1890.] NATURAL SCIENCES OF PHILADELPHIA. 229 



Hypoxylon albocinctum. 



On bark of dead Cratcegus, Preston, Hamilton Co., Ohio, Jan., 

 1890. A. P. Morgan, No. 884. Stroma thin (1mm.), flat, carbon- 

 aceous, mostly orbicular, i-1 cm. diam., light cinei*eous at first soon 

 purplish-black except the margin which remains light colored for 

 some time, surface uneven from the projecting vertices of the peri- 

 theeia which are ovate-globose, small (^—1 mm.), monostichous, mod- 

 erately crowded, sunk nearly to the base of the stroma, contracted 

 above into a short neck terminating in the minute papilliform osti- 

 olum. Asci cylindrical, 80-100 x 5-6 ,'j.. (p. sp. about 60 //. long), 

 Avith abundant paraphyses. Sporidia uniseriate narrowly elliptical, 

 brown, 1-2 nucleate, subacute, 7-8 x oii-l //. The bark beneath 

 the stroma is whitened and surrounded by a black circumscribing 

 line. The general appearance is like that of orbicular forms of If. 

 serpens, from which it differs in its purplish stroma and smaller 

 perithecia and sporidia. 



Poronia leporina. 



On rabbit dung, Emma, Mo., Sept., 1889. Rev. C. H. Deme- 

 trio, 250. Stipitate, flesh colored, small, stipe 1-2 mm. long, A mm. 

 thick expanding above into a discoid stroma 1-2 mm. diam. and 

 mamillose from the slightly prominent perithecia which are ovate- 

 globose, about ^ mm. diam. 6-20 in a stroma. Ostiola large, black, 

 convex. Asci clavate-cylindrical, 80-100 (p. sp. 75-80) x 10-12 fj.. 

 with obscure paraphyses. Sporidia at first greenish-hyaline 1-2 

 nucleate, becoming opaque, subinequilaterally elliptical mostly uni- 

 seriate, 12-15 x 6-7 p.. 



Physalospora zeicola, E. & E. 



On dead stalks of Zea vimjs exposed to the weather through the 

 winter, Newfield, N. J., Apr., 1890. Perithecia gregarious minute 

 (1-i mm.) covered by the cuticle which is slightly raised and pierced 

 by the obtusely conical, black and shining ostiolum. Asci clavate- 

 cylindrical, 75-80 X 12-15 //. nearly sessile, with abundant para- 

 physes. Sporidia crowded-biseriate, elliptical or almond shaped, 

 hyaline, granular. 18-20 x 8-10. 



Physalospora conica. 



On old canes of Ariuidinaria, St. Martinsville, La., Oct., 1888. 

 Rev. A. B. Langlois, No. 1567. Perithecia gregarious, erumpent 

 and superficial, conical, about J mm. broad and high. Asci oblong 

 about 75 X 20 /j-. with abundant paraphyses. Sporidia biseriate, 



