473 

 V. (lecorticans, (Fr.) S\unma "Wg. Scand. p. 412. 



Exsicc. Ell. N. A. F. 496? 



Stroma orbicular or oval, depressed-conical, rather large, brown 

 v>r finally black, abruptly attenuated above into a disk eruinpent 

 through the epidermis, which is usually thrown off. Perithecia 6-20 

 in a stroma, not deeply buried, monosti-chous, globose or angular from 

 pressure, attenuated into a moderately lone neck. Ostiola more or 



i 



less exscrted, slender, cylindrical, black, shining, forming an orbicular 

 or elliptical, erumpent disk, mostly densely crowded, with the apex 

 rounded or truncate, pierced with a distinct pore, either attenuated - 

 conical, or very rarely elongated-cylindrical, and considerably exserted 

 and flexuou-. -Asci narrow-oblong or clavate, sessile, 45-50x6 //. 

 Sporidia conglobate, cylindrical, curved or straight, hyaline, 10-12 x 

 -i //.. Sperinogonia C//f /*;">// sp. Spermatia allantoid, 4-5x1 a, 



On l>ark of Kerrtu ./<//:<'/*/<</ and Syi'inyd. Carolina (Curti- 

 -ec. Cooke Valsei of the U. S.. No. -S">. 



In Europe the specie- H 11 mini on Fdyu* and Carpinus. The 

 X. A. F. specc. are on maple, and do not agree well with the above 

 diagnosis taken from Sacc. Sylioge. They are probably referable to V. 

 ceratophora, having sporidia al>out 7 // long. 



V. riihincola, (Schw.) 



Spharia rubincola, Schw. Syn. N. Am. i^i- 



Valsa rubincola, Schw. in Stevenson's Add. to Cke. Valsei of the I*. S. 'No. 105. 



Growing in the iiino' bark, at. length deciduous, leaving little 

 cavities or pits, (Stroma) orbicular, depressed in the center, where 

 rise the rough ostiohi. gregariously confluent. At first covered by the 

 epidermis, and buried so deeply that only the ostiola project, but 

 dually emergent and free. Perithecia rather large, few, depressed- 

 globose, surrounded by a white-pulverulent stroma. The conceptacle 

 is sometimes crowned with a single ostiolum. cylindrical, with a broad 

 opening sometimes with several divergent ostiola. 



Common on stems of Rubus in gardens, Bethlehem. Pa. (Schv. 

 Sec. Stevenson, I.e., sporidia allantoid. hyaline, 9x2 a. 



V. rhizina, (Schw.) 



Sph(zria r/tisii/a, Schw. Syn. N. Am. 1398. 



Valsa rhizina, Stevenson Add. to Cooke's Valsei of the I'. S. No. 122. 



Perithecia circinate, closely covered by the inner bark. Ostiola 



terete, sul (divergent, with a large orifice, at first sometimes papillate, 



Perithecia densely circinate. much depressed, numerous, olive-black, 



white inside, minute, nestling in pits in the bark without miy <tmnia. 



60 



