334 



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



lielow, 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. & €.) 



Sphi^rta polysticta, B. & C. Grev. IV, p. 149. 

 Didymosphczria polysticta, Sacc. Syll. 2670. 

 Didymosphesrella polysticta, Cke. Syn. 4668, 



'• Perithecia scarcely raising the cuticle, visible chiefly from the 

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

 7ix3-3i//." 



On stems of Smilax, Alabama (Beaumont). 



D. Vizeana, (Cke.) 



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

 DidymospheEria Vizeana, Sacc. Syll. 2651. 

 Didymosphcsrella Vizeana, Cke. Syn. 4662. 



Perithecia gregarious or scattered, about 200 /-; diam,, covered by 

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

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

 subinequilateral, yellowish, uniseptate, 18-22 x 7-10 /z. 



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



D. adelphica, (Cke.) 



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

 Didymosphceria adelphica, Sacc. Syll. 2652, 

 Didymosphczrella 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. 



PLEO'SPORA, 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- 

 gi'aph of Pleospora &c. in Nuovo Giorn. Bot. Ital. Vol. XX Nos 1 

 and 2. 



