325 

 G. amcena, (Nees.), var. petiolornm, (Schw). 



Sphceria petiolorum, Schw. Syn. Car. 153. 



Gnomonia amcena, Nees. var. petiolorum, Schw. Cke. Syn. 3840. 

 Exsicc. Raw Fungi Car. I, No. 64. EH- & Evrht. N. A. F. 2dSer. 2543. Rav. F. Am. 374. 



Perithecia gregarious, buried, about 400 ft diam., the slender 

 ostiolum about 1 mm. long, rising through a white, granular, superficial 

 tubercle. Asci clavate, p. sp. 1 8-22 x 6 a or, including the slender 

 base, 30-35 ft long. Sporidia fasciculately crowded, narrow-fusiform, 

 nearly straight, 10-12 x 1J-1J /i, 3-4-nucleate, hyaline, continuous. 



On fallen and decaying petioles of Liquidambar, Carolina, Lou- 

 isiana and New Jersey, (sec. Peck also on fallen petioles of ash, New 

 York). 



The typical form is found in Europe on petioles and leaves of 

 Gorylus, and has, sec. Sacc, asci 36 x 8 ft and sporidia 8x4/.*, contin- 

 uous and 2-4-nucleate ; sec. Winter, asci 45-50x9-10 ft, sporidia 

 fusoid, acute, septate and constricted in the middle, hyaline. 12-16 x 3 



G. excentrica, (C. & P.) 



Sphceria excentrica, C. & P. 25th Rep. N. Y. State Mus. p. 105. 

 Gnomoniella excentrica , Sacc. Syll. 1585. 

 Gnomonia excentrica, Cke. Syn. 3857. 



Perithecia scattered, depressed, black, at first covered by the 

 epidermis, which is pierced by the excentric or lateral, curved, acute, 

 rostellate ostiolum; at length superficial. Asci subclavate. Sporidia 

 crowded or biseriate, subfusiform, 4-nucleate, hyaline, 8J-9 ft long. 



On dead stems of Polygonum, New York State. 



G. vulgaris, Ces. & De Not. Schema, p. 58. 



Sphceria Gnomon, Tode Fungi Meckl. II, p. 50, fig. 125. 

 Ceratosioma Gnomon, Fr. S. M. II, p. 497. 

 Cryptosphceria Gnomon, Grev. Flora E)din. p. 360. 

 Gnomoniella vulgaris, Sacc. Syll. 1578. 

 Exsicc. Rab. F. F. 1453. Rehm Asc. 95. Thum. F. Austr, 163. Thum. M. U. 562. 



Perithecia scattered, hypophyllous, at first sphaeroid, covered, 

 then emergent and collapsed, beak elongated, straight, often a little 

 thickened towards the end, as long as, or a little longer, than the 

 diameter of the perithecium. Asci elongated-fusoid, briefly stipitate, 

 32-42 x 5-6 ft. Sporidia conglobate, rod-shaped, subacute, 4-nucleate. 

 straight or slightly curved, hyaline, 12-18 x 1-2 ft. 



On leaves of Ostrya Virginica, Troy, N. Y. (Peck). 



