308 



/.( //. rii/idircns. (Tors.) Fr. 



Spliaeria coliacrciis. I'crs. 



Stroma erniupeiit-suiH'rficial, irregularly suhglobose or rtoprossed- 

 lu'iiiisiilu'rical. usually alxiut .1-4 nun. in diameter, gregarious or crowded. 

 (iricii conllucnt, at tirst diity lnowii. hectniiiiiir ])lack or nearly black. Peri- 

 thecia irregularly nionnstii-lious, usually 5 to 15 or 20 in a stroma, large 

 (.75-1 nun.), with ])ai>il]il'()rm ostiola. Sometimes the perithecia are dis- 

 tinctly iiromint'iit, forming an ii-rcgular stroma composed of a few, large, 

 rounded perithecia loosely joined together. Asci 100-150x0-7 microns, 

 spore-bearing pjirt (15-00 x (i-7 microns. Spores S:-12 x 3.5-5.5 microns. 



Connnon on liark of Fagus, near F.Ioomington, Indiana. 



Some forms of this species slightly resemble //. atmulatitm, from 

 Viiiich it is distinguished by the absence of the annulate-truncate disk on 

 the perithecia. Other forms resemWe //. tiirhiiiiildtinn, but the latter 

 usually has less prominently projecting perithecia, with more prominent 

 o.stiola, a larger number of perithecia in a stroma, and is more turbinn- 

 lately narrowed below. 



IG. II. tufh'niiihihnii. (Sdiw.) I'erk. 



Sjibaeria turbinulata, Schw. 



Stroma tnrbinate-pulvinate, 2-(i mm. in diameter, subcontinent, but 

 with the stroninta nearly always distinct, at first brown, then black. The 

 stromata are arranged in a seriate manner so as to bear some re.semblance 

 to Ileln-ew letters, and are sometimes seated on a black crust which over- 

 s])reads the bark. Peritheci:i large, scattered through the entire stroma, 

 witli siu.-ili, scattered, but consijicuous ostiola which are the most promi- 

 nent part of the perithecia above the surface of the stroma. Asci 120-140 

 x5-(i microns, spore-liearing part 70-80x5-0 microns. Spores 9-11x3.5-5 

 microns, d'l iV: E. — Spec, in Herb. Schw., Spores 8-10x3.5-4.5 microns.) 



On dead Iiaik of Fagus, neighborhood of Bloomington, Indiana. 



To distinguish this s])ecies from //. cohaercns, see under description 

 of the latter. 



All figures in this iia]ier are iiractically natural size. 



JiKlitiiKi University, 

 Ilhioiii iiH/ton, Indiana. 



