433 



Sporidia biseriate, oblong-elliptical, 4-nucleate, slightly constricted in 

 the middle, hyaline, 11-13 x4-4| fi. 



On dead limbs of Amelanchier Canadensis, Iowa (Holway). 



D. Magnolia?, E. & E. (in Herb.) 



Stroma irregular in outline, elongated for 2-4 (or more) cm. in 

 extent, and consisting of the unaltered substance of the bark and wood, 

 enclosed in a thin, black layer which appears, on a horizontal section, 

 as a narrow, black line penetrating the wood to the depth of 2-3 mm. 

 Perithecia 4-8 together, buried in the bark and partly sunk in the 

 subjacent wood, about J lam. diam., whitish or horn-color inside, with 

 converging necks erumpent in a fascicle together, their tubercular- 

 cylindrical ostiola, rounded and obtuse, and more or less distinctly 

 quadrisulcate, soon perforating or rupturing the epidermis and raising it 

 into small pustules, but hardly rising above it. Asci clavate-cylindric- 

 al, aparaphysate, subsessile, 8-spored, 40-50 x 6-7 jut, Sporidia sub- 

 biseriate, oblong-fusoid, 2-3-nucleate, then uniseptate and slightly con- 

 stricted, 10-12x3//. 



On dead limbs of Magnolia glauca, Newfield, N. J. 



This" was published in the Proc. Acad. Nat. Sci. Phil. July, 1890, 

 p. 235, as D. Americana, Speg,, but the perithecia are too large, and 

 too distinctly clustered to allow it to be referred to that species. It 

 belongs evidently in the subgenus Uhorostate, where we now place it, 



D. Ellisii* Rehm. in Uteris and in Sacc, SylL 6554. 



E.xsicc. EU. & Evrht. N. A. F. 2d Ser. 156?. 



Stroma cortical without any circumscribing line. Perithecia 

 numerous (15-20), subcircinate, about \ mm. diam., raising the bark 

 into small pustules, through the center of which, bursts the brown, con- 

 Vex disk, pierced around its margin by the black, obtuse, dot-like ostiola. 

 Asci subclavate, 57-62x7-9 p. Sporidia biseriate or overlapping, 

 narrowly elliptical, 4-nucleate, often slightly constricted in the middlev 

 ll-15x3i-5| fi.. 



On dead branches of Garpinus Americana, West Chester, Pa. 



With a Gytispora having oblong, hyaline, 4-nucleate sporules, 

 8-11 x 2-2 \ jut, issuing in an orange colored mass. 



D. tuberculosa, (Ell.) (Plate 33) 



Valsa tuberculosa, EH. Bull. Torr. Bot. Club, Vlll, p. 89, 

 Diaporthe tuberculosa, Sacc. Syll. 2404. 

 Exsicc. EH. N. A. F. 880. 



Perithecia 8-10, about 400-500 p diam., subcireinating, and 

 buried in a stroma formed entirely of the substance of the bark^ which 

 55 



