615 



surface convex, papillate. Sporidia oblong, brown, uniseptate, 15x5 //." 

 On dead branches of Lindera Benzoin, New York and Penn- 

 sylvania. 



The specc. in N. A. F., like those from Gerard, are sterile. The 

 general aspect is that of D. collecta, which perhaps this is. 



D. smilacicola, Cke. & Ger. Grev. VII, p. 14. 



"Scattered, black, erumpent, convex. Asci cylindrical. Spo- 

 ridia biglobose, strongly constricted, brown, 18-20 x 10 jiP 

 On Smilax twigs, New York (Gerard). 



D. Epilobii, Fr. S. M. II, p. 559. 



Spots amplexicaul, smooth, uniformly pitch-black, roughened by 

 the subprominent cells. 



On dead stems of Epilobium angustifolium, Adirondack Mts., 

 N. Y. (Peck). 



D. abnormis, Howe, Bull. Torr. Bot. Club, V, p. 42, from the de- 

 scription given, should be Hypoxylon, perhaps a form of H. smilacic- 

 olum, Howe. 



HOMOSTEGIA, Fckl. 



Symb. p. 223. 



Stroma somewhat flattened, or hemispherical, carbonaceous, black, 

 (gray inside). Ascigerous cells immersed, pale. Ostiola minute, 

 papillate. Asci oblong-clavate, 8-spored. Sporidia ovate-elliptical. 

 3-septate, brown. 



H. Pi^otii, <B. & Br.) 



Dothidea Piggotit, B. & Br. Not Brit. Fungi, No. 660. 

 SphcBria homostegia, Nyl. in Flora, 1857, p. 68S. 

 Homostegia adusta, Fckl. Symb. p. 224. 

 Homostegia Piggotit, Karst. Myc. Fenn. II, p. 221. 

 Exsicc. Fckl. F. Rh. 953. EH. N. A. F. 485. 



Stroma adnate to the lichen thallus, convex-pulvinate, 1-3 mm. 

 diam., dull black, wrinkled and roughened by the projecting ostiola. 

 Ascigerous cells ovate-globose, white, 120-150 fx diam. (260 //, Win- 

 ter), deeply sunk in the stroma. Asci oblong, short-stipitate, par- 

 aphysate, p. sp. 60-70x15 p (60-70x21-24 jut Winter). Sporidia 

 imperfectly biseriate, clavate-oblong, subinequilateral, slightly curved. 

 3-septate, brown (almost opake), 18-22 x 7-8 //, slightly constricted at 

 the septa. 



