1893.] NATURAL SCIENCES OF PHILADELPHIA. 149 



Dermatella fraxini E. & E. 



On bark of Fraxinus, London, Canada. Feb., 1890. (Dearness, 

 No. 1,454.) 



Gregarious and subcespitose, flesh colored, convex, immarginate 

 1-1 mm. diam., contracted below and slightly obconic. Asci clavate- 

 cylindrical, 125-150 x 12-1 5//. Sporidia subbiseriate, oblong-cylin- 

 drical, subhyaline and uniseptate at first, then brown and 3-5- 

 septate, 25-35 x 10-1 2//. 



Dermatella hamamelidis E. & E. 



On dead stems of Hamamelis virginiana, West Chester, Pa. 

 June, 1889. 



Subcespitose, subsessile, about \ mm. diam., convex becoming 

 concave, immarginate, dark reddish-brown. Asci clavate-cylin- 

 drical, narrowed below into a stout substipitate base, 75-80 x 12- 

 15//, with linear paraphyses. Sporidia biseriate, oblong, subinequi- 

 lateral, yellowish, crowded with nuclei, 12-15 x 5-6//. Some of the 

 sporidia were faintly, 3-septate and it is probable that at maturity 

 they all become so. 



In the same locality and at the same time were found specimens 

 of D. purpurescens (on dead chestnut limbs as before) with the 

 sporidia distinctly 3-septate. 



Cenangella violacea E. & E. 



On an old cottonwood board, Rockport, Kansas. Dec, 1892. 

 (Bartholomew, No. 833.) 



Ascomata gregarious, slaty black, sessile with a thick but narrow 

 base, about I mm. diam., disk convex when fresh and deeply rugose, 

 with a narrow obtuse margin, when dry hysteriiform from the rolling 

 together of the opposite sides. Asci obovate, sessile, 35-50 x 15-20//, 

 8-spored. Sporidia inordinate, obovate, hyaline, uniseptate and con- 

 stricted at the septum, obtuse at the ends, variable in size 12-20 x 

 5-10//, almost exactly the same as those of Glonium linear e. Para- 

 physes stout, jointed, swollen above and violet color (under the 

 microscope), bearing hyaline elliptical, continuous conidia, 5-7 x 

 3-4//. 



Belonidium tympanoides E. & E. 



On rotten wood, London, Canada. Sept., 1889. (Dearness, No. 

 948.) 



Gregarious, carnose, sessile, black and closed when dry, hemis- 

 pherical when fresh and J-$ mm. diam., disk concave, pallid, with a 



