304 



On Acer and Fagus, vicinity of Blooniington, Indiana. 



This species is distiuguislied from //. coccineum by the radiate-fibrous, 

 concentric-zoned structure of the stroma, whidi is lackinj; in the latter, 

 and also by its much smaller spores. 



Specimen No. 2245 in the Indiana I'niversity Herbarium is a peculiar 

 form, having a thin orange-colored or brick-red crust which peels off 

 easily, and shows only a few scattered perithecia. This is perhaps an 

 immature specimen. 



10. II. coccineum, Bull. 



Sphaeria fraj,"il'(>rniis, I'ers. 



Sphaeria rubra, Willd. 



Sphaeria lycoperdoides, Weigel. 



Sphaeria radians, Tode. 



Sphaeria tuberculosa. Sow. 



Spliaeria bicolor, DC. 



Sphaeria lateritia, DC. 



Lycoperdon pisiforme. Sow. 



Lycoperdon variolosum, Lin. 



Stromatosphaeria fragiformis, Grev. 

 Strdina globose or subglobose, erumpent, turning llic lork dari; m 

 si leaks for a short distance around, then sui>erficial, completely hidinz 

 the scar wliere it iu-oke through the outer bark, deep brit-k-red when 

 mature, often paler when young, sometimes turning darker with age after 

 malurily, 2-10 mm. in diameter; interior homogeneous and of an even 

 sooty or gray-black color; surface evenly mammillose fi-om tlu' slightly 

 P'rojecting perithecia; finally solitary or .joined together in tufts of two. 

 three, or more. Perithecia i)eriplu>rical in a single layi'i-. subglobose or 

 ovate, slightly prominent, crowded, .;{:>-.."i mm. in (li.imctcr. Asci 115-140 

 X ()-8 microns, si>ore-bearing part 7(M)0x(l-s microns. Spores iilack. often 

 L'giittulate, 1(1-14x5-7 microns. {VI. & E.— Spores Ki-ll' \ 1-5 microns.) 



<tii liark of dead Fagus, vicinity of I'.loomington, Indiana. .Vlso re- 

 poilcd oil otiicr tivt's such as Quercus, Sali.K and Hetula. This is one of 

 our most coiimioii siiccics. 



// //. fiiscum, (Pers.) Fr. 



Si>haeria fusca. I'l-rs. 

 Sphaeria fragiformis. lloff. 

 Sphaeria conlluens, Willd. 

 Si)haeria tuberculosa, Bolt. 



