650 



H. jecoriiiiini, B. & Rav. Grev. IV, p. 50. 



Effused, an inch or more long and broad, at first covered with a 

 tawny yellow powder, then liver-colored, clotted with the dark ostiola. 

 Sporidia (sec. Cooke 1. c.) 9x4//. The specimens in Rav. Fungi Car. 

 IV, 37, have the stroma subelliptical, 1-2x1 cm. and sporidia 7-8 x 

 3-4 [j>. Florida specimens, collected by Col. Calkins during the 

 winter of 1887, have the stroma lg-3x 2-2J cm. 



Ravenel's specimens are on bark of Acer rubrum, and the Florida 

 specimens are also on bark of some deciduous tree. 



The perithecia form a single layer on the surface of the black 

 carbonaceous, 1 mm. thick stroma, and are oval in shape and closely 

 packed, about \ mm. high, with their apices slightly projecting, thus 

 making the surface of the stroma finely papillose. 



H. ianthinum, Cke. Grev. XI, p. 132. 



Stroma ta thin, elliptical, subconfluent, 1-2 x \~\ mm., grayish or 

 cinereous, flat, surface papillose from the slightly projecting apices of 

 the crowded perithecia, which lie in a single layer and are very small, 

 less than \ mm. high, penetrating to the wood and only slightly cov- 

 ered by the scanty stroma. Ostiola minute, papilliform. Asci cylin- 

 drical. Sporidia elliptical, obtuse, brown, 12-16x4-5 fi. 



On decaying wood, Canada (Macoun), Louisiana (Langlois), Caro- 

 lina (Ravenel), New York (0. F. Cook). 



The Canada and Louisiana specimens have been submitted to 

 Br. Cooke for examination, and he pronounces them to be H. ianthi- 

 num, Cke., of which the original was collected in Potsdam, N. Y., 

 many years ago. The name is badly chosen and misleading, for the 

 surface of the stroma in all the specimens (unless it be the Potsdam 

 specimen, which is now lost or mislaid) is of a glaucous or grayish- 

 white, about the same as in H. atropunctatum, (Schw.), or H. pruina- 

 turn, (KL), without any purplish shade whatever. The description 

 above quoted applies in other respects tolerably well. 



H. atropun datum, (Schw.) 



Sphceria atropunctata, Schw. Syn. Car. No. 44. 

 Anthostoma atropunctatum, Sacc. Syll. 1102. 

 Hypoxylon atropunctatum, Cke. Syn. 977. 

 Exsicc. Ell. N. A. F. 576. Rab. F. H. 3159. 



Broadly effused, smooth, white, clotted with the smooth, convex, 

 black ostiola, and surrounded with a black, sterile margin, substance 

 very hard and rigid, black inside. Perithecia in a single layer, not 

 crowded, ovate, about \ mm. high. Asci cylindrical, abruptly con- 

 tracted below into a short stipitate base, about 150x 10-12 p. Spo- 



