473 

 \. decorticaiis, (Pr.) Summa Veg. Scand. p. .412. 



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



Stvoiua orbicular or oval, depressed-conical, leather large, brown 

 or finall}- black, abruptly attenuated above into a disk erumpent 

 through the epidermis, which is usually thrown off. Pcrithecia 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, 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 flexuous. Asci narrow-oblong or clavate, sessile, 45-50 x 6 //. 

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

 •2| fi. Spermogonia Gytispora sp. Spermatia allantoid, 4r-5 x 1 //. 



On bark of Kerna Juponica and Syrin-gcL, Carolina (Curtis), 

 sec. Cooke Valsei of the U. 8., No. 35. 



In Europe the species is found on Fagus and Ccirpi7iiis. The 

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

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

 ceratophora, having sporidia about 7 /j. long. 



V. rubincola, (Schw.) 



Sph^ria 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 

 ca\'ities 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- 

 o-lobose 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 Ruhus in gardens, Bethlehem, Pa. (Schw). 

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



V. rhizina, (Schw.) 



Sphtsria rhizina, Schw. Syn. N. Am. :39s. 



Kafaa »'A22!'«o, Stevenson Add. to Cooke's Valsei of the U S No. i42. 



Perithecia circinate, closely covered liy 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 stmnia. 



60 



