250 



0. qnercicola, E. & E. (in Herb.) 



Perithecia densely crowded, subglobose. 150-200 // diam., brown- 

 ish-black, granular-roughened, collapsing above, white inside, seated 

 on a brown, felt-like subiculum of matted, septate, sparingly branched 

 hairs, 5-G /JL diam., forming patches J-J cm. across and generally sur- 

 rounding the twig or limb, which is there swollen as in O. morbosa. 

 Asci oblong, subventricose, contracted below into a short stipe, 8-spored, 

 paraphysate, 75-80 x 18-20 jm. Sporidia crowded-biseriate, ovate- 

 elliptical, subinequilateral, uniseptate, scarcely constricted, hyaline, 

 becoming yellow-brown, 18-22 x 8-10 p.. 



On dead twigs of white oak, Newfield, N. J. 



0. fruticola, E. & E. 



Parodiellafruticola, E. & E. Journ. Mycol. IV, p. 97. 

 Dothidea insculpta, Wallr. in Roum. F. Gall. 547, and 4955. 

 Exsicc. Ell. & Evrht. N. A. F. 2d Ser. 21 2q. 



Perithecia obovate, astomous at hrst, about 1 mm. diam., black, 

 flattened above and finally umbilicate-collapsed and irregularly or 

 sublacinately ruptured above, seriately erumpent thi-ough cracks in 

 the bark, often densely crowded, but not confluent. Asci subcylindri- 

 cal, 100-150x15-20 ,. Paraphyses cylindrical, often branching 

 below, faintly septate, evanescent. Sporidia uniseriate or occasionally 

 more or less perfectly biseriate, broad fusoid-oblong, subinequilateral, 

 imiseptate, straw-yellow, 30-35x8-15 //. The perithecia are often 

 subangular from mutual pressure and are at first filled with a whitish, 

 grumous mass, but finally become empty. 



On dead stems of Clematis ligusticifolia, Sand Coulee, Montana 

 (Anderson). 



The Montana specc. are certainly the same as those issued in F. 

 Gall., above quoted, under the name of Dothidea insculpta, Wallr., 

 but that species (sec. Sacc. in Syll.) has cells peripherical and minute 

 (loculis periphericis, exiguis), which is not the case either with the 

 Montana or F. G. specc., in which the perithecia are as described 

 above. Specc. in our Herb, labeled Dothidea insculpta, Wallr., col- 

 lected by Dr. Morthier in Switzerland, agree with the F. G. and Mon- 

 tana specc. only the sporidia are 3-septate. 



B. Sporidia subhyaline (Otthiella, Sacc.) 

 0. alnea, (Pk.) 



Cucurbitaria alnea, Pk. 28th Rep. p. 75. 

 Otthia alnea, Sacc. Syll. 2804, Cke. Syn. 2490, 



Perithecia cespitose, erumpent, astomous, black, white within, the 



