1894.] NATURAL SCIENCES OF PHILADELPHIA. 361 



Cytispora Halesiae E, & E. 



On dead limbs of Halesia tefraptera, Nuttallburg, West Va., May, 

 1894 (L. W. Nuttall). 



Stromata convex-conical, sunk in the bark, orbicular, about 1 mm. 

 diam. , white inside, unilocular, the inner surface of the cavity lined 

 with simple, straight basidia about 15//. long, bearing the oblong- 

 fusoid, hyaline, 2-uucleate, straight, 5-7x1-1?// sporules, which are 

 expelled through a single orifice perforating the raised epidermis. 



This probably is the sperraogouial stage of Diaporthe Salesice or 

 D. tetraptera, both of which are found in company with it. 

 Sphaeropsis Coryli E. & E. 



On dead limbs of Corylus Avellana, Newfield, N. J., June, 1894. 



Perithecia thickly scattered, globose, subcuticular, about 2 mm. 

 diam., raising the epidermis into small pustules which are finally 

 ruptured at the apex with a round or elongated opening. Sporules 

 oblong-elliptical, or the longer ones slightly curved and subcylin- 

 drical, 15-20x8-10/-.. 

 Sphaeropsis Asimiuse E. & E. 



On dead limbs of Asimina triloba, Nuttallburg, W. Va. , Feb. 

 1894 (L. W. Nuttall, No. 370). 



Perithecia scattered or subseriate, buried in the bark which is 

 raised into little pustules over them and soon ruptured. Perithecia 

 small (4- mm.), thick-walled, with an obscurely papilliform ostiolura. 

 Sporules oblong-elliptical, brown, obtuse, 18-22x8-10/'. 

 Sphasropsis Neilliae E. & E. 



On Physoearpus opulifoUus, London, Canada, May, 1893 (J. 

 Dearness). 



Perithecia scattered or sometimes 2-3 confluent, small (200/'), 

 covered by the blackened epidermis, semierumj)ent, with a black, 

 shining papilliform ostiolum. Sporules small, acutely elliptical, or 

 ovate-elliptical, pale brown, 12-16x4-5//. 

 Sphaeropsis Physocarpi E. & E. 



On dead Plnjsocarpus opulifoUus, Nuttallburg, West Va;, May, 

 1894 (L. W. Nuttall, Nos. 482 and 486). 



Perithecia scattered, * nini. diam., buried in the inner bark, with 

 their apices and papilliform ostiola erurapent, white inside (at first), 

 sometimes, as in the pi'eceding species 2-3 confluent. Sporules vary- 

 ing from short-elliptical 12-15x10/-, to oblong- or obovate-elliptical 

 15-20x10". 



