346 PKOCEEDINGS OF THE ACADEMY OF [1894. 



not surrounded by any distinct annular depression, and by its broader 

 sporidia and the presence of a conidial layer. 



Hypoxylon Nuttallii E. & E. 



On bark of dead Magnolia Fraseri, Nuttallburg, West Va., May, 

 1894 (L. W. Nuttall, No. 477). 



Stromata gregarious, subconfluent, depressed-hemispherical or 

 strongly convex, 3-6 mm. diam., purplish-black, mammillose. Peri- 

 thecia small (about \ mm.), scattered irregularly through the stroma, 

 which is rather soft and brownish withiu. Ostiola crowning the 

 mammillose projections on the surface of the stroma, papilliform, 

 soon deciduous, leaving a round perforation. The asci in the specc. 

 examined had disappeared. Sporidia brown, oblong-elliptical, subin- 

 equilateral, 7-8x3-4/'. (exceptionally '9x5,'/). 



Hypoxylon atroviride E. & E. 



On bark of dead tree (Betiila or Querciis), Nuttallburg, West Va., 

 Dec. 1893 (L. W. Nuttall, No. 275). 



Stroma pulvinate, 1-1 ^ cm. across, and about 4 mm. thick, or- 

 bicular, covered above with a thin (i mm.) carbonaceous crust, 

 which is soon covered by a dark green layer of the ejected spores, 

 laterally and internally dirty umber color. Perithecia (which con- 

 stitute the entire inner substance of the stroma) ovate compressed, 

 and including the long, stout neck, about 3 mm. long and 1 mm. 

 broad below. Ostiola papilliform, soon covered and obscured by the 

 ejected sporidia. Asci cylindrical 100x32-4 " (p. sp. 40-45 long), 

 paraphysate, 8-spored. Sporidia uniseriate, oblong-elliptical, pale 

 brown, under the microscope 2-uucleate, 4^-52 x 2,7. 



This is a well- marked species. The substance of the stroma, ex- 

 cept the superficial, carbonaceous layer, is friable, and in this respect 

 as well as the color resembles H. Petersii B. & C. , from which, how- 

 ever, in other respects it is very distinct. 



Hysterium cedrinum E. & E. 



On weather-beaten wood of a white cedar post, Rockport, Ks., 

 March, 1894 (Bartholomew, No. 1,422). 



Scattered, erumpent, narrow-elliptical, minute (1-i mm.), black, 

 subrugulose, not polished, lips thin, loosely closed, when fresh open 

 exposing the dark-colored disk. Asci oblong, obtuse above, ab- 

 ruptly contracted below into a short stipe, 46-55x16-3 7,'/, paraphy- 

 sate, 8-spored. Sporidia biseriate, ovate-elliptical, 3-septate, scarcely 



