327 



Perithecia membranaceous, globose, 100-165 fj. diam. .rough, bed- 

 ded in the substance of the leaf, their bases projecting on the lower 

 surface and their cylindrical, obtuse, subclavate ostiola al>out equal in 

 length to the diameter of the perithecia, projecting above. Asci 

 oblong-cylindrical, p. sp. 35-40 x 5-6 t u. aparaphysate. Sporidia 

 biseriate, narrow-elliptical. subacute. 4-nucleate at first, becoming un- 

 equally uniseptate and obtuse, 7|-9x2-2J p, yellowish-hyaline. 



On fallen leaves of Querci/x niyra and Carya. Xewfield, X. J. 



The tips of the ostiola are generally enlarged into a knob-like 

 -\velling, and are somewhat cup-shaped with a large opening. 



C. Perithecia covered by an imperfect stroma (Mamiania). 

 G. Coryli, (Batsch). 



Sphczria Coryli, Batsch Elench. Cont. II, p. 131. 



.Mamiania Coryli, Ces. & De Not. Schema, p. 37, and Winter Die Pilze p. 670. 



Gnomimia Coryli, Awd. M. Eur. Pyr. p. 23, fig. 1123, aud Cke. Syn. 3863. 



Gnomonidla Coryli, Sacc. Syll. 1590. 



Exsicc. Fckl. F. Rh. 881. Rab. F. E. 333, 3260. Thum. F. Austr. 248. id. M. U. 1453. 

 Cke. F. Brit. 2d Ser. 278 Eriks. F. Scand. 291. Ell. N. A. F. 598. Desm. PI. 

 Crypt. Ed. I, 1762. id. Ed. 2d 1412. 



Perithecia hypophyllous, separate, arranged in a circle, sunk in 

 the parenchyma of the leaf, covered on both sides by the 1 thickened 

 and inflated epidermis, depressed-spheroid, or even lenticular, about 

 300 /JL diam.. with a stout, cylindrical beak about equal in length to 

 the diameter of the peritheciuin, rising through a minute; pallid disk. 

 Asci clavate, with a short stipe, 36-40 x 7 //, 8-spored. Sporidia 

 biseriate, obovoid. simple, subhyaline, granular, 7x3 v.. Spermo- 

 gonium Leptothyrium Coryli, Fckl. 



On leaves of Corylus, from Maine to Oregon; var. spiral is, Pk. 

 34th Eep. N. Y. State Mus. p. 57, differs from the ordinary form in 

 having the ostiola spirally coiled in about two volutions. All the 

 ostiola on the some leaf are coiled. 



6. fimbriata, (Pers.) 



Sph&ria fimbriata, Pers. Syn. p. 56. 



Mamiania fimbriata, Ces. & De Not. Schema, p. 37. 



Gnomoniella fimbriata, Sacc. Syll. 1589. 



Gnomonia fimbriata, Awd. in Rab. F. E. No. 928. 



Exsicc. Fckl. F. Rh. 882. Kriegr. F. Sax. 133. Kze. F. Sel. 107. Erikss. F. Scand. 197. 

 Sydow M. March. 479. Rehm Asc. 291. Thum. F. Austr. 867. Cke. F. Brit. 2d 

 Ser. 277. --Desm. PI. Crypt, de Fr. ist Ser. 969. L,inn. F. Hung. 252. Ell. &Evrht. 

 N. A. F. 2d Ser. 2361. 



Stromata irregularly scattered or sometimes subconfluent. irregu- 

 larly rounded, flat-pulvinate, shining-black, |-2 mm. broad, hypo- 

 phyllous. Perithecia 2-20 in a stroma, slightly prominent, globose. 

 400-500 fj. diam., membranaceous, with long, cylindrical, mostly curved. 



