433 



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

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



On dead limbs of Amela itchier 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 mm. cliam.. 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, 40-50x6-7 ,. Sporidia sub- 

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

 stricted, 10-12x3 p. 



On dead limbs of 31agiioll<t glauca. Xewfield, N. J. 



This was published in the Proc. A cad. Nat. ScL 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 submenus CJtorostatc. where we now place it. 



D. Ellisii, Rehm. in litrris and in Sacc. Syll. 0554. 



Exsicc. EH. & Evrht. N. A. F. 2d Ser. 1567. 



Stronia cortical without any circumscribing line. Perithechi 

 numerous (15-20), subcircinate, al:>out \ mm. diani., raising the bark 

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

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



* 



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

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

 11-15 x 3J-5J JM. 



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



With a Cytispora having oblong, hyaline, 4-nucleate sporules. 

 8-11 x 2-2 \ p, issuing in an orange colored mas- 



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



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

 Diaporthe tubercnlosa^ Sacc. Syll. 2404. 

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



Perithecia 8-10, about 400-500 p. cliani.. subcircinatihg, and 

 buried in a stroma formed entirely of the substance of the Ijark, whir-li 



V 



55 



