227 



of the bark which is pierced by the narrow, slightly compressed ostio- 

 lum. Asci clavate-cylindrical, 75-90 x 6-7 //, with abundant filiform 

 paraphyses. Sporidia biseriate, fusiform, slightly curved, yellowish, 

 nucleate and uniseptate at first, becoming 3-septate and more or less 

 constricted at the septa, 18-22 x 3-3 J p.. Accompanied by a Phoma 

 with small subglobose sporules in perithecia scarcely different from the 

 ascigerous perithecia, except in wanting the prominent ostiolum. 



On the inner surface of loose hanging bark of grape vines, New- 

 field, X. J. The perithecia are more deeply buried than in L. trisep- 

 tatum, Pk. 



L. Ariindiiiis, (Fr.) 



Spfuzria Arundinis, Fr, S. M. II, p. 510. 

 Lophiostoma Arundinis, Ces. & De Not. Schema, p. 46. 

 Exsicc. Rab. Herb. Mycol. 641. Rehm. Ascotn. 692. 



Perithecia scattered or gregarious, sometimes confluent, at first 

 immersed, finally more or less eruinpent, but seldom superficial, spher- 

 ical, black, solid, subrugose, with a rather small, thick, obtuse or some- 

 times subacute ostiolum with an elongated opening. Asci clavate- 

 cylindrical, substipitate, 100-130 x 12-15 /JL. Sporidia biseriate, fusoid, 

 mostly curved, 3-5-septate, and slightly constricted at the septa, brown. 

 30-37 x 6 fi. 



On reeds and grasses, South Carolina (Cke. Hnclbk. p. 852). 

 In- the following species the fructification is unknown. 



L. Tliapsi, (Schw.) 



Sphteria Thapsi, Schw. Syn, N. Am. 1607. 

 Lophiostoma Thapsi, Cke. Syn. 3714. 



Perithecia globose-conical, not smooth, flattened at the base and 

 innate or subimmersed, scattered on black spots, on parts of the stem 

 from which the woolly covering has fallen off, at first only the ostiolum 

 eruinpent, finally also the peritheciuin itself. Ostiolum thick, conical, 

 compressed, less than half as high as the breadth of the peritheciuni, 

 at length dehiscent. 



Common on decaying mullein stalks around Bethlehem, Pa. 



L. variabile, (Schw.) 



SphtXria variabilis, Schw. Syn. N. Am. 1608. 

 Lophiostoma variabile, Cke. Syn. 3715. 



Perithecia elliptical, flattened, rugulose, generally seated on a 

 black spot caused by the contents of the perithecia oozing out, almost 

 always covered by the fibers of the stem, which are raised in a pustnli- 

 form manner over it, only the compressed, very variable ostiolum. 



