380 



they will be separated from the brown-spored species, so tliat it seems 

 more convenient to give them a separate generic name. It may be 

 noted that quite a number of the species grow on limbs, wood or bark 

 of trees or shrubs. 



A . On dicotyledonous plants. 

 * Spot^idia 3- (rarely 4-) septate. 



M. sepincola, (Fr.) 



Sphtzria sepincola^ Fr. S. M. II, p. 498, 

 MetasphiEria 'sepincola, Sacc. Syll. 3433. 

 Exsicc. Cke. F. Brit, ist Ser. 263 — Fckl. F. Rh. 2026.— Roum. F. G. 585. 



Gregarious. Perithecia covered, globose, subrugose, white with- 

 in, with a central nucleus, pierced with a simple ostiolum. Asci slen- 

 der-clijvate. Sporidia biseriate, fusiform, hyaline, 3-septate, 10 fi long, 

 (Berk.), 20 x 8 // (Fckl). 



On SpircBa opulifoUa, Mountains of New York (Berk, in Grev.). 



The spec, in Cke. P. Brit, is sterile, and in Roum. P. Gall, there 

 is only some stylosporous fungus, so that we can only give the pub- 

 lished diagnosis, which we have taken from Cooke's flandbook. The 

 species seems not to be well understood. 



M. semen, (C. & P.) 



Sphcsria {Caulicolcs) semen, C. & P. 2gth Rep. N, Y. State Mus. p. 65. 

 MetasphcEria semen, Sacc. Syll. 3460, 

 Psilosphceria semen, Cke. Syn, 2996. 



Perithecia soon free, globose, clustered, pierced at the apex, black. 

 Asci clavate or cylindrical. Sporidia biseriate, lanceolate, straight or 

 curved, 3-septate, deeply constricted in the middle, hyaline, 30-35 // 

 long. 



On fallen petioles of Pyrus Americana, New York State (Peck). 



M. rubida, E. & E. Proc. Acad. Nat. Sci. Phil. July, 1890, p. 237. 



Perithecia gregarious, globose, minute (| mm.), sunk in the surface 

 of the wood with their apices and obtusely-conic ostiola projecting. 

 On carefully shaving off the ostiola, the upper part of the perithecium 

 is seen to be filled with carnose, bright flesh-red material which is also 

 often visible through the broadly perforated ostiola. The lower part 

 of the perithecia is white inside. Asci clavate-cylindrical, 75-80 // 

 long (p. sp. about 40 x 12 //). Paraphyses abundant, longer than the 

 asci. Sporidia crowded-biseriate, oblong-fusoid, slightly curved, 3-sep- 

 tate, the next to the upper cell swollen, hyaline, 20-22 x 3|-4| n. 

 The upper part of the perithecia seems to be covered (as in Clypeo- 



