334 



short, conical, black ostiola erumpent. Asci oblong-clavate, attenuated 



below, 4-8-spored. Sporidia obliquely uniseriate, elliptic-navicular, 



uniseptate, not constricted, brown. Stylospores in larger perithecia. 



On dead branches of grape vines, Saugerties, N. Y. (Peck). 



D. polysticta, (B. & C.) 



Sphceria polysticta, B. & C. Grev. IV, p. 149. 

 Didymosphceria polysticta, Sacc. Syll. 2670. 

 Didymosphcerella polysticta, Cke. Sj'n. 4668. 



" Perithecia scarcely raising the cuticle, visible chiefly from the 

 black, dot-like ostiola. Asci linear. Sporidia oblong, uniseptate, 

 7J x 3-3J /i." 



On stems of Smilax, Alabama (Beaumont). 



D. Vizeana, (Cke.) 



Sphceria Vizeana, Cke. Grev. VII, p. 12. 

 Didymosphceria Vizeana, Sacc. Syll. 2651. 

 Didymosphcerella Vizeana, Cke. Syn. 4662. 



Perithecia gregarious or scattered, about 200 /i diam., covered by 

 the blackened epidermis, finally collapsing. Asci oblong, sessile, 

 60-75 x 18-20 /i, (paraphysate) ? Sporidia biseriate, oblong-elliptical, 

 subinequilateral, yellowish, uniseptate, 18-22 x 7-10 p.. 



On dead stems of Lathyrus venosus, Sacramento, Cal. (Harkness). 



D. adelphica, (Cke.) 



Sphceria adelphica, Cke. Grev. VII, p. 42. 

 Didymosphceria adelphica, Sacc. Syll. 2652. 

 Didymosphcerella adelphica, Cke. Syn. 4663. 



This is an unsatisfactory and doubtful thing. The brief descrip- 

 tion in Grevillea does not enable one to recognize it. The spec, in our 

 herb, is only a stylosporous fungus (Diplodia), poorly developed. 



PLE0SP0RA, Rabh. 



in Herb. Mycol. Ed. II, No. 547. 



Stroma none. Perithecia at first covered, finally more or less 

 perfectly erumpent, mostly membranaceous, seldom of firmer texture, 

 black. Asci] mostly oblong or clavate-cylindrical, 8-spored, paraphy- 

 sate. Sporidia oblong, ovate or clavate-fusoid, with both transverse 

 and longitudinal septa (muriform), generally colored (yellow^ or yellow- 

 brown). 



This interesting but difficult genus has been elaborately described 

 and beautifully illustrated by Dr. A. N. Berlese, in his valuable mono- 

 graph of Pleospora &c. in Nuovo Giorn. Bot. Ital. Vol. XX, Nos. 1 

 and 2. 



