303 



Jut mil, but not so distinctly annnlnte-dcpressetl. Asoi 00-110 xfi-CJ niicruns, 

 spore-bearing part 55-65 x 5-G microns. Spores ovate-oblong, pale brown, 

 8-10x3-4.5 microns. (E. & E. — Spores 9-10.5x3.5 microns.) 



On decorticated Ulnius, near site of university reservoir, Bloomington, 

 Indiana. 



The stroma in this species is very scant. The perithecia are sparingly 

 fused or confluent so that there is not much substance aside from that 

 comprised in the perithecia themselves. 

 cS. H. multiforme, Fr. 



Sphaeria multiformis, Fr. 

 Sphaeria peltata, DC. 

 Sphaeria rubiforniis, Pers. 

 Ilypoxylon granulnsum. Bull. 



Stroma erunipent and often margined by the ruptured bark, of various 

 shapes, at first rounded, then i-preading and becoming somewhat flattened 

 above, dull rusty-red, finally black and smooth. Perithecia irregularly 

 nuinostichons, rather large (1 nnn.), globose, distinctly prominent, with 

 papilliform ostiola. Asci cylindrical, on long pedicels, 95-110x0-7 microns, 

 spore bearing part 00-70x0-7 microns. Spores 9-12x4.5-0 microns. (E. 

 & E. — Spores 9-10.5 x 3.5 microns. ) 



On Fagus, Ulmus and Juglans, vicinity of Bloomington, Ind. Also 

 reported on Betula (where the stroma is nsually transversely elongated), 

 Alnns, Sorbns, Quercus and Castanea. 



Specimen No. 2193 in tlie herbarium at Indiana University seems to 

 be the most typical one in onr collection. Several other specimens in the 

 same herbarium were identified by Dr. Peck as depressed forms. They 

 have somewhat smaller perithecia. 

 i). IT. lloweianum, Pk. 



Stroma globose or depressed-globose, 5-15 mm. across ; surface brick- 

 red or sometimes orange colored or slightly olivaceous, becoming darker, 

 almost smooth but densely punctuate with the minute, black ostiola ; sub- 

 stance of a shining blue-black or brown-black color and showing a radiate- 

 fibrous structure, usually with from one to three or more faint, concentric 

 zones. Perithecia ovate, .25-. 75 mm. high, peripherical in a single layer, 

 with scarcely more than the minute ostiola projecting. Asci 75-90 x 4-5 

 microns, spore-bearing part 50-G0x4-5 microns. Spores 7-8x3-4 microns. 

 (E. & E. — Asci, spore-bearing part 45-50x5 microns. Spores 0-7x3-3.5 

 ndcrons.) 



