737 



late-oblong, obtuse at the ends, finally distinctly triseptate, brown, 

 22-24x4-5//. 



Common on Rosa and Rubus stems, Carolina and Pennsylvania 



(Schw.). 



Page 413. After Hypospila piistula, insert 

 H. bifrons, (DC.) 



Xyloma bifrons, DC. Flor. France, VI, p. 156. 



Sphceria bifrons, Kze. and Schm. Deutschl. Schwamnie, No. 204. 



Hypospila bifrons, Sacc. Syll. 3535. 



Perithecia amphigenous, innate, arranged in circular groups, flat- 

 tened, black, at length circumscissile, convex-prominent, finally um- 

 bilicate. Asci cylindric-clava*te, 50-55 x 10-11 /jl. Sporidia biseriate, 

 oblong, inequilateral, 10-12x4 /jl, guttulate, subobtuse, slightly curved, 

 hyaline, with a single septum near the lower end, 10-12 x 3^-4 /x. 



On oak leaves, Bethlehem, Pa. (Schw.). 



Page 426. After Diaporthe subcongrua, add 



More perfectly developed specc. on dead limbs of Acer sacchari- 

 num, London, Canada (Dearness), have the sporidia broader (5-7 /jl). 



Page 429. To synonyms of Diaporthe leiphsemia, add 



Sphceria Micheliana, Fr. S. M. II, p. 414 (sec. Cke. Grev. XV, 

 p. 80). 



Page 434. After Diaporthe tuberculosa, insert 



D. staphylina, E. & E. (in Herb.) 



Stroma formed from the slightly altered substance of the bark, 

 light-colored inside, orbicular, elliptical or elongated, 2-4 mm. in the 

 longer diameter, flattish-pulvinate, with a very narrow, faint, circum- 

 scribing line which does not penetrate the wood, covered above 

 by the epidermis, which is not ruptured, but simply perforated by the 

 scattered ostiola and only slightly elevated. Perithecia buried in the 

 stroma, 3-10, globose, about \ mm. diam., their papilliform, finally 

 umbilicate ostiola erumpent, sometimes singly, but mostly joined in a 

 small, black, irregular-shaped disk which barely pierces the epidermis 

 without rising above it. Asci clavate, stipitate, p. sp. 50-55 x 7-8 /jl, 

 paraphysate, 8-spored. Sporidia subbiseriate, oblong-elliptical, slightly 

 curved, scarcely constricted, 3-4-nucleate, becoming uniseptate, hyaline, 

 12-15x4-5 fi. 



On dead limbs of Staphylea trifolia, London, Canada (Dearness). 

 93 



