556 



sprinkled below with a gTayisii powder. Asci clavate, 8-spored. Spo- 

 ridia fusoid, triseptatc, hyaline, 20-22 x 4 fi. 

 On bare wood, Pennsylvania. 



M. Spragfiei, B. & 0. Grev. IV, p. 99, and XIII, p. 103. 



ThyHdium. Spraguei^ Sacc. Syll. 3994. 



" Undulate, pulverulent, looking like the work of some burrowing 

 larva. Perithecia entirely concealed. Asci linear. Sporidia short- 

 clavate, with three horizontal and a few vertical septa.'' 



Sec. Cke. (G-rev. 1. e.) this has no affinity with Thyridium. It 

 occurs on small branches (of Pinus strobus), Massachusetts. 



VALSARIA, Ces. & De Not. 



Schema Sferiac. p. 31. 



Stroma variable, valsiform or effused, usually covered by the epi- 

 dermis. Asci mostly 8- (sometimes 4-) spored, paraphysate. Sporidia 

 oblong or elliptical, uniseptate, brown. 



V. insitiva, Ces. & De Not. 



Diatrype cincta, (Curr.) B. & Br. ia EU. N. A, F. 170. 

 Valsa cleih-rcEcola^ C. & E. Grev. V, p. 92. 

 Diatrype ^thiops, C. & E. Grev. VI, p. 10. 

 Exsicc. Fckl. F. Rh. 1821, 1822.— Rab. F. E. 1128, 2111, 2112.— Rehm. Asc. 170. 

 Ell. N. A. F. 170.— Sacc. M. Veil. 1185. 



Stroma variable, I nim.-lj cm. diam., valsiform, diatrypoid, pul- 

 vinate-tubercular, &c., dull black outside and subcrustaceous, light to- 

 bacco-brown, and softer (subcarnose) within, blackening the wood be- 

 neath, and the bark around it. Perithecia deeply sunk in the stroma, 

 scarcely over \ mm. diam., ovate or flask-shaped, black, coriaceous, nu- 

 merous, contracted into rather long, slender necks, which rise through 

 the stroma, and barely pierce its surface in subcircinate groups, but are 

 not exserted, papilliform or short-conical, and then substellate-cleft, 

 finally umbilicate. Asci cylindrical, short-stipitate, paraphysate. Spo- 

 ridia imiseriate, mostly lying end to end, oblong-elliptical, uniseptate 

 and constricted at the septum, dark brown, rounded at the ends, 12- 

 20x7-10//. 



On dead limbs of Morus, Clethru^ Qiiercus, Garya, Pyriig, Melia, 

 Berheris, and probably other deciduous trees, from Canada to Louisiana. 



Whether this is the Sphmria insitiva, Tode, does not seem to be 

 definitely known. The Diatrype cincta, in Ell. N. A. P. 170, does 

 not differ appreciably from Rehm Asc. 170, which Dr. Winter quotes 

 as V. insitiva. V. clethxecola, C. & E., varies with the stroma val- 



