439 



■wood and covered by the bark, which is only slightly raised, about J 

 mm. diam. Ostiola stout, short, obtuse, papilliform at the apex and 

 soon perforated, not joined in a disk but erumpent singly, and only 

 slightly convergent. Asci (sec. Fckl.) 70-80 x 9 /i. Sporidia lanceo- 

 late-oblong, septate in the middle, hyaline, acutely appendiculate at 

 each end, 12x4^. 



On dead limbs of Corylus, Iowa (Holway). ■ 



We have no authentic spec, of D. decedens, but the Iowa specc. 

 agree so well with the description of that species that we have referred 

 them to it. The sporidia were 12-15 x4-4| //, uniseptate and dis- 

 tinctly constricted in the middle, ends obtuse. There were no append- 

 ages visible, but as the specc. were rather old, these may have disap- 

 peared; nor is it unusual in this genus for sporidia at first acute, to 

 l)ecome obtuse at maturity. 



D. marginklis, Pk. 39th Rep. p. 52. 



Pustules numerous, covered by the epidermis which is somewhat 

 elevated. Perithecia valsoid, 8-15 in a pustule, nestling in the inner 

 bark, with no circumscribing line, the ostiola slightly emergent, black, 

 surrounding the margin of the whitish pulverulent, erumpent disk. 

 Asci subcylindrical, 65-75 x 10-12 fi. Sporidia crowded or biseriate, 

 uniseptate, obscurely apiculate at each end, 20-23 x 5-7 n- 



On dead branches of Alnus viridis, New York. 



Externally like Vaha amhiens. In the larger pustules the osti- 

 ola form a marginal circle around the disk, but in the smaller ones they 

 sometimes emerge centrally and obliterate the disk. 



D. epiraicta, E. & E. (in Herb.) 



Exsicc. Ell. N. A. F. 495.— Rab. F. E. 3154- 



Stromata scattered, cortical, orbicular, about 3 mm. diam., convex, 

 brownish-black outside, subcinereous within, with a faint, circumscrib- 

 ing line, which does not penetrate the wood. Perithecia 6-10 in a 

 stroma, subglobose, about ^ mm. diam., subcircinate, necks short, end- 

 ing in the black, roughish, hemispherical ostiola erumpent in a black 

 disk surrounded by the ruptured epidermis. Asci (p. sp.) about 50 x 

 8 u, clavate-cylindrical. Sporidia biseriate, fusoid, hyaline, 3-4-nucle- 

 ate, becoming uniseptate, 12x8//, with a bristle-like appendage at 

 each end about half as long as the sporidium. 



On dead stems of Ilex verticillata, Newfield, N. J., also sent from 

 Plainfield, N. J., by Mr. G. F. Meschutt. 



Issued in N. A. F. as Diatrype Badhanii, Curr., from which 

 (sec. authentic specc.) it is quite distinct. 



