317 



Perithecia scattered or 2-3 together on the surface of the inner 

 bark, and covered by the thin, loosened cuticle which is pierced by 

 the papilliform ostiola. Asci 35-40 x 6-7 /jl, with slender paraphy- 

 ses. Sporidia biseriate, obloug-fusiform, uniseptate, constricted at the 

 septum and slightly curved, yellowish-hyaline, with a faint, bristle-like 

 appendage at each end, and a nucleus in each cell, 7-8 x 1 J 2 fx. 



On dead branches of cultivated roses, Bethlehem, Pa. (Rau). 



D. lophospora, Sacc. & Speg. Mich. I, p. 376, F. Ital. tab. 3676. 



Exsicc. N. A. F. 588. 



Perithecia gregarious, covered by the cuticle, subprominent and 

 subglobose, scarcely papillate, mm. diam., texture compact, dark. 

 Asci thick-clavate, 65-75 x 12 jut (p. sp. 50 x 12 //), stipitate, with 

 abundant filiform paraphyses, 8-spored. Sporidia biseriate, cylindric- 

 fusoid, straight or curved, 15-18x3-4 /1 (16-17x5-6 ji Sacc), uni- 

 septate and obtuse, constricted in the middle, hyaline, with a broad, 

 ill-defined appendage at each end. Var. Acetosellce, Ell. & Sacc. has 

 asci 80-90x8-10 ju, sporidia 10-12x4 pu 



On fallen oak leaves, Ohio. On peduncles of Rhus copallina, 

 bark of grape vines, twigs of Sassafras, and capsules of (Enothera, 

 Newfield, N. J., and on Staphylea, in Pennsylvania. 



D. Cornuti, E. & E. 1. c. 



Perithecia scattered, minute, 175-200 p diam., attached to the 

 blackened surface of the stem just beneath the thin epidermis which is 

 barely pierced by the prominent ostiola. Asci cylindrical, nearly 

 sessile, 65-70 x 7 p. Paraphyses present. Sporidia biseriate, fusiform, 

 yellowish, very slightly curved, uniseptate and constricted, becoming 

 3-septate, 20-25 x 3-3J p, ends subobtuse. 



On dead stems of Asclepias Cornuti, London, Canada (Dearness). 



D. Andropogonis, E. & E. 1. c. 



Perithecia hypophyllous, subgregarious, about \ mm. diam., 

 buried in the substance of the leaf, with the apex and short, conic-cylin- 

 drical ostiolum projecting. Asci cylindrical, narrow, 80-90 x 5 p, with 

 filiform paraphyses. Sporidia overlapping-uniseriate, fusoid-oblong, 

 3-nucleate, becoming 1-2-septate and constricted, acute at first, but 

 finally obtuse, hyaline or yellowish-hyaline, 12-15 x 3 p, some of them 

 very slightly curved. Near D. subgemina, B. & C. 



On dead leaves of Andropogon muricatus, St. Martinsville, La. 



