531 



or less protuberant, pustuliforrn closely covered by the adherent epi- 

 dermis, disk reddish or brick-colored, dotted with the black ostiola. 

 Perithecia 4-10, circinate in the unchanged inner bark, minute, 

 attenuated into a slender neck. Ostiola minute, cylindrical, not thick- 

 ened, obtuse, scarcely exserted around the margin of the scanty disk. 

 Asci narrow-oblong or subcylindrical, sessile, 8-spored, 108-160x16- 

 18 fj.. Sporidia obliquely uniseriate or subbiseriate, elliptic-ovate, 

 straight or rarely subinequilateral, continuous, subhyaline, 24-30 x 

 8-12 ^(20x8^, Peck). 



On dead branches of Carpinus, New York State (Peck), and 

 Canada (Dearness). 



Cr. umbilicata, (Pers.) 



Sphceria umbilicata, Pers. Syn. p. 45. 

 Valsa umbilicata, Stevenson, 1. c. 



" Circinate, small. Ostiola crowded, somewhat cup-shaped, rough. 

 Among the smallest of the genus. Ostiola prominent, rough to the 

 touch, excavated at the apex or deeply umbilicate." 



On Lonicera sempervirens, Carolina (Schw.). 

 Sporidia (sec. Stevenson) oval, 6J x 5 p. 



Cr. an 6 mala, (Pk.) 



Diatrype anomala, Pk. 28th Rep. p. 72. 

 Cryptosporella anomala, Sacc. Syll. 1813. 

 Exsicc. Ell. N. A. F. 1185. 



Pustules prominent, subrotund or elliptical, 2-5 mm. diarn., erum- 

 pent, penetrating the wood, generally with a thin, black crust beneath 

 and around them, the disk convex or slightly depressed, rough, cine- 

 reous-brown or black, sometimes whitish-pulverulent. Perithecia 

 crowded, deeply imbedded in the stroma, often elongated. Ostiola 

 scattered or crowded, convex, often radiate-sulcate, black. Asci short, 

 broad, fugacious. Sporidia crowded, elliptical, simple, often with a 

 nucleus at each end, hyaline, 7-8 JJL long. 



On living stems of Corylus Americana, Albany, N. Y. (Peck), 

 Iowa (Holway), on Corylus Avellana, Newfield, N. J. 



The pustules appear first on the smaller branches, and are seri- 

 ately arranged along one side of the branch ; afterwards they appear 

 also on the larger branches and on the trunk itself, and in the course 

 of two or three years, the part of the tree above ground is entirely 

 killed. The roots, however, still retain their vitality and continue to 

 send up each year a luxuriant growth of new shoots destined to be 



