340 PROCEEDINGS OF THE ACADEMY OF [1894. 



ostiola projecting from a black, tubercular disk seated on the sur- 

 face of the wood and perforating the pustuliform-elevated epidermis, 

 but scarcely rising above it. Asci clavate- cylindrical, 40-45 x 5- 

 6,'i, paraphysate, 8-spored. Sporidia biseriate, oblong, 4- nucleate, 

 becoming uniseptate and slightly constricted, hyaline, obtuse, 12- 

 13x2i-3//. 



Allied to and resembling D. ocularia C. & E. 



Valsa ribicola E. & E. 



On dead Ribes aureitm, Rockport, Kansas, Aug. 1894 (E. Bar- 

 tholomew, No. 1,530). 



Perithecia eircinate, 10-12 buried in the unchanged substance of 

 the inner bark, not penetrating to the wood or circumscribed by any 

 black line, 230-250," diam., ovate-globose, with slender necks con- 

 verging, with their rounded, black, finally subumbilicate ostiola 

 eruinpent around the margin of a dirty white disk. Asci clavate- 

 cyliudrical, about 60 x 8;/. Sporidia biseriate above, allantoid, 

 hyaline, obtuse, moderately curved, 12-15 x 3-4a. The white disk 

 is only the top of a grayish-white central column around the base of 

 which lie the perithecia, in a circle 1^-2 mm. diam. 



This cannot easily be mistaken for V. ribesia Karst., which has 

 sporidia only about half as large and differs also in other respects. 



Valsa Chionantlii E. & E. 



On dead limbs of Chionanthus Virginica, Nuttallburg, West Va., 

 March, 1894 (L. W. Nuttall, No. 228). 



Perithecia 4-10, globose, ]—h mm. diam., buried in the unchanged 

 substance of the bark, with convergent necks, terminating in short- 

 cylindrical, obtuse, perforated ostiola erumpent in a close fascicle 

 perforating and slightly raising the bark. Asci clavate, p. sp. 40- 

 45 X 8-10,'/, 8-sp()red, paraphysate? Sporidia allantoid, hyaline, 12- 

 15x3^-4i.", biseriate above. 



Spermogonia ( Cytispora Chioncmthi E. & E, ) buried in the bark, 

 flask-shaped, o--!," diam., nuiltilocular, the cells soon confluent, the 

 apex erumpent and perforated by a single pore. Sporules allantoid, 

 4—6x1-1},'/, borne on basidia branched above, the branches erect, 

 straight, nucleate, 7-10// long. 



Valsa Diospyri E. & E. 



On dead limbs of D'wspxjros Virr/iniaiia, Nuttallburg, West Va., 

 Dec. 1894 (L. W. Nuttall, No. 253). 



