475 



Perithecia circulating around a central one. included in a cine- 

 reous-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 8-spored. Sporidia allantoid, 10 p. long. 



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



Species imperfectly known. 

 V. leiphaeinioides, B. & C. Grev. IV, p. 101. 



Exsicc. Rav. F. Am. 192. 



" Pustules, when the cuticle is stripped off, covered with the brown 

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

 sausage-shaped, 10 IJL long*." 



On oak, New England and Carolina. Closely resembling D-i<t- 

 porthe leiphc&mia, (Fr.), but with different fruit. 



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

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

 a Calosphceria, apparently a compact form of C. lasiostoma, E. & E., 

 which is probably the same as C. scabriseta Schw. This same Calo- 

 spficeria is found on the spec, in Rav. F. Am. 192. 



V. Nyss*, Cke. Grev. VI. 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, 

 8 fj. 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 Sphceria radicum, Schw., and Sphmria oligos- 

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

 barren, Valsas. 



\. centripeta, (Fr.) 



* 



Sphfsria centripeta, Fr. S, M. II, p. 402. 



Valsa centripeta, Fr, m Peck's 26th Rep. p. 86. 



Pustulate, orbicular or elliptical, disk transversely erumpent, but 

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

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

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

 the erumpent, flat disk. 



