicn is not at all discolored. Ostiola 

 stout, erumpent, short-cylindrical, or conic-cylindrical, the apex 

 papilliform. Asci (p. sp.) oblong-cylindrical, 50 to 60 x 8 //, 

 8-spored, obscurely paraphysate. Sporidia biseriate, oblong 

 elliptical, hyaline, uniseptate, slightly constricted, 12 to 15 x 

 3 to 4 /JL, ends subacute. 



This may be the Sphceria spoken of by Schweinitz as found by 

 him on limbs of Hydrangea, in company with his Spharia (Teich 

 ospora) Hydrangea. 



D. CHOROSTATE cercophora (Ellis.) Sacc. 



On Ilex opaca Dec. 23, 1893, March 15, 1894 (Nuttall, 1333). 



D. CHOROSTATE oncostoma (DuB.) Fckl. 



On Robinia Pseudacacia, April 7, 1894. Spores 17 to 19 x 4 to 

 5 fj. (Nuttall, 1446). 



D. CHOROSTATE sociata (C. & E.) Sacc. 



On Benzoin Benzoin, April 13, 1895. Helminthospores 75 to 100 

 x 15 //. 7-septate (Nuttall, 1798). 



D. CHOROSTATE obscura (Peck) Sacc. 



On Rubits villosus, Feb. 13, 1893 (Nuttall, 1313, 260). 



