211 



paraphysate. Sporidia biseriate, oblong, 3-septate, brown, constricted 

 and separating at the middle septum. Differs from Trematosphceria 

 principally in its sporidia separating in the middle, 



0. rugulosa, Fckl. 1. c. 



Exsicc. EH. N. A. F. 694. 



Stroma inconspicuous or none. Perithecia gregarious, adnate- 

 superficial, conic-globose, about J mm. diam., carbonaceous, black, sub- 

 vclutinous below. Ostiolum conic-tuberculiform, soon perforated. 

 Asci clavate-cylindrical, stipitate, 80-110x7-8 /*, paraphysate. Spo- 

 ridia biseriate, fusoid-oblong, 3-septate, brown, constricted and sepa- 

 rating in the middle, 16-20 x4-4 /i (14-16 x4|-5 /i, Winter and 

 Sylloge). 



On the hard wood of a decaying oak stump, Newfield, N. J. 

 Found also in Florida by W. W. Calkins. 



0. modesta, Fckl. 1. c. 



Exsicc. Fckl. F. Rh. 2173. EH. N. A. F. 694 (b). 



Differs from the preceding in its distinct, pulverulent-velutinous 

 subiculum and rather smaller sporidia (14-16 x3|^ fi). 

 On a decaying oak stump, Newfield, N. J. 



WINTERIA, Rehm. 



Ascom. Diag. No. 286. 



Perithecia rather soft, membranaceous, not carbonaceous, greenish* 

 or reddish-parenchymatous, generally collapsing to cup-shaped. Osti- 

 olum perforated. Sporidia hyaline, 2- or more^septate, and sometimes 

 subfusiform. 



W. creriilea, E. & E. Journ. Mycol. I, p. 91. 



Perithecia scattered, membranaceous, flattened, \-\ mm. diam,, 

 covered by the thin epidermis, through which they are plainly visible. 

 Ostiolum broad-papilliform, obtuse, collapsing when dry so that the 

 perithecia appear umbilicate. Asci 75-114x16-17 //, oblong-cylin- 

 drical, abruptly contracted below into a short, stout base, and sur- 

 rounded by filiform paraphyses. Sporidia 8 in an ascus, broad fusiform 

 or clavate -fusiform, narrowed below into an acute, awl-shaped base, 

 yellowish, multi- (8-12-) septate and submuriform, 30-35 x 7-8 ju. 



On bark of some living coniferous tree, Washington (leg. Suks* 

 dorf, com. C. J. Sprague). 



