657 



On the bark of young dead branches of Juglans tomentosa, 

 Bethlehem. Pa. (Schw.). 



The spec, in Herb. Schw. has the stroma |-1 cm. long, by 1 J-2 

 mm. wide. Ostiola slightly prominent. Sporidia (free spores, no asci 

 seen) navicular-elliptical, 7-9 x 3J-4 fi. 



H. sphaeriostomum, (Schw.) 



Sphceria sphcsriostoma , Schw. Syn. N. Am. 1213. 

 Hypoxylon spfueriostotnum, Cke. Syn. 1033. 



Short, subpulvinate, carbonaceous, very black, 46 mm. long, 

 oblong, acuminate at each end, surface longitudinally striate. On this 

 blackened surface are sphseriiform, globose, scattered ostiola, per- 

 forated with a round opening and connected by a rather long tube 

 with the subjacent perithecia, which are buried in the wood without 

 any real stroma, ovate, rather large, filled with a black mass which, 

 under the lens, appears to be composed of spores like those of a 

 Melanconium. 



On soft, rotten wood, Bethlehem, Pa. (Schw.). 



The fructification of this species is unknown. , 



Hypoxylon Beaumontii, B. & C. 



Hypoxylon nudicolle, B. & C. 



Hypoxylon gemmatum, B. & C. 



Hypoxylon gregale, (Schw.) 



have already been described under Valsaria. Of these, it is probable 

 that H. Beaumontii should be removed to Hypoxylon. Berkeley in 

 Grew makes the sporidia uniseptate, but Cke. Grew XII, p. 134, finds 

 the sporidia in the original specimens, in Herb. Berk., continuous. 

 H gregale, (Schw.) also (sec. spec, in Herb. Schw.) has continuous 

 sporidia and is a true Hypoxylon. Hypoxylon miniatum, Cke. in 

 Journ. Mycol. IV, p. 87, is (sec. Cke.) not that species, and must be 

 rejected from the list of North American species. 



Hypoxylon glomus, B. & (. Grew IV, p. 51, has the appearance of 

 a Diatrype, but is sterile (Cke. Grew XII, p. 126). 



H. spondflinum, (Fr.) 



Sphczria spondylina, Fr. S. M. II, p. 347- 



Hypoxylon spondylinum, Fr. Suinma Veg. Scand. p. 383. 



Nummularta spondylina, Sacc. Syll. 1542. 



Erumpent, variable, convex, subruirose. black outside and inside, 

 Although erumpent, it becomes entirely free, not even adnate at the 



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