64 THE WEST VIRGINIA FLORA 



D. Cercidis E. & E., Proc. Phila. Acad., 1894, 363. 



Type habitat : On dead limbs Cercis Canadensis, April 

 9, 1894 (Nuttall, discov. 1475, 449). 



Perithecia subseriate, globose, .33 to .5 mm. diameter, 

 slightly sunk in the inner bark and splitting the epidermis 

 with short longitudinal clefts. Sporules elliptical, 20 to 

 23 X 10 to 15 /i on stout basidia, uniseptate. 

 D. iNFUSCANS E. & E., Proc. Phila. Acad., 1894, 363. 



Type habitat: On bark of dead limbs Fraxinus Ameri- 

 cana, April 27, 1894 {Nuttall, discov. 1492, 459). 



Perithecia ovate-globose, small, no to 150 /* diametei, 

 thickly scattered, blackening both the outer and inner sur- 

 face of the bark. . Ostiolum not conspicuous, obscurely 

 papiUiform. Sporules oblong-elliptical, 12 to 15 x 8 to 10 /^ 

 scarcely constricted. 



In D. inquinans West, the sporules and perithecia are 

 larger, and the bark is not blackened within. 

 D. atrata (Desm.) Sacc. 



On dead limbs Acer Negnndo, April 20, 1894 (Nuttall, 

 1465). 

 D. CARYiGENA E. & E., Proc. Phila. Acad., 1894, 363. 



Type habitat: On dead limbs Hicoria ovata. May 31, 

 1894 {Nuttall, discov. 1525). Also Canada (Dearness.) 



Perithecia subseriate, sunk in the inner bark, covered by 

 the epidermis, which is raised into pustules and ruptured, 

 about .5 mm. diameter, black. Sporules elliptical, brown, 

 uniseptate, scarcely constricted, 15 to 20 x 8 to 10 fi (Pycnidia 

 of Valsa caryigena B. & C). 

 D. ViTicoLA Desm. 



On Vitis, March 26, 1894. No septum visible in sporules 

 {Nuttall, 1443, 412). f 



D. iLicicoLA Desm. ? 



On Ilex opaca, Dec. 20, 1894. Sporules 22 to 25 x 11 to 

 13 /i {Nuttall, 1777, 667). 

 D. RuBi Fr. 



On Rubus cult., Feb. 19, 1895. Sporules 20 x 8 to 12 w 

 {Nuttall, 1789). 



D. INQUINANS West. 



On Fraxinus Americana, April 27, 1894 {Nuttall, 1491, 

 459)- 



D. JUGLANDIS Fr. 



On Juglans cincrca. April 9, 1894 {Nuttall. 1449). 

 D. Maydis (Berk.) Sacc. 



On Zea Mays, Aug. 10, 1895. Spores 30 x 4 /* {Nuttall, 

 1840, 729). 



