428 



continuous stratum, which surrounds the branch and extends for a long 

 distance under the epidermis. 



We have not seen this species, and take the foregoing from the 

 report cited. 



D. Saccardiana, Kze, Sacc. Syll. 2430. 



Exsicc. Kze. P. SeT. 123. 



Perithecia 2-6 together, stibcircinate, buried in the unaltered 

 inner bark without any circumsci-ibing line, about 500 fi diam., with 

 their stout, conical or conic-cylindrical ostiola erumpent in a loosC; 

 fascicle together. Asci p, sp. oblong-fusoid, 40-45 x 8-9 fi. Sporidia 

 biseriate, oblong-fusoid, 4-nucleate, uniseptate and very slightly con- 

 stricted, 10-12 X 3-3| /i (1 5 X 4^-5 /i, Sacc). 



On small, dead limbs of elm, London, Canada (Dearness). 

 I The small gi'oups of perithecia lie close together, almost filling 

 the bark. There is no distinct apiculus at the ends of the sporidia, 

 nor do we see any in Kunze's specimens in which the sporidia are a 

 trifle larger, 10-14 x 3|-4 //. The latter also show a distinct, circum- 

 scribing line in the older and thicker bark, but none on the smaller 

 limbs. 



D. irapiilsa, (C. & P.) 



Valsa impulsa, C. & P. ZTth Kep. N. Y. State Mus. p. 109. 

 DiapOTthe impulsa^ Sacc. Syll. 2395. 



Stroma depressed-subc(mical, \-\ cm. diam., formed of the scarce- 

 ly altered substance of the bark, with a black, limiting line penetrat- 

 ing the wood. Perithecia 8-12, subcircinate, \-\ mm. diam., with 

 slender necks, the obtusely-conical, finally umbilicate-collapsing ostiola 

 erumpent through a small, grayish-black disk rather loosely surrounded 

 by the ruptured epidermis. Asci clavate-cylindrjcal, p. sp. about 

 40 x 6 II. Sporidia biseriate, fusoid, uniseptate, nucleate, hyaline, 

 hardly constricted, 16-20 x3-3| p.. 



On dead branches of Pyrus Americana, Adirondack Mts., 

 N. Y. (Peck), on Pyrus sambucifolia, California (Harkhess). 



Described from specc. sent by Mr. Peck. 



D. Ailanthi, Sacc. M. Ven. spec. p. 137, tab. XIII, figs. 40-43. 



Stroma valsoid. Acervuli scattered, small, consisting of 5-6 

 perithecia lying in subcircinate groups buried in the surface of the 

 wood and covered by the slightly raised epidermis, which is finally 

 ruptured. Perithecia subglobose, about \ mm. diam. Ostiola erum- 

 pent in a fascicle together, for some time covered by the epidermis, 



