640 



H. pallidum, E. & E. Journ. Mycol. IV, p. 68. 



Perithecia globose, about 1 mm, diam., suberose-coriaceous, con- 

 nate in tuberculiform clusters 2-5 mm. diam., of a coffee-brown color, 

 smooth, but uneven from the slightly projecting, flattened apices of the 

 perithecia, which have a small, black, papillose ostiolum surrounded 

 by a light-colored ring. Stroma scarcely any except as formed by 

 the connate walls of the perithecia. Asci cylindrical, 150 x 6 //, in- 

 cluding the substipitate base, with abundant paraphyses. Sporidia 

 uniseriate, navicular, opake, about 12x6 //. 



On bark of dead oak limbs, Catahoula, La. (Langlois, No. 1273). 



H. marginatum, (Schw.) 



Sphczria marginata, Schw. Syn. N. Am. No. 1176. 

 Sphczria durissima, Schw. Syn. Car. No. 46. 

 Hypoxylon durissimum, Cke. Grev. XI, p. 131. 



Sphczria truncala, Schw. Syn. Car. 174 (fide Cke. Grev. XV, p. 80). 

 Hypoxylon marginatum, Berk. Grev. IV, p. 49. 

 Exsicc. EH. N. A. F. 471 (sub nomine H. annulati) .EH. & Evrht. N. A. F. 2d Ser. 

 2352. Rav. Fungi Car. I, No. 47. Rav. F. Am. 182. 



Stroma pulvinate, 1-3 cm. across, or by confluence more than 

 that, convex-hemispherical, covered at first with the olivaceous conidial 

 layer, finally black, surface slightly roughened by the projecting peri- 

 thecia with their black, papilliform ostiola, which arise from the center 

 of a small, flat, circular depression or disk which, however, does not 

 appear in the earlier stage of growth. Perithecia monostichous, peri- 

 pherical, about 2 mm. diam., ovate. Asci cylindrical, 75-80 x 6-7 //. 

 Sporidia uniseriate, navicular, brown, 7-9 x 3-3 J p. (mostly 7-8 jj. long). 

 This has been issued in Ravenel's Fungi Car. Ex. Fasc. I, No. 47, and 

 in Ellis' N. A. F. No. 362, as Hypoxylon annulatum, Schw., but it 

 agrees with specimens of Sphceria marginata, Schw., in Herb. Schw., 

 at Philadelphia, and also with the description of that species in Syn. 

 N. Am. The S. marginata, in Fries 7 Elenchus, II, p. 69, is evidently 

 a different thing probably, as Saccardo, in Syll. I, No. 371, suggests, 

 Nummularia discreta, Schw. 



On dead limbs and trunks, from Maine to Florida and west to 

 Ohio. 



- H. annulatum, (Schw.) 



Sphceria annulata, Schw. in Fr. Elench. II, p. 64, and in Schw. New Am. Sph, 



p. 11, tab. 2, fig. 8. 

 Hypoxylon annulatum, Mont. Syll. Crypt, p. 213. 

 Exsicc. EU. N. A. F. 472. EH. & Evrht. N. A. F. 2d Ser, 2353. Rav. F. Am. 183. 



Stroma hemispheric-tuberculiform (about J cm. across) or irregu- 

 larly effused and interruptedly confluent-tuberculose, purplish-black. 



