WEST VIRGINIA GEOLOGICAL SURVEY 99 



erumpent in a close fascicle, closely surrounded by -the rup- 

 tured epidermis. Asci slender, 55 to 60 x 6 to 7 ju, short- 

 stipitate. Sporidia sub-biseriate, fusoid-oblong, hyaline^ 2 to 

 4-nucleate, becoming uniseptate and slightly constricted, 

 straight, 12 to 15 x 2.5 to 3 p. 



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, circinate, 5 mm. diameter, sunk to the wood and 

 leaving their impress on its surface but not penetrating it. 

 Ostiola obtusely rounded and perforated, erumpent in a com- 

 pact fascicle and closely surrounded by the ruptured epi- 

 dermis. Asci clavate-cylindrical, 75 to 80 x 12 ju. 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 /A. 



Differs from D. Halesiae 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. HYDRANGEAE E. & E., Field Mus. Bot., 1 1140 (1896). 



TYPE HABITAT : On dead stems Hydrangea arbor esc ens, 

 Nov., 1894 (Nuttall, discov. 1756, 641). 



Perithecia scattered, ovate-globose, 350 to 380 ^ diameter, 

 sunk in the wood, which 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 /x, 8-spored, obscurely paraphysate. Sporidia biseriate, 

 oblong-elliptical, hyaline, uniseptate, slightly constructed, 12 

 to 15 x 3 to 4 /x, ends subacute. 



This may be the Sphaeria spoken of by Schweinitz as 

 found by him on limbs of Hydrangea, in company with his 

 Sphaeria (Teichospora) Hydrangeae. 

 D. (CHOROSTATE) CERCOPHORA (Ellis.) Sacc. 



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



1333)- 

 D. (CHOROSTATE) ONCOSTOMA (Du B.) 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 p. 7-septate (Nuttall, 1798). 



