575 



hemispherical, deeply 4-5-sulcate-cleft. Asci (p. sp.) 40-45 x 7-8 /*, 

 with stout paraphyses and allantoid, yellowish, moderately curved, 8- 

 12 x 2J // sporidia. Specific name from Hochelaga, an Indian name 

 for the St. Lawrence River. 



On decorticated elm wood, London, Canada (Dearness). 



D. tremellophora, Ell. in Am. Nat, March, 1882, p. 239. 



Diatvype disciformis, B. & C. 



Diatrype disciformis, var. Magnolice, Thum. in Bull. Torr. Bot. Club, VI, p. 95. 

 Exsicc. Rav. F. Am. 360. Thum. M. U. 359. Ell. N. A. F. 775. 



Stroma as in D. disciformis, only mostly smaller and closely 

 embraced by the Jacinise of the ruptured epidermis, at first concave 

 and covered by a thin, circular, tremelloid, reddish orange-colored 

 membrane which soon turns black and falls off, revealing the disk of 

 the stroma beneath it minutely white-punctate from the incipient 

 ostiola. The stroma finally becomes more erunipent, flattish-convex. 

 brown, and subrimose, and the punctiforni ostiola darker but not 

 prominent. Asci and sporidia as in D. disciformis. 



On dead trunks of Magnolia glauca, New Jersey and Carolina. 



D. minima, E. & E. Journ. Mycol. I, p. 91. 



Stroma cortical, formed of the scarcely altered substance of the 

 bark, elliptical, 1-2 mm. diam., limited by a black, circumscribing line 

 which penetrates the wood beneath. Perithecia 8-12 in a stroma, 

 lying in a single layer, globose, 150-200 // diam., ineinbranaceous, 

 with black, rather thick walls and short, obtuse ostiola, their apices 

 papilliform, black and shining at first, then distinctly perforated with 

 a rather broad opening. Asci cylindrical, 70-80 x 2|-3 ,. Par- 

 aphyses obscure (or none?). Sporidia uniseriate, lying end to end, 

 oblong-elliptical, 2-nucleate, yellowish, nearly hyaline, 5-7 x 2 fj>. The 

 black, scarcely projecting ostiola which dot the small, tuberculiform 

 stroma, are visible through short, longitudinal cracks or chinks in the 

 -lightly elevated epidermis. 



On dead shoots and limbs of Magnolia glauca, Newfield, N. J. 

 Probably not uncommon, but easilv overlooked. 



* 



D. sphserospora, E. & E. Journ. Mycol. Ill, p. 42. 



Stroma formed of the scarcely altered substance of the bark, 

 ernmpent, but not very prominent, surrounded by the ruptured epi- 

 dermis, small (J-l mm.). Perithecia in a single layer, 3-12, black, 

 membranaceous, minute (166-200 ti], their smooth, black, obtusely 



