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 //, with slender paraphy- 

 ses. Sporidia biseriate, oblong-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 1J-2 p. 



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

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



Exsicc. N. A. F. 588. 



Perithecia gregarious, covered by the cuticle, snbproininent and 

 subgiobose, scarcely papillate, | mm. cliam., texture compact, dark. 

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

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

 fusoid, straight or curved, 15-18x3-4 p (I 6-1 7x5-6 p Sacc.), uui- 

 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 ^ sporidia 10-12x4 ^. 



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

 bnrk of grape vines, twigs of Sassafras, and capsules of (Enothem, 

 X CM field, X. J., and on Staphylea^ in Pennsylvania. 



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



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

 1 slackened surface of the stem just beneath the thin epidermis which is 

 barely pierced by the prominent ostiola. Asci cylindrical, nearly 

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

 yellowish, very slightly curvecl, uniseptate and constricted, becoming 

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



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



D. Audropogonis, E. & E. 1. c. 



Perithecia hypophyllous, stibgregarious, about J 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 //, 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, 12-15x 3 p. some of them 

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



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



