158 



end so as to be almost biconical, uniseptate, constricted at the septum. 

 On the inside of a hollow oak, South Carolina (Ravenel). 



H. diffiisa, (Schw.) 



Sphcsria diffusa^ Schw. Syn. N. Am. 1502. 



Sphezria rhodomphala. Berk. Hook. Lond. Journ. Bot. IV, p. 312. 

 AmphispkiEria subiculosa, E. & E. Journ. Mycol. II, p. 103, and Sacc. Syll. 7470 

 ByssospkcEria diffusa^ Cke. Syn. '2625. 

 Exsicc. Ell. & Evrht. N. A. F. 2d Ser. 2130. 



Perithecia superficial, gregarious, depressed-globose, \-\ mm. 

 diam., brownish-black, rough, with the ostiolum subradiate sulcate, not 

 prominent, soon pierced with a I'ound opening, and sometimes slightly 

 collapsed above. The lower part of the perithecia is clothed with a 

 coat of brown, branching hairs, which also cover thinly the surface of 

 the matrix around and between the perithecia, some of which touch 

 each other, but are not confluent. Asci clavate-cylindrical, 80-90 x 

 10-12 n (p. sp. 60-65 fi long), with abundant, filiform paraphyses. 

 Sporidia biseriate, oblong or clavate-oblong, slightly curved, unisep- 

 tate and constricted at the septum, 15-20x5-6 ;U, pale brown, ends 

 obtuse, each cell with a large nucleus. 



In a hollow, standing trunk of Juglans cinerea, effused for a 

 whole yard in extent, Bethlehem, Pa. (Schw.), on decorticated poplar, 

 Missouri (Demetrio), Louisiana (Langlois), Ohio (Morgan). 



The Louisiana specc. have the upper part of the perithecia quite 

 red, and in the other specimens the red is more or less discernible in 

 and around the ostiolum. The subiculum finally disappears more or 

 less completely. The length of the asci, as given in the Journ. of 

 Mycol., is too great, and the sporidia too narrow. 



H. barbicincta, (E. & E.) 



Byssospkizrza barbicincta^ E. & E. Journ. Mycol. IV, p. 63. 

 Exsicc. Ell. & Evrht. N. A. F. 2d Ser. 1958. 



Perithecia carbonaceo-membranaceous, gregarious or sometimes 

 scattered, ovate-globose, 150-200 /i high, bare or with a few bristle- 

 like hairs. Ostiolum conic-papilliform, black and shining. Asci sub- 

 cylindrical, 65-70 X 5-6 /i, with a short, stipe-like base and imperfectly 

 developed paraphyses. Sporidia biseriate, fusoid, yellowish-hyaline, 

 2-4-nucleate at first, finally uniseptate, not curved or constricted, 

 10-12x'2-2| 11, ends subobtfise. 



Parasitic on old Diatrype tremellophora aiid on the bark adja- 

 zent, Newfield, N. J. 



