327 



Perithecia membranaceous, globose, 100-165 /i diam., rough, bed- 

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

 surface and their cylindrical, obtuse, subclavate ostiola about equal in 

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

 oblong-cylindrical, p. sp. 35-40x5-6 [i, aparaphysate. Sporidia 

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

 equally uniseptate and obtuse, 7|-9x2-2i /<, yellowish-hyaline. 



On fallen leaves of Quercus nigra and Carya, Newfield, N. J. 



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

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



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



a. Coryli, (Batsch). 



Spharia Coryli, Batsch Blench. Cont. IT, p. 131. 



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



Gnomonia Coryli, Awd. M, Bur. Pyr. p. 23, fig. 1123, and Cke. Syn. 3863. 



Gnomoniella Coryli, Sacc. Syll. 1590. 

 Bxsicc. Fckl. F. Rh. SSi.— Rab. F. B. 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. Bd. 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 blackened 

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

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

 the diameter of the perithecium, rising through a minute, pallid disk. 

 Asci clavate, with a short stipe, 36-40 xl fi, 8-spored. Sporidia 

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

 gonium Leptothyriutn Coryli, Fckl. 



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

 34th Rep. 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 same leaf we. coiled. 



G. flmbriata, (Pers.) 



SphcEria fimbriaia, Pers. Syn. p. 56. 



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



Gnomoniella Jimbriata, Sacc. Syll. 1589. 



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

 Bxsicc. Fckl. F. Rh. 882.— Kriegr. F. Sax. 133.— Kze. F. Sel. 107.— Brikss. 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.— Linn. F. Hung. 252.— Bll- &Bvrht. 

 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 [I diam., membranaceous, with long, cylindrical, mostly curved. 



