810 SPH^RIACEI. 



Sect. 1. Diatrypella — Asci many spored. 



2429. Diatrype quercina. Tul. " Oak Diatr}T)e." 



Perithecia 8-15 in a group, black; ostiola ovate, quadrisul- 

 cate ; asci linear-clavate ; sporidia numerous, yellowish in a 

 mass, sausage-shaped, and colourless when free. — Tul. Carp. ii. 

 p. 98, t. xii./. 1-15 {not B. ^' Br. nor Currey). Rahh. exs. no. 319 

 and 63b. Diatryjiella quercina, Cooke exs. no. 24:2. Sferiacei Ital. 

 p. 28. Sphceria cpiercina, Pers. Syn.p. 24, t. l,f. 7 h. Desm. exs. no. 

 1725. Stromatosphceria quercina, Grev. Fl. Ed. p. S68. Micros- 

 toma enteroleucum, Fckl.exs.no. 1037. Diatrypella Rouselii, De 

 Not. Sfer. Ital. t. 32. {Fig. 385.) 



On oak branches. Common. [Mid. Carolina.] 



2430. Diatrype aspera. Fr. '* Rough Diatrj^pe." 



Orbicular or angular, convex, black ; perithecia attenuated 

 into a slender neck, covered with a dirty-white stroma ; ostiola 

 conico-cylindrical ; asci clavate ; sporidia numerous, curved, 

 rounded at the ends, without nuclei. — Hofm. Icon. iii. 1. 18,/. 3. 

 Fckl. exs.no. 2057. Fr. S. V.S.p. 385. S. aspera, Fr. S.M. ii. p. 

 354. Eng. Fl. v. p. 242. Diatrypella aspera, Fckl. Sym. Myc. p. 

 232. 



On branches of oak. 



Very rQuch resembling 7). verrv.ccpformis, but the stroma is dirty-wliite, the 

 ostiola more prominent, and the neck, instead of being short, attenuated. 



2431. Diatrype favacea. Fr. " Birch Diatrype." 



Irregular, black ; perithecia oblong-ovate, with a short neck 

 covered with the thin dirty-white stroma ; ostiola rather promi- 

 nent, convexo-subrotund ; asci clavate ; sporidia numerous, 

 curved, rounded at the ends without nuclei. — Fr. S. V.S.p. 385. 

 Fckl. exs. no. 1040. S. favacea, Fr. Ohs. ii. t. 8, /. 5. S.M. ii.p. 

 354. Eng.Fl. \.p. 242. Fries, exs. no. 306. Berk. Mag. Zool ^ 

 Bot. no. 17. Diatrypella favacea, De Not. Schema, 28. 



On birch, yet covered with the bark. [Mid. Carolina.] 



Sometimes orbicular, sometimes irregular from several individuals being 

 confluent, prominent, 2-4 lines or more broad, at first pale wood-colour. 

 Peritljccia disposed indistinctly in two layers, their bases subconnate, apices 

 distinct covered with a thin stroma, which in the old state is obliterated ; 

 base circumscribed by a fine black line. — Fries. 



