316 



D. sphierellula, (Pk.) 



Sphceria spharellula, Pk. 30th Rep. p. 66. 

 Endophlcca sphcBrellula, Cke. 3yn. 4117. 

 Didymclla sphierellula, Sacc. Syll. 2131. 



Perithecia minute, scattered or seriately placed, covered by the 

 epidermis ^'hich is at length ruptured. Asci broad, obtuse, gradually 

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

 fusiform, uniseptate, hyaline 12-15 ji long. 



On dead, bleached twigs of Acer Pennsylvanicum, Catskill Mts., 

 New York. 



D. s6gna, (C. & E.) 



SphtEria segna, C. & ]S. Grev. VI, p. 95, 

 Didymella segna, Sacc. SyU. 2141. 

 Etidophlcea segna, Cke. Syn. 4127. 



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

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

 clavate, 35 x (5-7 [i, paraphysate. Sporidia biseriate, fiisoid-oblong, 

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



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



D. Celtidis, (B. & C.) 



Sphixria Celtidis, B. & C. Grev. IV, p. 146. 

 Didymella Celtidis, Sacc. Sj'U. 2144. 

 Endophlcca Celtidis, Cke. Syn. 4129. 



"Perithecia closel}- 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 Geltis, 8outh Carolina. 



D. castanella, (C. «& E.) 



Sphisria castanella^ C. & '^, Grev. VII, p. lo, 

 Didymella castanella, Sacc, Syll. 2142. 

 Endophlcea castanella, Cke. Syn. 4128. 



Perithecia loosely embraced by the raptured cuticle, here and 

 'there gregarious. Asci clavate. Sporidia biseriate, cylindrical, uni- 

 septate, hyaline, 16x3^. 



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



D. Raiiii, (E. & E.) 



SphcBria (Didymella') Rauii, E. & E. Bull. Torr. Bot. Club, X, p. 90. 

 Endophlcca Rauii, Cke. Syn. 4138. 

 Didymella Rauii, Sacc. Syll. 6476. 

 Exsiic. Ell. N. A. F. 1336. 



