543 



/ 



Circinate, minute. Perithecia about 6 together, entirely covered, 

 ovate, the cylindrical, subattenuated, convergent ostiola erumpent. 

 Asci -? Sporidia subcymbiform, 3-septate, sometimes slightly 

 constricted, dark brown, 50-52 x 12-14 //. straight or curved. 



On branches of Rosa corymbosa, Carolina and Pennsylvania 

 i Schw.). 



FEXESTELLA, Tul. 



Sel. Carp. II, p. 208, emend. Sacc. Mich. I, p. 50. 



Perithecia and stroma as in Valsa. Asci cylindrical, 4-8-spored. 

 ^poridia uniseriate, oblong or elliptical, muriform, yellow-brown. 



F. priuceps, Tul. Sel. Carp. II, p. 207. 



Valsa fenestrata, B. & Br. Ann. & Mag. Nat. Hist. Ser. Ill, torn. Ill, p. 366. 

 Thyridium Faberi, Kunze, F. Sel. 263. 

 1 .xsicc. Fckl. F. Rh. 1999. M. March. 261, 1571, 1885. Roura. F. G. 5253. 



Stroma orbicular or elliptical at base, lenticular, sunk in the 

 parenchyma of the bark, with the epidermis sliglitly pustulate-elevated 

 over it, consisting of brown, floccose matter. Perithecia 3-14 in a 

 stroma. crowded and mostly angular from compression, collapsing when 

 dry, black, about | mm. diam., with short-cylindrical, perforated osri- 

 ola. united in a roundish or lanceolate, erumpent disk, scarcely rising 

 above the epidermis. Asci cylindrical, short-stipitate, 150-200 x 18- 

 20 n (210-2(>0 x 22-27, Sacc. in Syll.), with numerous paraphys.--. 

 Sporidia uniseriate. oblong-elliptical, constricted in the middle, closely 

 multiseptate and muriform, golden-yellow, becoming brown, with a 

 hyaline, papillose projection at each end. 25-40 x 14-20 //. 



On dead limbs of Grata <jn*. London, Canada (Dearn ess), on dead 

 limbs of Salix, Lyndonville, X. Y. (Fairman). 



F. amorpha, E. & E. Journ. Mycol. IV, p. 58. Proc. Acad. Xat. 

 Sci. Phil. July, 1890, p. 239. Proc. Roch. Acad. Aug. 

 1890, p. 48. " (Plate 35) 



Stroma tuberculiform, seated on the wood, variable in size from 

 1 mm., inclosing a single perithecium to 3 or 4 mm. with 4-6 perithe- 

 oia, or sometimes confluent in a seriate manner, for 1 cm. or more. 

 Perithecia flask-shaped, about 1 mm. high and | mm. broad, black out- 

 side but the internal texture white, connate and subseriate, the short 

 (J nini,), cylindrical ostiola converging, but not united in a disk, burst- 

 ing out through cracks in the bark, but scarcely projecting. Asci 

 cylindrical, with a narrow base, 150-175 x 12-15 p, with abundant 



