1894.] NATURAL SCIENCES OF PHIJ.AOEI.PHIA 863 



Perithecia mostly in valsoid clusters of 3-10, small (200//), white 

 inside, slightly sunk in the inner bark, their papilliform ostiola 

 rupturing'' the epidermis. Sporules elliptical, brown, continuous, 

 18-22x10-12,', on basidia of about the same length as the sporules. 

 Diplodia Kansensis E. & E. 



On weather-beaten, bleached bark of Juniperus Vhgbnava, 

 Rockport, Ks., Dec. 1893 (E. Bartholomew, No. 1,292). 



Perithecia scattered, subglobose, erumpent-superficial, i-l mm. 

 diam. Sporules ovate-elliptical, uniseptate, constricted, the septum 

 below the middle, brown, becoming nearly opake, 20-27 x 12-15//. 



Differs from D. Juniper! West, and D. Virginiana Cke., in its 

 larger ovate sporules. 



Diplodia caryigena E. & E. 



On dead limbs of Can/a alba, Canada (Dearness) and West Va. 

 (Nuttall). 



Perithecia subseriate, sunk in the inner bark, covered by the epi- 

 dermis which is raised into pustules and ruptured, about i mm. 

 diam., black. Sporules elliptical, brown, uniseptate, scarcely con- 

 stricted, 15-20 X 8-10/'. (Pycnidia of Valsa caryigena B. & C.)? 

 Diplodia infuscans E. & E. 



On bark of dead limbs of Fraxinus Americana, Nuttallburg, 

 West Va., May, 1894 (L. W. Nuttall, No. 459). 



Perithecia ovate-globose, small, 110-150/-. diam. , thickly scattered, 

 blackening both the outer and inner surface of the bark. Ostiolum 

 not conspicuous, obscurely papilliform. Sporules oblong-elliptical, 

 12-15 X 8-10//, scarcely constricted. 



In D. inquinans West, the sporules and perithecia are larger, and 

 the bark is not blackened within. 



Diplodia Cercidis E. & E. 



On dead limbs of Cercis Canadensis, Nuttallburg, West Va., 

 Apr. 1894 (L. W. Nuttall No. 449). 



Perithecia subseriate, globose, J-? mm. diam., slightly sunk in 

 the inner bark and splitting the epidermis with short, longitudinal 

 clefts. Sporules elliptical, 20-23 x 10-15/', on stout basidia, 

 uniseptate. 

 Botryodiplodia acerina E. & E. 



On dead limbs of Acer Pennsylvanicii.m, Nuttallburg, West Va., 

 Feb. 1894 (Nuttall, No. 319). 



