657 



On the bark of young dead branches of Juylans tomenlosa, 

 Bethlehem. Pa. (Schw.). 



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

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

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



H. sphieriostonmm, (Sclnv.) 



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

 Hypoxylon sphceriostomum, Cke. Syn. 1033. 



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

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



/ 



blackened surface are sphaeriiform, 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. & ('. 

 Hypoxylon iiudicolle, B. & ('. 

 Hypoxylon gemmatum, B. & ('. 

 Hypoxylon gregale, (Schw.) 



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

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

 Grev. makes the sporidia uniseptate, but Cke. Grcv. XII. p. 134, find.- 

 the sj)oridia in the original specimens, in Herb. Berk., continuous. 

 H. (/regale. (Schw.) also (sec. -spec, in Herb. Schw.) has continuous 

 -poridia and is a true Hypoxylon. Hypoxylon miniatum, Cke. in 

 Journ. Mycol. IV, p. 87. is (see. Cke.) not that species, and must In- 

 rejected from the list of North American species. 



Hypoxylon gloiuns, B. & (. Grev. IV, p. 51, has the appearance of 

 a Diatrype. l>ut is sterile (Cke. Grev. XII, p. 126), 



H. spoudyliimm, (Fr.) 



Sphtzria spondyhna, Fr. S. M. II, p. 347, 



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



Nummularta spondylina, Sacc. Syll. 1542. 



Erumpent, variable, convex, subrugose, black outside and inside 

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

 83 



