473 

 V. decorticans, (Fr.) Summa Teg. Scand. p, 412. 



Exsicc. EH. N. A. F. 496 ? 



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

 or finally black, abruptly attenuated above into a disk erunipent 

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

 in a stroma, not deeply buried, monostichous, globose or angular from 

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

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

 or elliptical, erunipent 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 flexuous. Asci narrow-oblong or clavate, sessile, 45-50 x6 //. 

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

 2^/i. Spermogonia Gytispora sp. Spermatia allantoid, 4-5 x 1 /i. 



On bark of Kerria Japonica and Syringa, Carolina (Curtis), 

 sec. Cooke Valsei of the IT. S., No. 35. 



In Europe the species is found on Fagus and Qarpfams. The 

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

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

 ceratophoru, having sporidia about 7 /i long. 



V, rubincola, (Schw.) 



SphcEria rubincola, Schw. Syn. N. Am. 1331. 



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



Growing in the inner bark, at length deciduous, leaving little 

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

 rise the rough ostiola, gregariously confluent At first covered by the 

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

 finally 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. (Schw). 

 Sec. Stevenson, 1. c, sporidia allantoid, hyaline, 9x2 a 



V. rhizina, (Schw.) 



Sphceria rhizina, .Schw. Syn. N. Am. 139b. 



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



Perithecia circinate, closely covered by the inner bark. Ostiola 



terete, subdivergent, 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 any stroma 



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