278 



S. ammlata, (<ke. Grev. VI. p. 146. 



Exsicc. Rav. F. Am. 378. 



Scattered, immersed. Peritliecia depressed, subannulate. Asci 

 davate. Sporidia elliptical, at length uniseptate, 8x3 /JL. 



On leaves of Magnolia, Aiken, South Carolina (Ravenel). 



S. glaiica, ke. Hedw. 1378. p. 39. 



Exsicc. Rav. F. Am. 94. 



Epiphyllous. Spots pale with a rose-colored tint, suborbicular, 

 margin darker, 2-4 mm. diain. Peritliecia semiimmersed, brown. Asci 

 'l;iv;ite. Sjioridia short-lanceolate, uniseptate, hyaline, 12-14x4 //.. 



On leaves of Magnolia glauca. South Carolina (Ravenel). 



S. Phellos, (Schw.) 



Sphtzria Phellos, Schw. Syn. N. Am. 1805. 

 Spluzrella Phellos, Cke. Journ. Bot. 1883, p. 106. 



Perithecia hypophyllons, collected a few together, in small, scat- 

 tered clusters, on a grayish-brown spot, penetrating to the opposite 

 side of the leaf, globose, subprominent, minute, black, perforated. Asci 

 clava,te. Sporidia narrow-elliptical, uniseptate, hyaline, 8-10 x2J //. 



On leaves of Quercus Phellos, Carolina (Schweinitz). 



S. convexula, (Schw.) 



SphcEria convexula, Schw. Syn. N. Am. 1788. 

 Exsicc. Thum. M. U. 1149. Rav. F. Am. 755. EH. & Evrht. N. A. F. 26. Ser. 1674. 



Peritliecia scattered over the whole lower surface of the leaf, 

 innate, rugulose, but somewhat shining, black, subastomous, strongly 

 convex, not collapsing. 



On leaves of Carya, Carolina, Pennsylvania, New York and Ohio. 



The specimens in all the Exsiccati above referred to, are unsatis- 

 factory, immature or sterile. Those in N. A. F. 1674, have asci 25-30 

 x 6 /JL, and sporidia, as near as can be made out, 6 x 2J-3 //, but they 

 are too immature to show an accurate outline. The perithecia in these 

 specc. are mostly in small patches as in S. maculiformis, and in this 

 respect do not agree with the description given by Schweinitz. 



S. petiolicola, (Desin.) 



Sphczi ia petiolicola, Desm. Ann. Sci. Nat. Ill, Ser. torn. XI, p. 354. 

 Sphesrella petiolicola, Awd. Myc. Eur. V, VI, Heft, p. 8, fig. 38. 

 Exsicc. EH. N. A. F. 795. Desm. PI. Cr. Ed. i, 2077. 



Perithecia scattered or subgregarious, at first covered by the epi- 

 dermis, which is either pierced or raised in a pustuliform manner, 

 spherical, black, perforated above, about 110 /JL cliam. Asci cylin- 



