430 



bark, subcircinate, 7-20 together, ovate-globose, |-| mtn. dialu., con- 

 tracted above into short, slender, convergent necks -n-ith the ostiola 

 smooth and rounded or distinctly quadrisulcate and erumpent in a 

 small, capitate fascicle. In well developed specimens the ostiola are 

 cylindrical, 1-2 mm. long, but quite as often they project only slightly 

 above the epidermis. Thei'e is not a separate circumscribing line 

 around each cluster of the perithecia., but one continuous, black layer 

 extends jalong just under the surface of the inner bark over the entire 

 space occupied liy the fungus. In the early stage of growth, and where 

 there are only a few perithecia in a cluster, the surface of the inner 

 bark is smooth and even, but where the perithecia are more numerous 

 and well developed, they raise the bark into little flat pustules about 

 2 mm. diam. Asci 45 x 7-8 // (p. sp.), with paraphyses. Sporidia bi' 

 seriate, oblong-fusoid, 4-nucleate, slightly constricted in the middle, 

 10-13 X 3-3| /i, ends subobtuse. This was at first refei-red to Diapor- 

 the Woolworthii, Pk., but, having compared it with a specimen of that 

 species from Mr. Peck, we find it to differ in its larger and more nu- 

 merous perithecia with long, cylindrical ostiola, and its broader spoi-i- 

 dia; nor is there any seriate arrangement in the clusters of perithecia, 

 or any circumscribing line. Mr. Commons sends the same from Dela- 

 ware (No. 1266), differing only in the clusters of perithecia being more 

 or less longitudinally confluent. 



On dead oak limbs, London, Canada (Dearness). 



D, magnispora, (E. & E.) 



Valsa magnispora^ E, & K. Jotirn. Mycol. Ill, p. 42. 

 Diaporthe magnispora, Sacc. Syll. IX, p. 707. 



Perithecia buried in the inner bark, not penetrating to the wood, 

 or circumscribed by any black line, 6-10 in a cluster, globose-ovate, 

 about \ mm. diam., contracted above into short necks which burst in 

 a cluster through the epidermis, but project only slightly above it, 

 their apices (ostiola) hemispherical, black, smooth and shining, with a 

 minute, central pore, and sometimes slightly umbilicate. Asci subses- 

 sile, oblong-cylindrical, 100-120 x 18-22 p.. Sporidia biseriate, ob- 

 long-fusoid, hyaline, uniseptate, slightly curved, 25-35 x 7-11 ^. Dia- 

 porthe Aceris, Pckl., has asci only 60x8 // and sporidia 14x4 /i. 



On dead maple limbs, Plainfield, N. J. (G. P. Meschutt). 



D. Aceris, Fckl. Symb. p. 204. 



yalsa mytnda, C. & E. Grev. VI, p. 93. 

 Diaportke myinda, Sacc- Syll. 336&. 

 Ex.sicc, Ell. N. A. F, 180. 



