I), sphserellula, (Pk.) 



316 



in */>/i">,'IIi<la, Pk. soth Rep. p. 66. 



s/>l'(n-cllitla, Cke. Syn. 41 i;. 

 Didymclla splucrclliila, Sacc. Syll. 2131. 



Perithecia iniinito, scattered or seriately placed, covered by the 

 epidermis which is at length ruptured. Asci broad, obtuse, gradually 

 narrowed above, suddenly contracted at the base. Sporidia crowded, 

 lusiform, uniseptate. hyaline 12-15 // long 1 . 



On dead. bleached twigs of Ace)' Pennsylvanicum, ( 1 alskill Mts.. 

 New York. 



D. segiia, (C. & E.) 



Sphceria segna, C. & E. Grev. VI, p. 95. 



Didymella segna, Sacc. Syll. 2141. 

 EndopMixa segna, Cke. Syn. 4127. 



Perithecia gregarious, covered, perforated above, raising the epi- 

 dermis into pustules which are soon ruptured above. Asci oblong- 

 clavate, 35 x (5-7 /A paraphysate. Sporidia biseriate, fusoid-oblong, 

 uniseptate and often slightly constricted, 12-13 x 3 // (15 x 7 //, Cke.) 



On dead branches of Nyssa multiflora, Newfield, X. J. 



D. Celtidis, (B. & C.) 



Sph&ria Celtidis, B. & C. Grev. IV, p. 146. 

 Didymella Celtidis, Sacc. Syll. 2144. 

 Endophlcea Celtidis, Cke. Syn. 4129. 



" Perithecia closely packed but distinct, covered by the bark, 

 which is slightly raised, so that the whole looks like fine shagreen. 

 Ostiola rather prominent. Asci short and with four Sporidia which 

 are oblong, obtuse, uniseptate." 



On branches of Celt-is, South Carolina. 



D. castanella, (C. & E.) 



Sphczria castanella, C. & K- Grev. VII, p. 10, 

 Didymella castanella, Sacc. Syll. 2142. 

 Endophlcea castanella, Cke. Syn. 4128. 



Perithecia loosely embraced by the ruptured cuticle, here and 

 there gregarious. Asci clavate. Sporidia biseriate, cylindrical, imi- 

 -eptate, hyaline, 16x3 t u. 



On dead twigs of Castanea, Xewfield, N. J. 



D. Raiiii, (E. & E.) 



Sphczria (Didymella) Rauii, E)- & E. Bull. Torr. Bot. Club, X, p. 90. 

 Eudophlica Rauii, Cke. Syn. 4138. 

 Didymella Rauii, Sacc. Syll. 6476. 

 . EH. N. A. F. 1336. 



