408 



Perithecia scattered, subcuticular, slightly fupturing- but scarcely 

 raising the epidermis, flattened, seated on the surface of the inner bark, 

 broadly perforated above, brownish-black, |-| mm. diam. Asci ven- 

 tricose-clavate, 150 x 25-30 /i (p. sp. 110-120 /z), paraphysate. Spo- 

 ridia biseriate, clavate-oblong, 3-5-septate and muriform, nearly hya- 

 line and with a hyaline envelope and uniseptate at first, becoming 

 yellowish-brown, 30^0 x 12-15 ^. 



On Carpinus Americana, Lyndonville, N. Y. (Fairman). 



At the main septum, which appears first, the sporidia are distinct- 

 ly constricted. The upper and larger cell soon acquires two addi- 

 tional septa and the lower cell one. Most of the cells are divided by 

 one or two longitudinal septa so that the sporidia appear to be filled 

 with large nuclei. The asci and sporidia in the New York specc. are 

 smaller than the measurements given by Dr. Winter (170-220 x 35- 

 42 ju, and 45-65 x 17-21 fi). Tckl. gives 208 x 36 pt, and 48 x 16 fx 

 for asci and sporidia respectively. 



MASSARIOVALSA, Sacc. 



Mich. II, p. 569. 



Perithecia buried in the surface of the inner bark, circinate. Asci 

 and sporidia as in Massariella. 



M. siidans, (B. & 0.) (Plate 30) 



. Massaria sudans, B. & C. Grev. IV. p, 156. 

 Massariovaha, sudans, Sacc. Syll. Add. vol, II, p. LV. 

 Massariella sudans, Sacc. Syll. I, p. 717. 

 Exsicc. Ell. N. A. F. 1190. 



Perithecia circinate, sunk in the surface of the inner bark, ovate- 

 globose, J mm. diam., 4-8 together, their slender ostiola converging 

 and united in a black, convex, erumpent disk. Asci clavate-cylin- 

 drical, 180-200x20-25 fx, stipitate, obtuse, 8-spored, paraphysate. 

 Sporidia uniseriate, oblong-elliptical, uniseptate and constricted, olive- 

 brown, 30-40 X 15-16 ju, with a thick, hyaline envelope. 



On dead branches of Acer, Garya and Quercus, New Jersey and 

 Pennsylvania. 



M. caudkta, E. & E. (in Herb.) 



Stroma cortical, 1-1 J mm. diam. Perithecia circinate, 6-10 in a 

 pustule, about \ mm. diam., buried in the bark, covered by the epi- 

 dermis which is raised into a flat pustule ruptured in the center by the 

 compact cluster of black, subpapilliform ostiola. Asci varying from 

 clavate, 75-80 x 25-35 n, to obovate, 80-100 x 40-60 /i, narrowed be- 



