436 



I), paiilula, (C. & E.) 



Valsa paulula, C. & E. Grev. VII, p. 9. 

 Diaporthe paulula, Sacc. Syll. 2391. 



Perithecia few, 2-4 together, subglobose, about 200 /i diam., 

 buried in the unaltered substance of the bark, which is raised into 

 small pustules ruptured by the short, obtuse, subumbilicate ostiola, 

 which scarcely project. Asci clavate, p. sp. about 40 x 6 fi. Sporidia 

 biseriate, oblong-fusoid, uniseptate and constricted, hyaline, 16-18 x 

 3-4 /jt. Spermogonial stroma radiate-multilocular, about 1 mm. diam., 

 rupturing the epidermis like the ascigerous stroma, from which it can 

 scarcely be distinguished outwardly. Spermatia allantoid, hyaline, 



4 X 1 [JL. 



On dead twigs of Nyssa, Newfield, N. J., with Cornularia his- 

 jiidula, (Ell.). 



Differs from D. sociata, C. & E., in the absence of any circum- 

 scribing line. 



D. nivosa, Ell. & Holw. Proc. Acad. Nat. Sci. Phil. Pa. July, 1890. 



Perithecia mostly 8-12, about f mm. diam., subcircinate, buried 

 in the unaltered substance of the bark which is raised in a pustulate 

 manner over them, contracted above into short necks with black, sub- 

 hemispherical, papilliform ostiola erumpent around the margin of a 

 snow-white disk rather less than 1 mm. diam., having the same general 

 appearance as V. nivea, Fr. Asci (p. sp.) about 60 x 12 [jl. Sporidia 

 subbiseriate, oblong, 4-nucleate, uniseptate, constricted, 12-16 x3-4 ft, 

 straight or very slightly curved. There is no black, circumscribing 

 line around the stroma. 



On dead alders, Isle Royale, Lake Superior (Holway). 



I), conjuncta, (Nees.) 



Sph&ria conjuncta, Nees. Syst. p. 305, fig. 337. 

 Diaporihe conjuncta, Fekl. Symb. p. 206. 



Perithecia circinate, globose, crowded, with short necks and with 

 elongated-cylindrical, smooth ostiola thickened at the tips and joined 

 in a round or transversely elongated, slightly projecting disk. Asci 

 clavate, sessile, 8-spored, 63-78 x 10 12 fi. Sporidia biseriate, fusoid, 

 slightly attenuated at the ends, inequilateral, septate in the middle. 

 not constricted, hyaline, 17-20 x 3|-4 pu 



I). Comptoniae, (Schw.) 



Sphceria Comptonicz, Schw. Syn. N. Am. 1353. 



Diaporthe Comptonice, E. &. E). Proc. Acad. Nat. Sci. Phil. July, 1890, p. 234. 

 Exsicc. EH. & Evrht. N. A. F. 2d Ser. 2364. 



