320 



D. Douglasii, E. & E. 



Sphcsrella conigena, E. & E. Proc. Acad. Nat. Sci. Phil. Pa., July, 1890, p. 230. 



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

 minute (74110 /*), buried, except the black, smooth, conic-papilliform 

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

 75-80 x 5 /jl, paraphyses filiform. Sporidia uniseriate, ovate, unisep- 

 tate and constricted at the septum, hyaline, 6-7x3-3| p. 



On scales of dead cones of Abies Doiiglasii, Belt Mts., Montana 

 (Anderson). 



D. onosmodina, (Pk. & CI.) 



Sphczria onosmodina, P. & C. 30th Rep. N. Y. State Mus. p. 67. 

 Didymella onosmodina, Saec. 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, 

 15-1 8 \ /j. long, the cells usually unequal. 



On dead stems of Onosmodium Caroli?iianum, Buffalo, N. Y. 



D. Dioscorese, (B. & C.) 



SpluEria DioscorecE, B. & C. Grev. IV, p. 152. 

 Didymella Dioscoretz, 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 ji long). 

 On stems of Dioscorea, South Carolina. 



D. lathyrina, (B. & C.) 



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

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



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

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

 On stems of Lathyrus latifolius, Pennsylvania. 



D. commanipula, (B. & Br.) 



Sphceria commanipula, B. & Br. Ann. Nat. Hist. No. 645, tab. II, fi^. 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. 



