307 



13. II. aniiiilatii)}!, (Scliw.) Mont. 



Sphaoria aiiiiiilata, Scliw. 

 Hypoxylou annulatnm. Mont. 



Stroma lienilsplieric-tnberculiforni, about 2-.j nnii. across, or irregularly 

 effused and interruptedly confluent-tuberculose, brownish-black or purplish- 

 black. Perithecia subglobose, irregularly monostichous, large (.75-1 mm.). 

 \\itli from one fourth to one half of the upper part free, finally annulate- 

 truncate above, with the black, papilliform ostiola in the center of the 

 truncate disk. Asci 90-12") x ('-7 microns, spoi-e-bearing part 65-80 x 6-7 

 microns. Spores 8-!) x 4-5 microns. (E. & E. — Spores 7-0 x ;:}.5 microns.) 



Common on bark and wood of Quercus, vicinity of Bloomington, In- 

 diana. 



This species is readily distinguished from N. marginatum (which also 

 has the annulate-truncate perithecia) by its usually smaller stroma, which 

 is very irregular on account of the larger, rounded and prominent peri- 

 iliecia. while the stroma of the latter species is even and regular. 



I-'i. II. sassafras, (Schw.) Berk. 



Sphaeria sassafras, Schw. 

 Hypoxylon sassafras, Berk. 



Stroma scant; perithecia large (1-1.5 mm.), the internal cavity nearly 

 1 mm. in diameter, occurring either singly or aggregated in clusters of 3-8 

 or more, standing in elongated areas mostly in grooves of the bark, some- 

 times flattened or compressed by mutual pressure, with their bases united 

 in a thin stroma of a dirty bro\^Tiish-black, and with one half or more of 

 their upper part free, sub-truncate above, with a minute, papilliform osti- 

 olum. Asci llO-l.'iO X 4-5 microns, spore-bearing part 65-75x4-5 microns. 

 Spores 7-9 x 3-4 microns. 



On dead fallen Sassafras, vicinity of Bloomington, Indiana. Also re- 

 ported on Lindera, where the perithecia may be more evenly scattered 

 over the matrix. 



I found this species growing in great abundance on dead saplings in 

 a thicket of Sassafras about four miles east of Bloomington, Indiana. In 

 some cases the whole trunk of the tree was thickly covered with the fun- 

 gus. It seems to prefer cracks and gi'ooves in the bark, and thus grows 

 in long, interrupted strips, which are parallel with the trunk, and in most 

 cases a single perithecium wide. 



