318 



D. Megarrhizse, Cke. & Hark. Grev. XIV, p. 9. 



Sphceria Megarrhizce, Cke. & Hark. Grev. XIII, p. 18? 

 Didymella Cookeana, Sacc. Syll. 6479. 

 Kxsicc. EH. & Fvrht. N. A. F. 2d Ser. 1661. 



Gregarious. Perithecia subcorneal, black, small, shining, at first 

 covered, the acute ostiolum at length erumpent. Asci cylindric-clavate, 

 8-spored. Sporidia elliptical, uniseptate, constricted in the middle, 

 straight, hyaline, 16-18 x 7 p.. 



On stems of Megarrhiza, California. 



D. Fiischiae, Cke. & Hark. 1. c. 



Scattered or subgregarious. Perithecia globose-depressed, black, 

 covered by the epidermis, the conical ostiolum emergent. Asci cylin- 

 dric-clavate, 8-spored. Sporidia biseriate, straight or curved, unisep- 

 tate, not constricted, binucleate, hyaline, 15 x 5 /a. 



On steins of Fuschia, California. 



D. Lupini, (Cke. & Hark.) 



Sphceria {Didymella) Lupini, Cke. & Hark. Grev. XIII, p 18. 

 Didymella Lupini, Sacc Syll. 6482, Cke. Syn. 4392. 



Perithecia scattered, punctiform, covered, depressed-globose, 

 slightly papillate. Asci clavate. Sporidia uniseptate, elliptical, yel- 

 lowish-hyaline (immature)? granulose, 15-17x6-7 ft. 



On stems of Lupinus, California. 



D. nivalis, (Fckl.) 



Sphceria nivalis, Fckl. in Die zweite deutsch Nordpolarf. p. 93, tab. 1, fig. 5. 

 Didymella nivalis, Sacc. Syll. 6483. 



Perithecia lying under the dry, whitened epidermis of the leaves 

 and stems, gregarious, minute, globose, very black. Ostiolum black, 

 acute, subprominent. Asci oblong-ovate, attenuated towards each end, 

 with a thick membrane, 8-spored, 94 x 20 ju. Sporidia collected in a 

 mass or subbiseriate, oblong, unequally didymous, ends obtuse, slightly 

 constricted at the septum, hyaline, 20x8 p.. 



On dry stems and leaves of Epilobium latifolium, Franz- 

 Joseplrs-Fiord, in Greenland. 



D. prominens, E. & E. Journ. My col. II, p. 101. 



Fxsicc. FH. & Fvrht. N. A. F. 2d Ser. 1796. 



Perithecia erumpent-superficial, scattered, ovate-hemispherical, 

 \ mm. diam., black, rough, except the prominent, tubercular-conical or 

 short-cylindrical ostiolum. Asci clavate-cylindrical, subsessile, 40- 

 45 x 6-7 fi t with filiform paraphyses, and eight subfusoid or subcymbi- 



