42 



thin, reticulated margin, and indistinctly perforated in the center; 

 texture cellular. Asci 30-35 x 6-8 /i, oblong, rather broader below 

 and abruptly contracted into a short, stipitate base. Paraphyses none. 

 Sporidia biseriate, oblong, uniseptate, rather narrower and more acute 

 at the lower end, 7-12x2^-3 //, hyaline. When the perithecium is 

 removed from the leaf, a piece of the epidermis often adheres to its 

 lower surface, so that under the microscope the stomata are visible 

 through the thin edge of the perithecium, appearing as if they actually 

 formed a part of it. It is to be noted that in this and most of the other 

 species with flattened perithecia, the wall of the pei'ithecium is nearly 

 obsolete below, so that the perithecium is in fact hardly more than a 

 shield-like disk covering the asci. 



On living leaves of Quercus laurifolia, Florida (Martin). 



A. subcyknea, E. & M. Am. Nat. 18, p. 1148. 



Kxsicc. Kll. N. A. F. No. 1360, 



Perithecia hypophyllous, convex, depressed, ostiolate, obsolete 

 beneath, 250-300 [i diaui., subglobose, composed of dark greenish-blue 

 cells 5-7 n diam., which cover the nucleus and extend beyond in a 

 thin, membranaceous border closely adnate to the leaf. Ostiolum 

 papilliform, collapsing, with a broad, circular opening when dry. Asci 

 slightly narrower at each end, sessile, 8-spored, 75 x 15 //. Sporidia 

 hyaline, oblong-clavate, uniseptate, 2-seriate, 20x4^7 fi. 



On living leaves of Quercus laurifolia, Florida (Martin). 



A. Gaultherise, Cnrtis, (in Herb. Curtis). 



Exsicc. Ell. N, A. F. No, 1358. 



Perithecia brown-black, flattened, slightly elevated in the center, 

 hypophyllous, scattered, 170-250 /i diam., surrounded by a narrow 

 border of brown, branching mycelium. Asci ovate, 22-25 x 13-16 ji. 

 Sporidia hyaline, obovate, uniseptate, the upper cell larger, 9x3//., 



On living leaves of Gaultheria procumbens, common. 



A. Pearsoni, E. & M. Journ. Mycol. I, p. 92. 



Perithecia minute (100 p), flat, superficial, obscurely perforated 

 above, of close, cellular structure, with a scanty, subradiating mycelium 

 around the margin. Asci oblong, obtuse, sessile, 40x15 //, without 

 paraphyses. Sporidia biseriate, clavate-oblong, granular, becoming 

 uniseptate and slightly constricted at the septa, 15-20 x 3J-4^ /i, acute 

 below, obtuse above, hyaline. 



On blackberry canes, Vineland, N. J. (Pearson). 



