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 ju, straight or curved. 



On branches of Rosa corymbosa, Carolina and Pennsylvania 

 (Schw.). 



FENESTELLA, Tul. 



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



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

 Sporidia uniseriate, oblong or elliptical, muriform, yellow-brown. 



F. princeps, 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. 

 Exsicc. Fckl. F. Rh. 1999. M. March. 261, 1571, 1885. Roum. F. G. 5253. 



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

 parenchyma of the bark, with the epidermis slightly 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 osti- 

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

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

 20 fi (210-260 x 22-27, Sacc. in Syll.), with numerous paraphyses. 

 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 ji. 



On dead limbs of Cratmgus, London, Canada (Dearness), on dead 

 limbs of Salix, Lyndon ville, N. Y. (Fairman). 



F. amorplia, E. & E. Journ. Mycol. IV, p. 58. Proc. Acad. Nat. 

 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- 

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

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

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

 (I mm.), 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 n with abundant 



