475 



Perithecia circinating- around a central one, iiicliided in a cine- 

 I'eous-black stroma, necks short, ostiola, densely crowded and erumpent 

 in a convex disk. On bare wood it varies, becoming effused, with the 

 ostiola distinct. Asci S-spored. Sporidia allantoic!, 10 /i long. 



On Prunus, New England and Pennsylvania (Schw.). 



Siieciea imperfectly known. 

 V. leiphaemioides, B. & 0. Grev. lY, p. 101. 



Exsicc. Rav. F. Ani. 192. 



" Pustules, when the cuticle is stripped oft', fco%'ered with the brown 

 bark, the ostiola only exposed and mixed with white matter. Sporidia 

 sausage-shaped, 10 // long." 



On oak, New England and Carolina. Closely i-esembling Dia- 

 porthe leiphcBmia, (Fr.), but with different fruit. 



The specimens in our copies of Rav. F. Am. are entirely without 

 fruit. The specc. issued in Ell. & Evrht. N. A. F. 2d Ser. 2344, are 

 a Calosph'oiria, apparently a compact form of C. lasiostoma, E. & E., 

 M'hich is probably the same as C. scabriseta Schw. This same Calo- 

 sj)h(B7'ia is found on the spec, in Rav. F. Am, 192. 



, V. Nyssse, Cke. Grev. \l, p. 145. 



Kxsicc. Rav, F. Am. 194. 



As nothing satisfactory can be made out of the spec, in Rav. F. 

 Am., we can only quote the brief description in Grevillea. 



" Pustules covered by the bark. Perithecia ovate, attenuated into 

 a long neck, black. Asci clavate. Sporidia linear, curved, hyaline, 

 ?s [M long. Often the center of the pustule is occupied by a large sper- 

 mogonium around which the perithecia are clustered." 



On Nyssa, Aiken, So. Carolina. 



The specimens of SfJimria radicum, Schw., and Spihai7-ia oligos- 

 toma, Schw., in Herb. Schw., are without fruit, and are apparently 

 barren, Valsas. 



V. centripeta, (Pr.) 



Spharia centripeta^ Fr. S. M. II, p. 402. 

 Vaha centripeta, Fr. in Peck's 26th Rep. p. S6. 



Pustulate,- orbicular or elliptical, disk transversely erumpent, but 

 variable. Perithecia rather large, globose-depressed, covered, the 

 very small, crowded, exserted, semigloljose ostiola mostly arranged in 

 two parallel lines, forming an elongated, black spot in the tenter of 

 the erumpent, flat disk. 



