320 



D. Douglasii, E. & E. 



Splunclh; i-oiii^t-iia, K. NL K. Proc. Acad. Nat. Sci. Phil. Pa., July, 1890, p. 230. 



Perithecia gregarious on the back of the exposed tip of the scale, 

 minute (74-110 //), buried, except the black, smooth, conic-papilliform 

 apex. Asci narrow clavate-cylindrjcal, gradually attenuated below. 

 75-80 x 5 (L paraphyses filiform. Sporidia uniseriate. ovate, uniscp- 

 tate and constricted at the septum, hyaline, 6-7x3-3^ //. 



On scales of dead rones of Abies Douglasii, Belt Mts., Montana 

 (Anderson). 



D. onosmodina, (Pk. & Cl.) 



Sphezria onosmodina, P. & C. soth Rep. N. Y. State Mus. p. 67. 

 Didymella onosmodina, Sacc. Syll. 2165, Cke. Syn. 4388. 



Perithecia numerous, minute, at first covered by the epidermis, 

 then exposed, depressed, black. Ostiola pierced. Asci cylindrical. 

 Sporidia crowded or biseriate, oblong-elliptical, uniseptate, hyaline, 

 15-18J p long, the cells usually unequal. 



On dead steins of Onosmodium Carolinianum, Buffalo, N. Y. 



D. Dioscorese, (B. & C.) 



SphfEria Dioscorece, B. & C. Grev. IV, p. 152. 

 Didymella Dioscorecz, Sacc. Syll. 2190, Cke. Syn. 4419. 



"Very minute. Asci short, with few sporidia, which are oblong 

 and uniseptate, about three times longer than broad," (20 /u. long). 

 On stems of Dioscorea, South Carolina. 



D. lathyriiia, (B. & C.) 



Sphezria lathyrina, B. & C. Grev. IV, p. 155. 

 Didymella lathyrina, Sacc. Syll. 2167, Cke. Syn. 4391. 



" Very minute. Asci oblong. Sporidia 8 in an ascus, oblong, 

 uniseptate, constricted at the septum, biseriate, 7-8 p. long." 

 On stems of Lathyrus latifolius, Pennsylvania. 



D. commanipula, (B. & Br.) 



Sphczria commanipula, B. & Br. Ann. Nat. Hist. No. 645, tab. n, &g. 31. 

 Didymella commanipula, Sacc. Syll. 2173, Cke. Syn. 4399. 



"Scattered, at first subglobose, covered, at length denuded, col- 

 lapsed. Ostiola minute. Asci cylindrical. Sporidia biseriate, short 

 elliptic-cymbiform, uniseptate, sometimes decidedly conical, with a con- 

 striction about the center.' 



Specc. collected in California, on stems of spikenard, were doubt- 

 fully referred to this species in Grev. VII, p. 74. 



