318 



D. MegaiThizas Cke. & Hark. Grcv. XIV, ],. 9. 



Sphtzria M,^ahizcE, Cke. & Hark. Grev. XIII, p. iS? 

 Didymella Cookeana, Sacc. Syll. 6479. 

 Exsicc. Ell. & Evrht. N. A. F. 2d Ser. 1661. 



Gregarious. Perithecia subconical, black, small, shining, at lir-i 

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

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

 *t might, hyaline, 16-18x7 //.. 



On stems of Megarrhiza, California. 



D. Fiisdiia% Cke. & Hark. 1. c. 



Scattered or subgregarious. Perithecia globose-depressed, black. 

 'o\-erecl by the epidermis, the conical ostiolum emergent. Asci cylin- 

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

 tate, not constricted, binucleate, hyaline, 15x5 //. 



On stems 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 nniseptate, elliptical, yel- 

 lowish-hyaline (immature)? grantilose, 15-17x6-7 //. 



On stems of Lupinus, California. 



D. nivalis, (Fckl.) 



Sphezria nivalis, Fckl. in Die zweite deutsch Nordpolarf. p. 93, tab. i, 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, 

 \vith a thick membrane, 8-spored, 94 x 20 //. 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 latifolmm, Franz- 

 Joseplrs-Fiord. in Greenland. 



D. prominens, E. & E. Journ. Mycol. II, p. 101. 



Exsicc. EH. & Evrht. N. A. F. 2d Ser. 1796. 



Perithecia erumpent-superficial, scattered, ovate-hemispherical, 

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

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

 45 x 6-7 ft, with filiform paraphyses. and eight subfusoid or subcymbi- 



