436 



D, paiilula, (C. & E.) 



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



Diaporthe paulula, Sacc. Syll. 2391. - • 



Perithecia few, 1-A together, subglobose, about 200 fi 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 /i. Sporidia 

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

 3-4 fi. 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, 

 4x1 //. 



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

 pidula, (Ell). 



DiflFers from D. sociata, C. it 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 | 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.) jibout 60x12 /i. Sporidia 

 subbiseriate, oblong, 4-nucleate, uniseptate, consti'icted, 12-16 x 3-4 /i, 

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

 line around the stroma. 



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



D. conjiincta, (Nees.) 



Sph^Eria conjuncta, Nees. Syst. p, 305, fig. 337. 

 Diaporihe conjuncta, Fckl. Symb. p. zo6. 



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, 6.3-78 x 10 12 /i. Sporidia biseriate, fusoid, 

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

 not constricted, hj-aline, 17-20 x 3|-4 ji. 



D. Coraptonise, (Scliw.) 



SphcEria Comptonitz, Schw. Syn. N. Am. 1353. 



Diaporthe Comptonia, H. &. E. Proc. Acad. Nat. Sci. Phil. July, 1890, p. 234. 

 Exsiec. Ell. & Evrht. N. A. F. 2d Ser. 2364. 



